Base import of Tycho code (warning: huge commit)

16 files changed, 3956 insertions, 0 deletions

diff --git a/dom/resourcestats/ResourceStatsDB.jsm b/dom/resourcestats/ResourceStatsDB.jsm
new file mode 100644
index 000000000..a4ee943ca
--- /dev/null
+++ b/dom/resourcestats/ResourceStatsDB.jsm
@@ -0,0 +1,538 @@
+/* This Source Code Form is subject to the terms of the Mozilla public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+"use strict";
+
+this.EXPORTED_SYMBOLS = ['ResourceStatsDB'];
+
+const DEBUG = false;
+function debug(s) { dump("-*- ResourceStatsDB: " + s + "\n"); }
+
+const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
+
+Cu.import("resource://gre/modules/IndexedDBHelper.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.importGlobalProperties(["indexedDB"]);
+
+XPCOMUtils.defineLazyServiceGetter(this, "appsService",
+                                   "@mozilla.org/AppsService;1",
+                                   "nsIAppsService");
+
+const DB_NAME = "resource_stats";
+const DB_VERSION = 1;
+const POWER_STATS_STORE = "power_stats_store";
+const NETWORK_STATS_STORE = "network_stats_store";
+const ALARM_STORE = "alarm_store";
+
+const statsStoreNames = {
+  power: POWER_STATS_STORE,
+  network: NETWORK_STATS_STORE
+};
+
+// Constant defining the sampling rate.
+const SAMPLE_RATE = 24 * 60 * 60 * 1000; // 1 day.
+
+// Constant defining the MAX age of stored stats.
+const MAX_STORAGE_AGE = 180 * SAMPLE_RATE; // 180 days.
+
+this.ResourceStatsDB = function ResourceStatsDB() {
+  if (DEBUG) {
+    debug("Constructor()");
+  }
+
+  this.initDBHelper(DB_NAME, DB_VERSION,
+                    [POWER_STATS_STORE, NETWORK_STATS_STORE, ALARM_STORE]);
+};
+
+ResourceStatsDB.prototype = {
+  __proto__: IndexedDBHelper.prototype,
+
+  _dbNewTxn: function(aStoreName, aTxnType, aCallback, aTxnCb) {
+    function successCb(aResult) {
+      aTxnCb(null, aResult);
+    }
+    function errorCb(aError) {
+      aTxnCb(aError, null);
+    }
+    return this.newTxn(aTxnType, aStoreName, aCallback, successCb, errorCb);
+  },
+
+  upgradeSchema: function(aTransaction, aDb, aOldVersion, aNewVersion) {
+    if (DEBUG) {
+      debug("Upgrade DB from ver." + aOldVersion + " to ver." + aNewVersion);
+    }
+
+    let objectStore;
+
+    // Create PowerStatsStore.
+    objectStore = aDb.createObjectStore(POWER_STATS_STORE, {
+      keyPath: ["appId", "serviceType", "component", "timestamp"]
+    });
+    objectStore.createIndex("component", "component", { unique: false });
+
+    // Create NetworkStatsStore.
+    objectStore = aDb.createObjectStore(NETWORK_STATS_STORE, {
+      keyPath: ["appId", "serviceType", "component", "timestamp"]
+    });
+    objectStore.createIndex("component", "component", { unique: false });
+
+    // Create AlarmStore.
+    objectStore = aDb.createObjectStore(ALARM_STORE, {
+      keyPath: "alarmId",
+      autoIncrement: true
+    });
+    objectStore.createIndex("type", "type", { unique: false });
+    // Index for resource control target.
+    objectStore.createIndex("controlTarget",
+                            ["type", "manifestURL", "serviceType", "component"],
+                            { unique: false });
+  },
+
+  // Convert to UTC according to the current timezone and the filter timestamp
+  // to get SAMPLE_RATE precission.
+  _normalizeTime: function(aTime, aOffset) {
+    let time = Math.floor((aTime - aOffset) / SAMPLE_RATE) * SAMPLE_RATE;
+
+    return time;
+  },
+
+  /**
+   * aRecordArray contains an array of json objects storing network stats.
+   * The structure of the json object =
+   *  {
+   *    appId: XX,
+   *    serviceType: "XX",
+   *    componentStats: {
+   *      "component_1": { receivedBytes: XX, sentBytes: XX },
+   *      "component_2": { receivedBytes: XX, sentBytes: XX },
+   *      ...
+   *    },
+   *  }
+   */
+  saveNetworkStats: function(aRecordArray, aTimestamp, aResultCb) {
+    if (DEBUG) {
+      debug("saveNetworkStats()");
+    }
+
+    let offset = (new Date()).getTimezoneOffset() * 60 * 1000;
+    let timestamp = this._normalizeTime(aTimestamp, offset);
+
+    this._dbNewTxn(NETWORK_STATS_STORE, "readwrite", function(aTxn, aStore) {
+      aRecordArray.forEach(function(aRecord) {
+        let stats = {
+          appId: aRecord.appId,
+          serviceType: aRecord.serviceType,
+          component: "",
+          timestamp: timestamp,
+          receivedBytes: 0,
+          sentBytes: 0
+        };
+
+        let totalReceivedBytes = 0;
+        let totalSentBytes = 0;
+
+        // Save stats of each component.
+        let data = aRecord.componentStats;
+        for (let component in data) {
+          // Save stats to database.
+          stats.component = component;
+          stats.receivedBytes = data[component].receivedBytes;
+          stats.sentBytes = data[component].sentBytes;
+          aStore.put(stats);
+          if (DEBUG) {
+            debug("Save network stats: " + JSON.stringify(stats));
+          }
+
+          // Accumulated to tatal stats.
+          totalReceivedBytes += stats.receivedBytes;
+          totalSentBytes += stats.sentBytes;
+        }
+
+        // Save total stats.
+        stats.component = "";
+        stats.receivedBytes = totalReceivedBytes;
+        stats.sentBytes = totalSentBytes;
+        aStore.put(stats);
+        if (DEBUG) {
+          debug("Save network stats: " + JSON.stringify(stats));
+        }
+      });
+    }, aResultCb);
+  },
+
+  /**
+   * aRecordArray contains an array of json objects storing power stats.
+   * The structure of the json object =
+   *  {
+   *    appId: XX,
+   *    serviceType: "XX",
+   *    componentStats: {
+   *      "component_1": XX, // consumedPower
+   *      "component_2": XX,
+   *      ...
+   *    },
+   *  }
+   */
+  savePowerStats: function(aRecordArray, aTimestamp, aResultCb) {
+    if (DEBUG) {
+      debug("savePowerStats()");
+    }
+    let offset = (new Date()).getTimezoneOffset() * 60 * 1000;
+    let timestamp = this._normalizeTime(aTimestamp, offset);
+
+    this._dbNewTxn(POWER_STATS_STORE, "readwrite", function(aTxn, aStore) {
+      aRecordArray.forEach(function(aRecord) {
+        let stats = {
+          appId: aRecord.appId,
+          serviceType: aRecord.serviceType,
+          component: "",
+          timestamp: timestamp,
+          consumedPower: aRecord.totalStats
+        };
+
+        let totalConsumedPower = 0;
+
+        // Save stats of each component to database.
+        let data = aRecord.componentStats;
+        for (let component in data) {
+          // Save stats to database.
+          stats.component = component;
+          stats.consumedPower = data[component];
+          aStore.put(stats);
+          if (DEBUG) {
+            debug("Save power stats: " + JSON.stringify(stats));
+          }
+          // Accumulated to total stats.
+          totalConsumedPower += stats.consumedPower;
+        }
+
+        // Save total stats.
+        stats.component = "";
+        stats.consumedPower = totalConsumedPower;
+        aStore.put(stats);
+        if (DEBUG) {
+          debug("Save power stats: " + JSON.stringify(stats));
+        }
+      });
+    }, aResultCb);
+  },
+
+  // Get stats from a store.
+  getStats: function(aType, aManifestURL, aServiceType, aComponent,
+                     aStart, aEnd, aResultCb) {
+    if (DEBUG) {
+      debug(aType + "Mgr.getStats()");
+    }
+
+    let offset = (new Date()).getTimezoneOffset() * 60 * 1000;
+
+    // Get appId and check whether manifestURL is a valid app.
+    let appId = 0;
+    if (aManifestURL) {
+      appId = appsService.getAppLocalIdByManifestURL(aManifestURL);
+
+      if (!appId) {
+        aResultCb("Invalid manifestURL", null);
+        return;
+      }
+    }
+
+    // Get store name.
+    let storeName = statsStoreNames[aType];
+
+    // Normalize start time and end time to SAMPLE_RATE precission.
+    let start = this._normalizeTime(aStart, offset);
+    let end = this._normalizeTime(aEnd, offset);
+    if (DEBUG) {
+      debug("Query time range: " + start + " to " + end);
+      debug("[appId, serviceType, component] = [" + appId + ", " + aServiceType
+            + ", " + aComponent + "]");
+    }
+
+    // Create filters.
+    let lowerFilter = [appId, aServiceType, aComponent, start];
+    let upperFilter = [appId, aServiceType, aComponent, end];
+
+    // Execute DB query.
+    this._dbNewTxn(storeName, "readonly", function(aTxn, aStore) {
+      let range = IDBKeyRange.bound(lowerFilter, upperFilter, false, false);
+
+      let statsData = [];
+
+      if (!aTxn.result) {
+        aTxn.result = Object.create(null);
+      }
+      aTxn.result.type = aType;
+      aTxn.result.component = aComponent;
+      aTxn.result.serviceType = aServiceType;
+      aTxn.result.manifestURL = aManifestURL;
+      aTxn.result.start = start + offset;
+      aTxn.result.end = end + offset;
+      // Since ResourceStats() would require SAMPLE_RATE when filling the empty
+      // entries of statsData array, we append SAMPLE_RATE to the result field
+      // to save an IPC call.
+      aTxn.result.sampleRate = SAMPLE_RATE;
+
+      let request = aStore.openCursor(range, "prev");
+      if (aType == "power") {
+        request.onsuccess = function(aEvent) {
+          var cursor = aEvent.target.result;
+          if (cursor) {
+            if (DEBUG) {
+              debug("Get " + JSON.stringify(cursor.value));
+            }
+
+            // Covert timestamp to current timezone.
+            statsData.push({
+              timestamp: cursor.value.timestamp + offset,
+              consumedPower: cursor.value.consumedPower
+            });
+            cursor.continue();
+            return;
+          }
+          aTxn.result.statsData = statsData;
+        };
+      } else if (aType == "network") {
+        request.onsuccess = function(aEvent) {
+          var cursor = aEvent.target.result;
+          if (cursor) {
+            if (DEBUG) {
+              debug("Get " + JSON.stringify(cursor.value));
+            }
+
+            // Covert timestamp to current timezone.
+            statsData.push({
+              timestamp: cursor.value.timestamp + offset,
+              receivedBytes: cursor.value.receivedBytes,
+              sentBytes: cursor.value.sentBytes
+            });
+            cursor.continue();
+            return;
+          }
+          aTxn.result.statsData = statsData;
+        };
+      }
+    }, aResultCb);
+  },
+
+  // Delete the stats of a specific app/service (within a specified time range).
+  clearStats: function(aType, aAppId, aServiceType, aComponent,
+                       aStart, aEnd, aResultCb) {
+    if (DEBUG) {
+      debug(aType + "Mgr.clearStats()");
+    }
+
+    let offset = (new Date()).getTimezoneOffset() * 60 * 1000;
+
+    // Get store name.
+    let storeName = statsStoreNames[aType];
+
+    // Normalize start and end time to SAMPLE_RATE precission.
+    let start = this._normalizeTime(aStart, offset);
+    let end = this._normalizeTime(aEnd, offset);
+    if (DEBUG) {
+      debug("Query time range: " + start + " to " + end);
+      debug("[appId, serviceType, component] = [" + aAppId + ", " + aServiceType
+            + ", " + aComponent + "]");
+    }
+
+    // Create filters.
+    let lowerFilter = [aAppId, aServiceType, aComponent, start];
+    let upperFilter = [aAppId, aServiceType, aComponent, end];
+
+    // Execute clear operation.
+    this._dbNewTxn(storeName, "readwrite", function(aTxn, aStore) {
+      let range = IDBKeyRange.bound(lowerFilter, upperFilter, false, false);
+      let request = aStore.openCursor(range).onsuccess = function(aEvent) {
+        let cursor = aEvent.target.result;
+        if (cursor) {
+          if (DEBUG) {
+            debug("Delete " + JSON.stringify(cursor.value) + " from database");
+          }
+          cursor.delete();
+          cursor.continue();
+          return;
+        }
+      };
+    }, aResultCb);
+  },
+
+  // Delete all stats saved in a store.
+  clearAllStats: function(aType, aResultCb) {
+    if (DEBUG) {
+      debug(aType + "Mgr.clearAllStats()");
+    }
+
+    let storeName = statsStoreNames[aType];
+
+    // Execute clear operation.
+    this._dbNewTxn(storeName, "readwrite", function(aTxn, aStore) {
+      if (DEBUG) {
+        debug("Clear " + aType + " stats from datastore");
+      }
+      aStore.clear();
+    }, aResultCb);
+  },
+
+  addAlarm: function(aAlarm, aResultCb) {
+    if (DEBUG) {
+      debug(aAlarm.type + "Mgr.addAlarm()");
+      debug("alarm = " + JSON.stringify(aAlarm));
+    }
+
+    this._dbNewTxn(ALARM_STORE, "readwrite", function(aTxn, aStore) {
+      aStore.put(aAlarm).onsuccess = function setResult(aEvent) {
+        // Get alarmId.
+        aTxn.result = aEvent.target.result;
+        if (DEBUG) {
+          debug("New alarm ID: " + aTxn.result);
+        }
+      };
+    }, aResultCb);
+  },
+
+  // Convert DB record to alarm object.
+  _recordToAlarm: function(aRecord) {
+    let alarm = {
+      alarmId: aRecord.alarmId,
+      type: aRecord.type,
+      component: aRecord.component,
+      serviceType: aRecord.serviceType,
+      manifestURL: aRecord.manifestURL,
+      threshold: aRecord.threshold,
+      data: aRecord.data
+    };
+
+    return alarm;
+  },
+
+  getAlarms: function(aType, aOptions, aResultCb) {
+    if (DEBUG) {
+      debug(aType + "Mgr.getAlarms()");
+      debug("[appId, serviceType, component] = [" + aOptions.appId + ", "
+            + aOptions.serviceType + ", " + aOptions.component + "]");
+    }
+
+    // Execute clear operation.
+    this._dbNewTxn(ALARM_STORE, "readwrite", function(aTxn, aStore) {
+      if (!aTxn.result) {
+        aTxn.result = [];
+      }
+
+      let indexName = null;
+      let range = null;
+
+      if (aOptions) { // Get alarms associated to specified statsOptions.
+        indexName = "controlTarget";
+        range = IDBKeyRange.only([aType, aOptions.manifestURL,
+                                  aOptions.serviceType, aOptions.component]);
+      } else { // Get all alarms of the specified type.
+        indexName = "type";
+        range = IDBKeyRange.only(aType);
+      }
+
+      let request = aStore.index(indexName).openCursor(range);
+      request.onsuccess = function onsuccess(aEvent) {
+        let cursor = aEvent.target.result;
+        if (cursor) {
+          aTxn.result.push(this._recordToAlarm(cursor.value));
+          cursor.continue();
+          return;
+        }
+      }.bind(this);
+    }.bind(this), aResultCb);
+  },
+
+  removeAlarm: function(aType, aAlarmId, aResultCb) {
+    if (DEBUG) {
+      debug("removeAlarms(" + aAlarmId + ")");
+    }
+
+    // Execute clear operation.
+    this._dbNewTxn(ALARM_STORE, "readwrite", function(aTxn, aStore) {
+      aStore.get(aAlarmId).onsuccess = function onsuccess(aEvent) {
+        let alarm = aEvent.target.result;
+        aTxn.result = false;
+        if (!alarm || aType !== alarm.type) {
+          return;
+        }
+
+        if (DEBUG) {
+          debug("Remove alarm " + JSON.stringify(alarm) + " from datastore");
+        }
+        aStore.delete(aAlarmId);
+        aTxn.result = true;
+      };
+    }, aResultCb);
+  },
+
+  removeAllAlarms: function(aType, aResultCb) {
+    if (DEBUG) {
+      debug(aType + "Mgr.removeAllAlarms()");
+    }
+
+    // Execute clear operation.
+    this._dbNewTxn(ALARM_STORE, "readwrite", function(aTxn, aStore) {
+      if (DEBUG) {
+        debug("Remove all " + aType + " alarms from datastore.");
+      }
+
+      let range = IDBKeyRange.only(aType);
+      let request = aStore.index("type").openCursor(range);
+      request.onsuccess = function onsuccess(aEvent) {
+        let cursor = aEvent.target.result;
+        if (cursor) {
+          if (DEBUG) {
+            debug("Remove " + JSON.stringify(cursor.value) + " from database.");
+          }
+          cursor.delete();
+          cursor.continue();
+          return;
+        }
+      };
+    }, aResultCb);
+  },
+
+  // Get all index keys of the component.
+  getComponents: function(aType, aResultCb) {
+    if (DEBUG) {
+      debug(aType + "Mgr.getComponents()");
+    }
+
+    let storeName = statsStoreNames[aType];
+
+    this._dbNewTxn(storeName, "readonly", function(aTxn, aStore) {
+      if (!aTxn.result) {
+        aTxn.result = [];
+      }
+
+      let request = aStore.index("component").openKeyCursor(null, "nextunique");
+      request.onsuccess = function onsuccess(aEvent) {
+        let cursor = aEvent.target.result;
+        if (cursor) {
+          aTxn.result.push(cursor.key);
+          cursor.continue();
+          return;
+        }
+
+        // Remove "" from the result, which indicates sum of all
+        // components' stats.
+        let index = aTxn.result.indexOf("");
+        if (index > -1) {
+          aTxn.result.splice(index, 1);
+        }
+      };
+    }, aResultCb);
+  },
+
+  get sampleRate () {
+    return SAMPLE_RATE;
+  },
+
+  get maxStorageAge() {
+    return MAX_STORAGE_AGE;
+  },
+};
+
diff --git a/dom/resourcestats/ResourceStatsManager.js b/dom/resourcestats/ResourceStatsManager.js
new file mode 100644
index 000000000..649f1873a
--- /dev/null
+++ b/dom/resourcestats/ResourceStatsManager.js
@@ -0,0 +1,480 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+"use strict";
+
+const DEBUG = false;
+function debug(s) { dump("-*- ResourceStatsManager: " + s + "\n"); }
+
+const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/DOMRequestHelper.jsm");
+
+// Constant defines supported statistics.
+const resourceTypeList = ["network", "power"];
+
+function NetworkStatsData(aStatsData) {
+  if (DEBUG) {
+    debug("NetworkStatsData(): " + JSON.stringify(aStatsData));
+  }
+
+  this.receivedBytes = aStatsData.receivedBytes || 0;
+  this.sentBytes = aStatsData.sentBytes || 0;
+  this.timestamp = aStatsData.timestamp;
+}
+
+NetworkStatsData.prototype = {
+  classID: Components.ID("{dce5729a-ba92-4185-8854-e29e71b9e8a2}"),
+  contractID: "@mozilla.org/networkStatsData;1",
+  QueryInterface: XPCOMUtils.generateQI([])
+};
+
+function PowerStatsData(aStatsData) {
+  if (DEBUG) {
+    debug("PowerStatsData(): " + JSON.stringify(aStatsData));
+  }
+
+  this.consumedPower = aStatsData.consumedPower || 0;
+  this.timestamp = aStatsData.timestamp;
+}
+
+PowerStatsData.prototype = {
+  classID: Components.ID("{acb9af6c-8143-4e59-bc18-4bb1736a4004}"),
+  contractID: "@mozilla.org/powerStatsData;1",
+  QueryInterface: XPCOMUtils.generateQI([])
+};
+
+function ResourceStats(aWindow, aStats) {
+  if (DEBUG) {
+    debug("ResourceStats(): " + JSON.stringify(aStats));
+  }
+
+  this._window = aWindow;
+  this.type = aStats.type;
+  this.component = aStats.component || null;
+  this.serviceType = aStats.serviceType || null;
+  this.manifestURL = aStats.manifestURL || null;
+  this.start = aStats.start;
+  this.end = aStats.end;
+  this.statsData = new aWindow.Array();
+
+  // A function creates a StatsData object according to type.
+  let createStatsDataObject = null;
+  let self = this;
+  switch (this.type) {
+    case "power":
+      createStatsDataObject = function(aStats) {
+        let chromeObj = new PowerStatsData(aStats);
+        return self._window.PowerStatsData._create(self._window, chromeObj);
+      };
+      break;
+    case "network":
+      createStatsDataObject = function(aStats) {
+        let chromeObj = new NetworkStatsData(aStats);
+        return self._window.NetworkStatsData._create(self._window, chromeObj);
+      };
+      break;
+  }
+
+  let sampleRate = aStats.sampleRate;
+  let queryResult = aStats.statsData;
+  let stats = queryResult.pop(); // Pop out the last element.
+  let timestamp = this.start;
+
+  // Push query result to statsData, and fill empty elements so that:
+  // 1. the timestamp of the first element of statsData is equal to start;
+  // 2. the timestamp of the last element of statsData is equal to end;
+  // 3. the timestamp difference of every neighboring elements is SAMPLE_RATE.
+  for (; timestamp <= this.end; timestamp += sampleRate) {
+    if (!stats || stats.timestamp != timestamp) {
+      // If dataArray is empty or timestamp are not equal, push a dummy object
+      // (which stats are set to 0) to statsData.
+      this.statsData.push(createStatsDataObject({ timestamp: timestamp }));
+    } else {
+      // Push stats to statsData and pop a new element form queryResult.
+      this.statsData.push(createStatsDataObject(stats));
+      stats = queryResult.pop();
+    }
+  }
+}
+
+ResourceStats.prototype = {
+  getData: function() {
+    return this.statsData;
+  },
+
+  classID: Components.ID("{b7c970f2-3d58-4966-9633-2024feb5132b}"),
+  contractID: "@mozilla.org/resourceStats;1",
+  QueryInterface: XPCOMUtils.generateQI([])
+};
+
+function ResourceStatsAlarm(aWindow, aAlarm) {
+  if (DEBUG) {
+    debug("ResourceStatsAlarm(): " + JSON.stringify(aAlarm));
+  }
+
+  this.alarmId = aAlarm.alarmId;
+  this.type = aAlarm.type;
+  this.component = aAlarm.component || null;
+  this.serviceType = aAlarm.serviceType || null;
+  this.manifestURL = aAlarm.manifestURL || null;
+  this.threshold = aAlarm.threshold;
+
+  // Clone data object using structured clone algorithm.
+  this.data = null;
+  if (aAlarm.data) {
+    this.data = Cu.cloneInto(aAlarm.data, aWindow);
+  }
+}
+
+ResourceStatsAlarm.prototype = {
+  classID: Components.ID("{e2b66e7a-0ff1-4015-8690-a2a3f6a5b63a}"),
+  contractID: "@mozilla.org/resourceStatsAlarm;1",
+  QueryInterface: XPCOMUtils.generateQI([]),
+};
+
+function ResourceStatsManager() {
+  if (DEBUG) {
+    debug("constructor()");
+  }
+}
+
+ResourceStatsManager.prototype = {
+  __proto__: DOMRequestIpcHelper.prototype,
+
+  _getPromise: function(aCallback) {
+    let self = this;
+    return this.createPromise(function(aResolve, aReject) {
+      let resolverId = self.getPromiseResolverId({
+        resolve: aResolve,
+        reject: aReject
+      });
+
+      aCallback(resolverId);
+    });
+  },
+
+  // Check time range.
+  _checkTimeRange: function(aStart, aEnd) {
+    if (DEBUG) {
+      debug("_checkTimeRange(): " + aStart + " to " + aEnd);
+    }
+
+    let start = aStart ? aStart : 0;
+    let end = aEnd ? aEnd : Date.now();
+
+    if (start > end) {
+      throw Cr.NS_ERROR_INVALID_ARG;
+    }
+
+    return { start: start, end: end };
+  },
+
+  getStats: function(aStatsOptions, aStart, aEnd) {
+    // Check time range.
+    let { start: start, end: end } = this._checkTimeRange(aStart, aEnd);
+
+    // Create Promise.
+    let self = this;
+    return this._getPromise(function(aResolverId) {
+      self.cpmm.sendAsyncMessage("ResourceStats:GetStats", {
+        resolverId: aResolverId,
+        type: self.type,
+        statsOptions: aStatsOptions,
+        manifestURL: self._manifestURL,
+        start: start,
+        end: end
+      });
+    });
+  },
+
+  clearStats: function(aStatsOptions, aStart, aEnd) {
+    // Check time range.
+    let {start: start, end: end} = this._checkTimeRange(aStart, aEnd);
+
+    // Create Promise.
+    let self = this;
+    return this._getPromise(function(aResolverId) {
+      self.cpmm.sendAsyncMessage("ResourceStats:ClearStats", {
+        resolverId: aResolverId,
+        type: self.type,
+        statsOptions: aStatsOptions,
+        manifestURL: self._manifestURL,
+        start: start,
+        end: end
+      });
+    });
+  },
+
+  clearAllStats: function() {
+    // Create Promise.
+    let self = this;
+    return this._getPromise(function(aResolverId) {
+      self.cpmm.sendAsyncMessage("ResourceStats:ClearAllStats", {
+        resolverId: aResolverId,
+        type: self.type,
+        manifestURL: self._manifestURL
+      });
+    });
+  },
+
+  addAlarm: function(aThreshold, aStatsOptions, aAlarmOptions) {
+    if (DEBUG) {
+      debug("aStatsOptions: " + JSON.stringify(aAlarmOptions));
+      debug("aAlarmOptions: " + JSON.stringify(aAlarmOptions));
+    }
+
+    // Parse alarm options.
+    let startTime = aAlarmOptions.startTime || 0;
+
+    // Clone data object using structured clone algorithm.
+    let data = null;
+    if (aAlarmOptions.data) {
+      data = Cu.cloneInto(aAlarmOptions.data, this._window);
+    }
+
+    // Create Promise.
+    let self = this;
+    return this._getPromise(function(aResolverId) {
+      self.cpmm.sendAsyncMessage("ResourceStats:AddAlarm", {
+        resolverId: aResolverId,
+        type: self.type,
+        threshold: aThreshold,
+        statsOptions: aStatsOptions,
+        manifestURL: self._manifestURL,
+        startTime: startTime,
+        data: data
+      });
+    });
+  },
+
+  getAlarms: function(aStatsOptions) {
+    // Create Promise.
+    let self = this;
+    return this._getPromise(function(aResolverId) {
+      self.cpmm.sendAsyncMessage("ResourceStats:GetAlarms", {
+        resolverId: aResolverId,
+        type: self.type,
+        statsOptions: aStatsOptions,
+        manifestURL: self._manifestURL
+      });
+    });
+  },
+
+  removeAlarm: function(aAlarmId) {
+    // Create Promise.
+    let self = this;
+    return this._getPromise(function(aResolverId) {
+      self.cpmm.sendAsyncMessage("ResourceStats:RemoveAlarm", {
+        resolverId: aResolverId,
+        type: self.type,
+        manifestURL: self._manifestURL,
+        alarmId: aAlarmId
+      });
+    });
+  },
+
+  removeAllAlarms: function() {
+    // Create Promise.
+    let self = this;
+    return this._getPromise(function(aResolverId) {
+      self.cpmm.sendAsyncMessage("ResourceStats:RemoveAllAlarms", {
+        resolverId: aResolverId,
+        type: self.type,
+        manifestURL: self._manifestURL
+      });
+    });
+  },
+
+  getAvailableComponents: function() {
+    // Create Promise.
+    let self = this;
+    return this._getPromise(function(aResolverId) {
+      self.cpmm.sendAsyncMessage("ResourceStats:GetComponents", {
+        resolverId: aResolverId,
+        type: self.type,
+        manifestURL: self._manifestURL
+      });
+    });
+  },
+
+  get resourceTypes() {
+    let types = new this._window.Array();
+    resourceTypeList.forEach(function(aType) {
+      types.push(aType);
+    });
+
+    return types;
+  },
+
+  get sampleRate() {
+    let msg = { manifestURL: this._manifestURL };
+
+    return this.cpmm.sendSyncMessage("ResourceStats:SampleRate", msg)[0];
+  },
+
+  get maxStorageAge() {
+    let msg = { manifestURL: this._manifestURL };
+
+    return this.cpmm.sendSyncMessage("ResourceStats:MaxStorageAge", msg)[0];
+  },
+
+  receiveMessage: function(aMessage) {
+    let data = aMessage.data;
+    let chromeObj = null;
+    let webidlObj = null;
+    let self = this;
+
+    if (DEBUG) {
+      debug("receiveMessage(): " + aMessage.name + " " + data.resolverId);
+    }
+
+    let resolver = this.takePromiseResolver(data.resolverId);
+    if (!resolver) {
+      return;
+    }
+
+    switch (aMessage.name) {
+      case "ResourceStats:GetStats:Resolved":
+        if (DEBUG) {
+          debug("data.value = " + JSON.stringify(data.value));
+        }
+
+        chromeObj = new ResourceStats(this._window, data.value);
+        webidlObj = this._window.ResourceStats._create(this._window, chromeObj);
+        resolver.resolve(webidlObj);
+        break;
+
+      case "ResourceStats:AddAlarm:Resolved":
+        if (DEBUG) {
+          debug("data.value = " + JSON.stringify(data.value));
+        }
+
+        resolver.resolve(data.value); // data.value is alarmId.
+        break;
+
+      case "ResourceStats:GetAlarms:Resolved":
+        if (DEBUG) {
+          debug("data.value = " + JSON.stringify(data.value));
+        }
+
+        let alarmArray = this._window.Array();
+        data.value.forEach(function(aAlarm) {
+          chromeObj = new ResourceStatsAlarm(self._window, aAlarm);
+          webidlObj = self._window.ResourceStatsAlarm._create(self._window,
+                                                              chromeObj);
+          alarmArray.push(webidlObj);
+        });
+        resolver.resolve(alarmArray);
+        break;
+
+      case "ResourceStats:GetComponents:Resolved":
+        if (DEBUG) {
+          debug("data.value = " + JSON.stringify(data.value));
+        }
+
+        let components = this._window.Array();
+        data.value.forEach(function(aComponent) {
+          components.push(aComponent);
+        });
+        resolver.resolve(components);
+        break;
+
+      case "ResourceStats:ClearStats:Resolved":
+      case "ResourceStats:ClearAllStats:Resolved":
+      case "ResourceStats:RemoveAlarm:Resolved":
+      case "ResourceStats:RemoveAllAlarms:Resolved":
+        if (DEBUG) {
+          debug("data.value = " + JSON.stringify(data.value));
+        }
+
+        resolver.resolve(data.value);
+        break;
+
+      case "ResourceStats:GetStats:Rejected":
+      case "ResourceStats:ClearStats:Rejected":
+      case "ResourceStats:ClearAllStats:Rejected":
+      case "ResourceStats:AddAlarm:Rejected":
+      case "ResourceStats:GetAlarms:Rejected":
+      case "ResourceStats:RemoveAlarm:Rejected":
+      case "ResourceStats:RemoveAllAlarms:Rejected":
+      case "ResourceStats:GetComponents:Rejected":
+        if (DEBUG) {
+          debug("data.reason = " + JSON.stringify(data.reason));
+        }
+
+        resolver.reject(data.reason);
+        break;
+
+      default:
+        if (DEBUG) {
+          debug("Could not find a handler for " + aMessage.name);
+        }
+        resolver.reject();
+    }
+  },
+
+  __init: function(aType) {
+    if (resourceTypeList.indexOf(aType) < 0) {
+      if (DEBUG) {
+        debug("Do not support resource statistics for " + aType);
+      }
+      throw Cr.NS_ERROR_INVALID_ARG;
+    } else {
+      if (DEBUG) {
+        debug("Create " + aType + "Mgr");
+      }
+      this.type = aType;
+    }
+  },
+
+  init: function(aWindow) {
+    if (DEBUG) {
+      debug("init()");
+    }
+
+    // Get the manifestURL if this is an installed app
+    let principal = aWindow.document.nodePrincipal;
+    let appsService = Cc["@mozilla.org/AppsService;1"]
+                        .getService(Ci.nsIAppsService);
+    this._manifestURL = appsService.getManifestURLByLocalId(principal.appId);
+
+    const messages = ["ResourceStats:GetStats:Resolved",
+                      "ResourceStats:ClearStats:Resolved",
+                      "ResourceStats:ClearAllStats:Resolved",
+                      "ResourceStats:AddAlarm:Resolved",
+                      "ResourceStats:GetAlarms:Resolved",
+                      "ResourceStats:RemoveAlarm:Resolved",
+                      "ResourceStats:RemoveAllAlarms:Resolved",
+                      "ResourceStats:GetComponents:Resolved",
+                      "ResourceStats:GetStats:Rejected",
+                      "ResourceStats:ClearStats:Rejected",
+                      "ResourceStats:ClearAllStats:Rejected",
+                      "ResourceStats:AddAlarm:Rejected",
+                      "ResourceStats:GetAlarms:Rejected",
+                      "ResourceStats:RemoveAlarm:Rejected",
+                      "ResourceStats:RemoveAllAlarms:Rejected",
+                      "ResourceStats:GetComponents:Rejected"];
+    this.initDOMRequestHelper(aWindow, messages);
+
+    this.cpmm = Cc["@mozilla.org/childprocessmessagemanager;1"]
+                  .getService(Ci.nsISyncMessageSender);
+  },
+
+  classID: Components.ID("{101ed1f8-31b3-491c-95ea-04091e6e8027}"),
+  contractID: "@mozilla.org/resourceStatsManager;1",
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIDOMGlobalPropertyInitializer,
+                                         Ci.nsISupportsWeakReference,
+                                         Ci.nsIObserver])
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([NetworkStatsData,
+                                                     PowerStatsData,
+                                                     ResourceStats,
+                                                     ResourceStatsAlarm,
+                                                     ResourceStatsManager]);
+
diff --git a/dom/resourcestats/ResourceStatsManager.manifest b/dom/resourcestats/ResourceStatsManager.manifest
new file mode 100644
index 000000000..985126ff2
--- /dev/null
+++ b/dom/resourcestats/ResourceStatsManager.manifest
@@ -0,0 +1,14 @@
+component {dce5729a-ba92-4185-8854-e29e71b9e8a2} ResourceStatsManager.js
+contract @mozilla.org/networkStatsData;1 {dce5729a-ba92-4185-8854-e29e71b9e8a2}
+
+component {acb9af6c-8143-4e59-bc18-4bb1736a4004} ResourceStatsManager.js
+contract @mozilla.org/powerStatsData;1 {acb9af6c-8143-4e59-bc18-4bb1736a4004}
+
+component {b7c970f2-3d58-4966-9633-2024feb5132b} ResourceStatsManager.js
+contract @mozilla.org/resourceStats;1 {b7c970f2-3d58-4966-9633-2024feb5132b}
+
+component {e2b66e7a-0ff1-4015-8690-a2a3f6a5b63a} ResourceStatsManager.js
+contract @mozilla.org/resourceStatsAlarm;1 {e2b66e7a-0ff1-4015-8690-a2a3f6a5b63a}
+
+component {101ed1f8-31b3-491c-95ea-04091e6e8027} ResourceStatsManager.js
+contract @mozilla.org/resourceStatsManager;1 {101ed1f8-31b3-491c-95ea-04091e6e8027}
diff --git a/dom/resourcestats/ResourceStatsService.jsm b/dom/resourcestats/ResourceStatsService.jsm
new file mode 100644
index 000000000..df4481eab
--- /dev/null
+++ b/dom/resourcestats/ResourceStatsService.jsm
@@ -0,0 +1,334 @@
+/* This Source Code Form is subject to the terms of the Mozilla public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+"use strict";
+
+this.EXPORTED_SYMBOLS = ["ResourceStatsService"];
+
+const DEBUG = false;
+function debug(s) { dump("-*- ResourceStatsService: " + s + "\n"); }
+
+const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+// Load ResourceStatsDB.
+Cu.import("resource://gre/modules/ResourceStatsDB.jsm");
+
+XPCOMUtils.defineLazyServiceGetter(this, "gIDBManager",
+                                   "@mozilla.org/dom/indexeddb/manager;1",
+                                   "nsIIndexedDatabaseManager");
+
+XPCOMUtils.defineLazyServiceGetter(this, "ppmm",
+                                   "@mozilla.org/parentprocessmessagemanager;1",
+                                   "nsIMessageListenerManager");
+
+XPCOMUtils.defineLazyServiceGetter(this, "appsService",
+                                   "@mozilla.org/AppsService;1",
+                                   "nsIAppsService");
+
+this.ResourceStatsService = {
+
+  init: function() {
+    if (DEBUG) {
+      debug("Service started");
+    }
+
+    // Set notification to observe.
+    Services.obs.addObserver(this, "xpcom-shutdown", false);
+
+    // Add message listener.
+    this.messages = ["ResourceStats:GetStats",
+                     "ResourceStats:ClearStats",
+                     "ResourceStats:ClearAllStats",
+                     "ResourceStats:AddAlarm",
+                     "ResourceStats:GetAlarms",
+                     "ResourceStats:RemoveAlarm",
+                     "ResourceStats:RemoveAllAlarms",
+                     "ResourceStats:GetComponents",
+                     "ResourceStats:SampleRate",
+                     "ResourceStats:MaxStorageAge"];
+
+    this.messages.forEach(function(aMessageName){
+      ppmm.addMessageListener(aMessageName, this);
+    }, this);
+
+    // Create indexedDB.
+    this._db = new ResourceStatsDB();
+  },
+
+  receiveMessage: function(aMessage) {
+    if (DEBUG) {
+      debug("receiveMessage(): " + aMessage.name);
+    }
+
+    let mm = aMessage.target;
+    let data = aMessage.data;
+
+    if (DEBUG) {
+      debug("received aMessage.data = " + JSON.stringify(data));
+    }
+
+    // To prevent the hacked child process from sending commands to parent,
+    // we need to check its permission and manifest URL.
+    if (!aMessage.target.assertPermission("resourcestats-manage")) {
+      return;
+    }
+    if (!aMessage.target.assertContainApp(data.manifestURL)) {
+      if (DEBUG) {
+        debug("Got msg from a child process containing illegal manifestURL.");
+      }
+      return;
+    }
+
+    switch (aMessage.name) {
+      case "ResourceStats:GetStats":
+        this.getStats(mm, data);
+        break;
+      case "ResourceStats:ClearStats":
+        this.clearStats(mm, data);
+        break;
+      case "ResourceStats:ClearAllStats":
+        this.clearAllStats(mm, data);
+        break;
+      case "ResourceStats:AddAlarm":
+        this.addAlarm(mm, data);
+        break;
+      case "ResourceStats:GetAlarms":
+        this.getAlarms(mm, data);
+        break;
+      case "ResourceStats:RemoveAlarm":
+        this.removeAlarm(mm, data);
+        break;
+      case "ResourceStats:RemoveAllAlarms":
+        this.removeAllAlarms(mm, data);
+        break;
+      case "ResourceStats:GetComponents":
+        this.getComponents(mm, data);
+        break;
+      case "ResourceStats:SampleRate":
+        // This message is sync.
+        return this._db.sampleRate;
+      case "ResourceStats:MaxStorageAge":
+        // This message is sync.
+        return this._db.maxStorageAge;
+    }
+  },
+
+  observe: function(aSubject, aTopic, aData) {
+    switch (aTopic) {
+      case "xpcom-shutdown":
+        if (DEBUG) {
+          debug("Service shutdown " + aData);
+        }
+
+        this.messages.forEach(function(aMessageName) {
+          ppmm.removeMessageListener(aMessageName, this);
+        }, this);
+
+        Services.obs.removeObserver(this, "xpcom-shutdown");
+        break;
+      default:
+        return;
+    }
+  },
+
+  // Closure generates callback function for DB request.
+  _createDbCallback: function(aMm, aId, aMessage) {
+    let resolveMsg = aMessage + ":Resolved";
+    let rejectMsg = aMessage + ":Rejected";
+
+    return function(aError, aResult) {
+      if (aError) {
+        aMm.sendAsyncMessage(rejectMsg, { resolverId: aId, reason: aError });
+        return;
+      }
+      aMm.sendAsyncMessage(resolveMsg, { resolverId: aId, value: aResult });
+    };
+  },
+
+  getStats: function(aMm, aData) {
+    if (DEBUG) {
+      debug("getStats(): " + JSON.stringify(aData));
+    }
+
+    // Note: we validate the manifestURL in _db.getStats().
+    let manifestURL = aData.statsOptions.manifestURL || "";
+    let serviceType = aData.statsOptions.serviceType || "";
+    let component = aData.statsOptions.component || "";
+
+    // Execute DB operation.
+    let onStatsGot = this._createDbCallback(aMm, aData.resolverId,
+                                            "ResourceStats:GetStats");
+    this._db.getStats(aData.type, manifestURL, serviceType, component,
+                      aData.start, aData.end, onStatsGot);
+  },
+
+  clearStats: function(aMm, aData) {
+    if (DEBUG) {
+      debug("clearStats(): " + JSON.stringify(aData));
+    }
+
+    // Get appId and check whether manifestURL is a valid app.
+    let appId = 0;
+    let manifestURL = aData.statsOptions.manifestURL || "";
+    if (manifestURL) {
+      appId = appsService.getAppLocalIdByManifestURL(manifestURL);
+
+      if (!appId) {
+        aMm.sendAsyncMessage("ResourceStats:GetStats:Rejected", {
+          resolverId: aData.resolverId,
+          reason: "Invalid manifestURL"
+        });
+        return;
+      }
+    }
+
+    let serviceType = aData.statsOptions.serviceType || "";
+    let component = aData.statsOptions.component || "";
+
+    // Execute DB operation.
+    let onStatsCleared = this._createDbCallback(aMm, aData.resolverId,
+                                                "ResourceStats:ClearStats");
+    this._db.clearStats(aData.type, appId, serviceType, component,
+                        aData.start, aData.end, onStatsCleared);
+  },
+
+  clearAllStats: function(aMm, aData) {
+    if (DEBUG) {
+      debug("clearAllStats(): " + JSON.stringify(aData));
+    }
+
+    // Execute DB operation.
+    let onAllStatsCleared = this._createDbCallback(aMm, aData.resolverId,
+                                                   "ResourceStats:ClearAllStats");
+    this._db.clearAllStats(aData.type, onAllStatsCleared);
+  },
+
+  addAlarm: function(aMm, aData) {
+    if (DEBUG) {
+      debug("addAlarm(): " + JSON.stringify(aData));
+    }
+
+    // Get appId and check whether manifestURL is a valid app.
+    let manifestURL = aData.statsOptions.manifestURL;
+    if (manifestURL) {
+      let appId = appsService.getAppLocalIdByManifestURL(manifestURL);
+
+      if (!appId) {
+        aMm.sendAsyncMessage("ResourceStats:GetStats:Rejected", {
+          resolverId: aData.resolverId,
+          reason: "Invalid manifestURL"
+        });
+        return;
+      }
+    }
+
+    // Create an alarm object.
+    let newAlarm = {
+      type: aData.type,
+      component: aData.statsOptions.component || "",
+      serviceType: aData.statsOptions.serviceType || "",
+      manifestURL: manifestURL || "",
+      threshold: aData.threshold,
+      startTime: aData.startTime,
+      data: aData.data
+    };
+
+    // Execute DB operation.
+    let onAlarmAdded = this._createDbCallback(aMm, aData.resolverId,
+                                              "ResourceStats:AddAlarm");
+    this._db.addAlarm(newAlarm, onAlarmAdded);
+  },
+
+  getAlarms: function(aMm, aData) {
+    if (DEBUG) {
+      debug("getAlarms(): " + JSON.stringify(aData));
+    }
+
+    let options = null;
+    let statsOptions = aData.statsOptions;
+    // If all keys in statsOptions are set to null, treat this call as quering
+    // all alarms; otherwise, resolve the statsOptions and perform DB query
+    // according to the resolved result.
+    if (statsOptions.manifestURL || statsOptions.serviceType ||
+        statsOptions.component) {
+      // Validate manifestURL.
+      let manifestURL = statsOptions.manifestURL || "";
+      if (manifestURL) {
+        let appId = appsService.getAppLocalIdByManifestURL(manifestURL);
+
+        if (!appId) {
+          aMm.sendAsyncMessage("ResourceStats:GetStats:Rejected", {
+            resolverId: aData.resolverId,
+            reason: "Invalid manifestURL"
+          });
+          return;
+        }
+      }
+
+      options = {
+        manifestURL: manifestURL,
+        serviceType: statsOptions.serviceType || "",
+        component: statsOptions.component || ""
+      };
+    }
+
+    // Execute DB operation.
+    let onAlarmsGot = this._createDbCallback(aMm, aData.resolverId,
+                                            "ResourceStats:GetAlarms");
+    this._db.getAlarms(aData.type, options, onAlarmsGot);
+  },
+
+  removeAlarm: function(aMm, aData) {
+    if (DEBUG) {
+      debug("removeAlarm(): " + JSON.stringify(aData));
+    }
+
+    // Execute DB operation.
+    let onAlarmRemoved = function(aError, aResult) {
+      if (aError) {
+        aMm.sendAsyncMessage("ResourceStats:RemoveAlarm:Rejected",
+                             { resolverId: aData.resolverId, reason: aError });
+      }
+
+      if (!aResult) {
+        aMm.sendAsyncMessage("ResourceStats:RemoveAlarm:Rejected",
+                             { resolverId: aData.resolverId,
+                               reason: "alarm not existed" });
+      }
+
+      aMm.sendAsyncMessage("ResourceStats:RemoveAlarm:Resolved",
+                           { resolverId: aData.resolverId, value: aResult });
+    };
+
+    this._db.removeAlarm(aData.type, aData.alarmId, onAlarmRemoved);
+  },
+
+  removeAllAlarms: function(aMm, aData) {
+    if (DEBUG) {
+      debug("removeAllAlarms(): " + JSON.stringify(aData));
+    }
+
+    // Execute DB operation.
+    let onAllAlarmsRemoved = this._createDbCallback(aMm, aData.resolverId,
+                                                    "ResourceStats:RemoveAllAlarms");
+    this._db.removeAllAlarms(aData.type, onAllAlarmsRemoved);
+  },
+
+  getComponents: function(aMm, aData) {
+    if (DEBUG) {
+      debug("getComponents(): " + JSON.stringify(aData));
+    }
+
+    // Execute DB operation.
+    let onComponentsGot = this._createDbCallback(aMm, aData.resolverId,
+                                                 "ResourceStats:GetComponents");
+    this._db.getComponents(aData.type, onComponentsGot);
+  },
+};
+
+this.ResourceStatsService.init();
+
diff --git a/dom/resourcestats/moz.build b/dom/resourcestats/moz.build
new file mode 100644
index 000000000..437457a63
--- /dev/null
+++ b/dom/resourcestats/moz.build
@@ -0,0 +1,22 @@
+# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+EXTRA_COMPONENTS += [
+    'ResourceStatsManager.js',
+    'ResourceStatsManager.manifest',
+]
+
+EXTRA_JS_MODULES += [
+    'ResourceStatsDB.jsm',
+    'ResourceStatsService.jsm',
+]
+
+FINAL_LIBRARY = 'xul'
+
+if CONFIG['MOZ_B2G_RIL']:
+    XPCSHELL_TESTS_MANIFESTS += ['tests/xpcshell/xpcshell.ini']
+
+MOCHITEST_MANIFESTS += ['tests/mochitest/mochitest.ini']
diff --git a/dom/resourcestats/tests/mochitest/mochitest.ini b/dom/resourcestats/tests/mochitest/mochitest.ini
new file mode 100644
index 000000000..dbcb05a5f
--- /dev/null
+++ b/dom/resourcestats/tests/mochitest/mochitest.ini
@@ -0,0 +1,16 @@
+[test_basic.html]
+skip-if = toolkit != "gonk"
+[test_network_stats.html]
+skip-if = toolkit != "gonk"
+[test_power_stats.html]
+skip-if = toolkit != "gonk"
+[test_network_alarm.html]
+skip-if = toolkit != "gonk"
+[test_power_alarm.html]
+skip-if = toolkit != "gonk"
+[test_disabled_pref.html]
+skip-if = toolkit != "gonk"
+[test_no_perm.html]
+skip-if = toolkit != "gonk"
+[test_not_supported_type.html]
+skip-if = toolkit != "gonk"
diff --git a/dom/resourcestats/tests/mochitest/test_basic.html b/dom/resourcestats/tests/mochitest/test_basic.html
new file mode 100644
index 000000000..d01762ddf
--- /dev/null
+++ b/dom/resourcestats/tests/mochitest/test_basic.html
@@ -0,0 +1,41 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test accessibility of interfaces</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+SimpleTest.waitForExplicitFinish();
+
+// Test accessibility of interfaces.
+SpecialPowers.addPermission("resourcestats-manage", true, document);
+SpecialPowers.pushPrefEnv({ 'set': [
+                            ["dom.resource_stats.enabled", true],
+                            ["dom.ignore_webidl_scope_checks", true]
+                          ]}, function() {
+  ok(SpecialPowers.hasPermission("resourcestats-manage", document),
+     "Has permission 'resourcestats-manage'.");
+  ok(SpecialPowers.getBoolPref("dom.resource_stats.enabled"),
+     "Preference 'dom.resource_stats.enabled' is true.");
+
+  // Check all interfaces are accessible.
+  ok('ResourceStatsManager' in window, "ResourceStatsManager exist.");
+  ok('ResourceStatsAlarm' in window, "ResourceStatsAlarm exist.");
+  ok('ResourceStats' in window, "ResourceStats exist.");
+  ok('NetworkStatsData' in window, "NetworkStatsData exist.");
+  ok('PowerStatsData' in window, "PowerStatsData exist.");
+
+  SimpleTest.finish();
+});
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/dom/resourcestats/tests/mochitest/test_disabled_pref.html b/dom/resourcestats/tests/mochitest/test_disabled_pref.html
new file mode 100644
index 000000000..1708ac0ae
--- /dev/null
+++ b/dom/resourcestats/tests/mochitest/test_disabled_pref.html
@@ -0,0 +1,41 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test to ensure interface is not accessible when preference is disabled</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+SimpleTest.waitForExplicitFinish();
+
+// Test to ensure interface is not accessible when preference is disabled.
+SpecialPowers.addPermission("resourcestats-manage", true, document);
+SpecialPowers.pushPrefEnv({ 'set': [
+                            ["dom.resource_stats.enabled", false],
+                            ["dom.ignore_webidl_scope_checks", true]
+                          ]}, function() {
+  ok(SpecialPowers.hasPermission("resourcestats-manage", document),
+     "Has permission 'resourcestats-manage'.");
+  ok(!(SpecialPowers.getBoolPref("dom.resource_stats.enabled")),
+     "Preference 'dom.resource_stats.enabled' is false.");
+
+  // Check accessibility.
+  is('ResourceStatsManager' in window, false, "ResourceStatsManager should not exist.");
+  is('ResourceStatsAlarm' in window, false, "ResourceStatsAlarm should not exist.");
+  is('ResourceStats' in window, false, "ResourceStats should not exist.");
+  is('NetworkStatsData' in window, false, "NetworkStatsData should not exist.");
+  is('PowerStatsData' in window, false, "PowerStatsData should not exist.");
+
+  SimpleTest.finish();
+});
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/dom/resourcestats/tests/mochitest/test_network_alarm.html b/dom/resourcestats/tests/mochitest/test_network_alarm.html
new file mode 100644
index 000000000..2b4afd677
--- /dev/null
+++ b/dom/resourcestats/tests/mochitest/test_network_alarm.html
@@ -0,0 +1,356 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for ResourceStats methods realted to network resource control</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+const invalidManifestURL = "app://invalid.gaiamobile.org/manifest.webapp";
+const wifiComponent = "wifi:0";
+const mobileComponent = "mobile:1";
+var networkStatsMgr = null; // ResourceStatsManager for network statistics.
+
+function errorCb(reason) {
+  ok(false, reason);
+}
+
+// Check the content returned by getAlarms.
+function checkAlarmsArray(alarms) {
+  // Check if data is an array.
+  if (!Array.isArray(alarms)) {
+    throw "getAlarms does not return an array.";
+  } else {
+    ok(true, "getAlarms returns an array.")
+  }
+
+  // Iterate the array and check the type of each element.
+  var obj = null;
+  var message = null; // Message for exception
+
+  for (var i = 0; i < alarms.length; i++) {
+    obj = alarms[i];
+
+    // Check if obj is an instance os ResourceStatsAlarm.
+    if (!(obj instanceof ResourceStatsAlarm)) {
+      message = "The array contains a non-ResourceStatsAlarm object.";
+      break;
+    }
+
+    // Check if obj.type is network.
+    if (obj.type != "network") {
+      message = "The type of a ResourceStatsAlarm object is not network.";
+      break;
+    }
+  }
+
+  if (message) {
+    throw message;
+  }
+
+  ok(true, "The return is an array of ResourceStatsAlarm objects.");
+}
+
+// Test Cases for testing WebIDL methods related to resource control.
+var testCases = [
+  function() {
+    // Test removeAllAlarms.
+    var promise = networkStatsMgr.removeAllAlarms();
+    promise.then(function() {
+      ok(true, "removeAllAlarms deleted all network alarms.");
+      testMethods();
+    }, function() {
+      ok(false, "removeAllAlarms failed to delete network alarms.");
+    });
+  },
+
+  function() {
+    // Test addAlarm.
+    var threshold = Math.floor(Math.random() * 1000);
+    var promise = networkStatsMgr.addAlarm(threshold,
+                                           { 'component': wifiComponent },
+                                           { 'startTime': Date.now() });
+    promise.then(function(value) {
+      // Check the value (alarmId).
+      if (value < 0) {
+        ok(false, "addAlarm failed to create an alarm.");
+      } else {
+        ok(true, "addAlarm created an alarm.");
+        testMethods();
+      }
+    }, function() {
+      ok(false, "addAlarm failed to create an alarm.");
+    });
+  },
+
+  function() {
+    // Test addAlarm with negative threshold.
+    var threshold = -1;
+    var promise = networkStatsMgr.addAlarm(threshold,
+                                           { 'component': wifiComponent },
+                                           { 'startTime': Date.now() });
+    promise.then(function() {
+      // Check the value.
+      ok(false,
+         "addAlarm did not throw an exception when negative threshold is set.");
+    }, function() {
+      ok(true, "addAlarm threw an exception when negative threshold is set.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test addAlarm with no threshold.
+    var promise = networkStatsMgr.addAlarm();
+    promise.then(function() {
+      // Check the value.
+      ok(false, "addAlarm did not throw an exception when no threshold.");
+    }, function() {
+      ok(true, "addAlarm threw an exception when no threshold.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test addAlarm with negative startTime.
+    var threshold = Math.floor(Math.random() * 1000);
+    var promise = networkStatsMgr.addAlarm(threshold,
+                                           { 'component': wifiComponent },
+                                           { 'startTime': -1 });
+    promise.then(function() {
+      // Check the value.
+      ok(false,
+         "addAlarm did not throw an exception when negative startTime is set.");
+    }, function() {
+      ok(true, "addAlarm threw an exception when negative startTime is set.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test addAlarm when manifestURL is invalid.
+    var threshold = Math.floor(Math.random() * 1000);
+    var promise = networkStatsMgr.addAlarm(threshold,
+                                           { 'component': wifiComponent,
+                                             'manifestURL': invalidManifestURL },
+                                           { 'startTime': Date.now() });
+    promise.then(function() {
+      // Check the value.
+      ok(false, "addAlarm did not throw an exception when manifestURL is invalid.");
+    }, function() {
+      ok(true, "addAlarm threw an exception when manifestURL is invalid.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test getAlarms.
+    var alarmId;
+    var alarms;
+    var threshold = Math.floor(Math.random() * 1000);
+
+    // Execution steps:
+    // 1. Add a new alarm.
+    var promise = networkStatsMgr.addAlarm(threshold,
+                                           { 'component': wifiComponent },
+                                           { 'startTime': Date.now() });
+
+    // 2. Test getAlarms if new alarm is added.
+    var runGetAlarms = function(value) {
+      alarmId = value;
+      return networkStatsMgr.getAlarms({ 'component': wifiComponent });
+    };
+
+    // 3. Check the content returned by getAlarms.
+    var checkGetAlarmsReturn = function(value) {
+      alarms = value;
+      checkAlarmsArray(value);
+    };
+
+    // 4. Check the alarm added in step 1 is inside the return of getAlarms.
+    var checkAlarm = function (value) {
+      // Find the alarm.
+      var index = alarms.map(function(e) { return e.alarmId; })
+                    .indexOf(alarmId);
+      if (index < 0) {
+        throw "getAlarms does not get the alarm added in previous step.";
+      }
+      var alarm = alarms[index];
+
+      // Evaluate the alarm.
+      ok(alarm.threshold == threshold, "threshold is equal.");
+      ok(alarm.component == wifiComponent, "component is equal.");
+      ok(alarm.serviceType == null, "serviceType should be null.");
+      ok(alarm.manifestURL == null, "manifestURL should be null.");
+    };
+
+    // Create promise chaining.
+    promise.then(runGetAlarms)
+      .then(checkGetAlarmsReturn)
+      .then(checkAlarm)
+      .then(testMethods, errorCb); // Execute next test case.
+  },
+
+  function() {
+    // Test getAlarms with invalid manifestURL.
+    var threshold = Math.floor(Math.random() * 1000);
+    var promise = networkStatsMgr.addAlarm(threshold,
+                                           { 'component': wifiComponent,
+                                             'manifestURL': invalidManifestURL },
+                                           { 'startTime': Date.now() });
+
+    promise.then(function() {
+      // Check the value.
+      ok(false, "getAlarms did not throw an exception when manifestURL is invalid.");
+    }, function() {
+      ok(true, "getAlarms threw an exception when manifestURL is invalid.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test getAlarms with incorrect parameter.
+    var threshold = Math.floor(Math.random() * 1000);
+
+    // Execution steps:
+    // 1. Add a new alarm.
+    var promise = networkStatsMgr.addAlarm(threshold,
+                                           { 'component': wifiComponent },
+                                           { 'startTime': Date.now() });
+
+    // 2. Call getAlarms with incorrect parameter.
+    var runGetAlarms = function() {
+      return networkStatsMgr.getAlarms({ 'component': mobileComponent });
+    };
+
+    // 3. check the content returned by getAlarms.
+    var checkGetAlarmsReturn = function(value) {
+      // Check array length
+      if (value.length) {
+        throw "getAlarms gets an alarm when using incorrect parameter.";
+      } else {
+        ok(true,
+           "getAlarms returns an empty array when using incorrect parameter.");
+      }
+    };
+
+    // Create pomise chaining.
+    promise.then(runGetAlarms)
+      .then(checkGetAlarmsReturn)
+      .then(testMethods, errorCb); // Execute next test case.
+  },
+
+  function() {
+    // Test removeAlarm
+    var alarmId;
+    var threshold = Math.floor(Math.random() * 1000);
+
+    // Execution steps:
+    // 1. Add a new alarm.
+    var promise = networkStatsMgr.addAlarm(threshold,
+                                           { 'component': wifiComponent },
+                                           { 'startTime': Date.now() });
+
+    // 2. Try to remove the new alarm.
+    var runRemoveAlarm = function(value) {
+      alarmId = value;
+      return networkStatsMgr.removeAlarm(alarmId);
+    }
+
+    // Create promise chaining.
+    promise.then(runRemoveAlarm)
+      .then(function() {
+        ok(true, "removeAlarm deleted the alarm.");
+        testMethods();
+      }, errorCb);
+  },
+
+  function() {
+    // Test removeAlarm with negative alarmId
+    var alarmId = -1;
+    var promise = networkStatsMgr.removeAlarm(alarmId);
+    promise.then(function() {
+      ok(false,
+         "removeAlarm did not throw an exception when negative alarmId is set.");
+    }, function() {
+      ok(true, "removeAlarm threw an exception when negative alarmId is set.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test removeAlarm with invalid alarmId
+    var alarmId;
+    var threshold = Math.floor(Math.random() * 1000);
+
+    // Execution steps:
+    // 1. Add a new alarm.
+    var promise = networkStatsMgr.addAlarm(threshold,
+                                           { 'component': wifiComponent },
+                                           { 'startTime': Date.now() });
+
+    // 2. Try to remove an invalid alarm.
+    var runRemoveAlarm = function(value) {
+      alarmId = value;
+      // Because alarmId is auto-increment, any alarmId larger than the
+      // latest alarmId should be invalid.
+      return networkStatsMgr.removeAlarm(alarmId + 10);
+    }
+
+    // Create promise chaining.
+    promise.then(runRemoveAlarm)
+      .then(function() {
+        // Input with incorrect alarmId should not be resolved.
+        throw "removeAlarm should fail with invalid alarmId.";
+      }, function(reason) {
+        if (reason == "alarm not existed") {
+          ok(true, "removeAlarm with invalid alarmId should fail.")
+        } else {
+          throw reason;
+        }
+      })
+      .then(testMethods, errorCb);
+  }
+];
+
+// Test WebIDL methods related stats operation.
+function testMethods() {
+  if (!testCases.length) {
+    ok(true, "Done.");
+    SpecialPowers.removePermission("resourcestats-manage", document);
+    SimpleTest.finish();
+    return;
+  }
+
+  var testCase = testCases.shift();
+  testCase();
+}
+
+function startTest() {
+  // Create an instance of ResourceStatsManager for network.
+  networkStatsMgr = new ResourceStatsManager("network");
+  ok(networkStatsMgr, "Create networkStatsMgr.");
+
+  // Test WebIDL methods related to resource control.
+  testMethods();
+}
+
+SimpleTest.waitForExplicitFinish();
+
+// Enable permission and preference.
+SpecialPowers.addPermission("resourcestats-manage", true, document);
+SpecialPowers.pushPrefEnv({ 'set': [
+                            ["dom.resource_stats.enabled", true],
+                            ["dom.ignore_webidl_scope_checks", true]
+                          ]}, startTest);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/dom/resourcestats/tests/mochitest/test_network_stats.html b/dom/resourcestats/tests/mochitest/test_network_stats.html
new file mode 100644
index 000000000..bee1914b3
--- /dev/null
+++ b/dom/resourcestats/tests/mochitest/test_network_stats.html
@@ -0,0 +1,345 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for ResourceStats methods realted to network statistics</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+const invalidManifestURL = "app://invalid.gaiamobile.org/manifest.webapp";
+var networkStatsMgr = null; // ResourceStatsManager for network statistics.
+var sampleRate = 0;
+
+// Test WebIDL attributes.
+function testAttributes() {
+  // Test sampleRate.
+  ok('sampleRate' in networkStatsMgr,
+   "sampleRate should be a ResourceStatsManager attribute.");
+  sampleRate = networkStatsMgr.sampleRate;
+  ok(sampleRate > 0, "sampleRate is greater than 0.");
+
+  // Test maxStorageAge.
+  ok('maxStorageAge' in networkStatsMgr,
+   "maxStorageAge should be a ResourceStatsManager attribute.");
+  ok(networkStatsMgr.maxStorageAge > 0,
+   "maxStorageAge is greater than 0.");
+
+  // Test whether "network" in resourceTypes array.
+  ok('resourceTypes' in networkStatsMgr,
+   "resourceTypes should be a ResourceStatsManager attribute.");
+  ok(Array.isArray(networkStatsMgr.resourceTypes),
+   "networkStatsMgr.resourceTypes is an array.");
+  ok(networkStatsMgr.resourceTypes.indexOf("network") > -1,
+   "'network' is an element of networkStatsMgr.resourceTypes.");
+}
+
+// Check the content returned by ResourceStats.getData().
+function checkData(data, start, end) {
+  // Check if data is an array.
+  if (!Array.isArray(data)) {
+    ok(false, "getData does not return an array.")
+    return;
+  } else {
+    ok(true, "getData returns an array.")
+  }
+
+  // Iterate the array and check the timestamp and type of each element.
+  var success = true;
+  var obj = null;
+  var timestamp = start;
+  var i = 0;
+  var length = data.length;
+
+  do {
+    obj = data[i++];
+
+    // Check object type.
+    if (!(obj instanceof NetworkStatsData)) {
+      success = false;
+      ok(false, "The array contains a non-NetworkStatsData object.");
+      break;
+    }
+
+    // Check if the timestamp is continuous.
+    if (obj.timestamp !== timestamp) {
+      success = false;
+      ok(false, "The timestamp of NetworkStatsData object is correct.");
+      break;
+    }
+
+    timestamp += sampleRate;
+  } while (i < length);
+
+  if (!success) {
+    return;
+  }
+
+  // Check the timestamp of the last element is equal to end.
+  if (obj.timestamp != end) {
+    ok(false,
+       "The timestamp of the last element of the array is equal to end.");
+    return;
+  }
+
+  // Execute next test case.
+  ok(true, "The return of getData is an array of NetworkStatsData objects.");
+  testMethods();
+}
+
+// Test Cases for testing WebIDL methods.
+var testCases = [
+  function() {
+    // Test clearAllStats.
+    var promise = networkStatsMgr.clearAllStats();
+    promise.then(function() {
+      ok(true, "clearAllStats clears the network store.");
+      testMethods();
+    }, function() {
+      ok(false, "clearAllStats fails to clear the network store.");
+    });
+  },
+
+  function() {
+    // Test clearStats.
+    var promise = networkStatsMgr.clearStats();
+    promise.then(function() {
+      ok(true, "clearStats clears the network store.");
+      testMethods();
+    }, function() {
+      ok(false, "clearStats fails to clear the network store.");
+    });
+  },
+
+  function() {
+    // Check if clearStats throw exception when start is great than end.
+    var end = Date.now();
+    var start = end + 1000;
+    var promise = networkStatsMgr.clearStats(null, start, end);
+    promise.then(function() {
+      ok(false,
+         "clearStats does not throw exception when start is great than end.");
+    }, function() {
+      ok(true, "clearStats throw exception when start is great than end.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Check if clearStats throw exception when start is less than 0.
+    var end = Date.now();
+    var start = -1;
+    var promise = networkStatsMgr.clearStats(null, start, end);
+    promise.then(function() {
+      ok(false,
+         "clearStats dose not throw exception when start is less than 0.");
+    }, function() {
+      ok(true, "clearStats throw exception when start is less than 0.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Check if clearStats throw exception when manifestURL is invalid.
+    var options = {manifestURL: invalidManifestURL};
+    var promise = networkStatsMgr.clearStats(options);
+    promise.then(function() {
+      ok(false,
+         "clearStats does not throw exception when manifestURL is invalid.");
+    }, function() {
+      ok(true, "clearStats throw exception when manifestURL is invalid.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test getAvailableComponents.
+    var promise = networkStatsMgr.getAvailableComponents();
+    promise.then(function(value) {
+      if (Array.isArray(value)) {
+        ok(true, "getAvailableComponents returns an array.");
+        testMethods();
+      } else {
+        ok(false, "getAvailableComponents does not return an array.");
+      }
+    }, function() {
+      ok(false, "Fail to execute getAvailableComponents.");
+    });
+  },
+
+  function() {
+    // Test getStats.
+    ok(true, "Get system stats when start and end are adapted to sampleRate.");
+
+    // Prepare start and end.
+    var offset = (new Date()).getTimezoneOffset() * 60 * 1000;
+    var end = Math.floor((Date.now() - offset) / sampleRate) * sampleRate + offset;
+    var start = end - sampleRate * 10;
+
+    // Launch request.
+    var promise = networkStatsMgr.getStats(null, start, end);
+    promise.then(function(value) {
+      // Check the object type.
+      if (value instanceof ResourceStats) {
+        ok(true, "Get a ResourceStats object.");
+      } else {
+        ok(false, "Fail to get a ResourceStats object.");
+        return;
+      }
+
+      // Check attributes of ResourceStats.
+      ok(value.type == "network", "type should be network.");
+      ok(value.component == null, "component should be null.");
+      ok(value.serviceType == null, "serviceType should be null.");
+      ok(value.manifestURL == null, "manifestURL should be null.");
+
+      // Check if the time range of ResourceStats is equal to the request.
+      ok(value.start == start, "start timestamp should be equal.");
+      ok(value.end == end, "end timestamp should be equal.");
+
+      // Check stats stored inside ResourceStats.
+      if ('getData' in value) {
+        checkData(value.getData(), start, end);
+      } else {
+        ok(false, "getData is not a method of ResourceStats.");
+        return;
+      }
+    }, function() {
+      ok(false, "Get network stats failed.");
+    });
+  },
+
+  function() {
+    // Test getStats when start and end are not adapted to sampleRate.
+    ok(true,
+       "Get system stats when start and end are not adapted to sampleRate.");
+
+    // Prepare start and end.
+    var end = Date.now();
+    var start = end - sampleRate * 10;
+
+    // Normalize start and end.
+    var offset = (new Date()).getTimezoneOffset() * 60 * 1000;
+    var normEnd = Math.floor((end - offset) / sampleRate)
+                    * sampleRate + offset;
+    var normStart = Math.floor((start - offset) / sampleRate)
+                      * sampleRate + offset;
+
+    // Launch request.
+    var promise = networkStatsMgr.getStats(null, start, end);
+    promise.then(function(value) {
+      // Check the object type.
+      if (value instanceof ResourceStats) {
+        ok(true, "Get a ResourceStats object.");
+      } else {
+        ok(false, "Fail to get a ResourceStats object.");
+        return;
+      }
+
+      // Check attributes of ResourceStats.
+      ok(value.type == "network", "type should be network.");
+      ok(value.component == null, "component should be null.");
+      ok(value.serviceType == null, "serviceType should be null.");
+      ok(value.manifestURL == null, "manifestURL should be null.");
+
+      // Check if time range of ResourceStats are normalized.
+      ok(value.start == normStart, "start timestamp should be normalized.");
+      ok(value.end == normEnd, "end timestamp should be normalized.");
+
+      // Check stats stored inside ResourceStats.
+      if ('getData' in value) {
+        checkData(value.getData(), normStart, normEnd);
+      } else {
+        ok(false, "getData is not a method of ResourceStats.");
+        return;
+      }
+    }, function() {
+      ok(false, "Get network stats failed.");
+    });
+  },
+
+  function () {
+    // Check if getStats throw exception when start is greater than end.
+    var end = Date.now();
+    var start = end + 1000;
+    var promise = networkStatsMgr.getStats(null, start, end);
+    promise.then(function() {
+      ok(false,
+         "getStats dose not throw exception when start is great than end.");
+    }, function() {
+      ok(true, "getStats throw exception when start is great than end.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Check if getStats throw exception when start is less than 0.
+    var end = Date.now();
+    var start = -1;
+    var promise = networkStatsMgr.getStats(null, start, end);
+    promise.then(function() {
+      ok(false,
+         "getStats dose not throw exception when start is less than 0.");
+    }, function() {
+      ok(true, "getStats throw exception when start is less than 0.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Check if getStats throw exception when manifestURL is invalid.
+    var options = {manifestURL: invalidManifestURL};
+    var promise = networkStatsMgr.getStats(options);
+    promise.then(function(value) {
+      ok(false,
+         "getStats does not throw exception when manifestURL is invalid.");
+    }, function() {
+      ok(true, "getStats throw exception when manifestURL is invalid.");
+      testMethods();
+    });
+  }
+];
+
+// Test WebIDL methods related stats operation.
+function testMethods() {
+  if (!testCases.length) {
+    ok(true, "Done.");
+    SpecialPowers.removePermission("resourcestats-manage", document);
+    SimpleTest.finish();
+    return;
+  }
+
+  var testCase = testCases.shift();
+  testCase();
+}
+
+function startTest() {
+  // Create an instance of ResourceStatsManager for network stats.
+  networkStatsMgr = new window.ResourceStatsManager("network");
+  ok(networkStatsMgr, "Create networkStatsMgr.");
+
+  // Test WebIDL attributes.
+  testAttributes();
+
+  // Test WebIDL methods related to stats operation.
+  testMethods();
+}
+
+SimpleTest.waitForExplicitFinish();
+
+// Enable permission and preference.
+SpecialPowers.addPermission("resourcestats-manage", true, document);
+SpecialPowers.pushPrefEnv({ 'set': [
+                            ["dom.resource_stats.enabled", true],
+                            ["dom.ignore_webidl_scope_checks", true]
+                          ]}, startTest);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/dom/resourcestats/tests/mochitest/test_no_perm.html b/dom/resourcestats/tests/mochitest/test_no_perm.html
new file mode 100644
index 000000000..d32c5ee88
--- /dev/null
+++ b/dom/resourcestats/tests/mochitest/test_no_perm.html
@@ -0,0 +1,38 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test to ensure ResourceStatsManager is not accessible without permission</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+SimpleTest.waitForExplicitFinish();
+
+// Test to ensure ResourceStatsManager is not accessible without permission.
+SpecialPowers.removePermission("resourcestats-manage", document);
+SpecialPowers.pushPrefEnv({ 'set': [
+                            ["dom.resource_stats.enabled", true],
+                            ["dom.ignore_webidl_scope_checks", true]
+                          ]}, function() {
+  ok(!(SpecialPowers.hasPermission("resourcestats-manage", document)),
+     "Do not have permission 'resourcestats-manage'.");
+  ok(SpecialPowers.getBoolPref("dom.resource_stats.enabled"),
+     "Preference 'dom.resource_stats.enabled' is true.");
+
+  // Check ResourceStatsManager exist.
+  ok(!('ResourceStatsManager' in window),
+     "Cannot access window.ResourceStatsManager when have no permission");
+
+  SimpleTest.finish();
+});
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/dom/resourcestats/tests/mochitest/test_not_supported_type.html b/dom/resourcestats/tests/mochitest/test_not_supported_type.html
new file mode 100644
index 000000000..50ffb3b59
--- /dev/null
+++ b/dom/resourcestats/tests/mochitest/test_not_supported_type.html
@@ -0,0 +1,41 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test to ensure ResourceStatsManager does not create an instance for non-supported type</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+const type = "non-supported";
+
+SimpleTest.waitForExplicitFinish();
+
+// Test to ensure ResourceStatsManager does not create an instance for
+// non-supported type.
+SpecialPowers.addPermission("resourcestats-manage", true, document);
+SpecialPowers.pushPrefEnv({ 'set': [
+                            ["dom.resource_stats.enabled", true],
+                            ["dom.ignore_webidl_scope_checks", true]
+                          ]}, function() {
+  try {
+    var mgr = ResourceStatsManager(type);
+    ok(false,
+       "Creating an instance for non-supported type should throw an exeception.");
+  } catch (ex) {
+    ok(ex,
+       "Got an exception when creating an instance for non-supported type.");
+  }
+
+  SimpleTest.finish();
+});
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/dom/resourcestats/tests/mochitest/test_power_alarm.html b/dom/resourcestats/tests/mochitest/test_power_alarm.html
new file mode 100644
index 000000000..abce5cfa4
--- /dev/null
+++ b/dom/resourcestats/tests/mochitest/test_power_alarm.html
@@ -0,0 +1,355 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for ResourceStats methods realted to power resource control</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+const invalidManifestURL = "app://invalid.gaiamobile.org/manifest.webapp";
+const cpuComponent = "cpu:0";
+const gpsComponent = "gps:0";
+var powerStatsMgr = null; // ResourceStatsManager for power statistics.
+
+function errorCb(reason) {
+  ok(false, reason);
+}
+
+// Check the content returned by getAlarms.
+function checkAlarmsArray(alarms) {
+  // Check if data is an array.
+  if (!Array.isArray(alarms)) {
+    throw "getAlarms does not return an array.";
+  } else {
+    ok(true, "getAlarms returns an array.")
+  }
+
+  // Iterate the array and check the type of each element.
+  var obj = null;
+  var message = null; // Message for exception
+
+  for (var i = 0; i < alarms.length; i++) {
+    obj = alarms[i];
+
+    // Check if obj is an instance os ResourceStatsAlarm.
+    if (!(obj instanceof ResourceStatsAlarm)) {
+      message = "The array contains a non-ResourceStatsAlarm object.";
+      break;
+    }
+
+    // Check if obj.type is power.
+    if (obj.type != "power") {
+      message = "The type of a ResourceStatsAlarm object is not power.";
+      break;
+    }
+  }
+
+  if (message) {
+    throw message;
+  }
+
+  ok(true, "The return is an array of ResourceStatsAlarm objects.");
+}
+
+// Test Cases for testing WebIDL methods related to resource control.
+var testCases = [
+  function() {
+    // Test removeAllAlarms.
+    var promise = powerStatsMgr.removeAllAlarms();
+    promise.then(function() {
+      ok(true, "removeAllAlarms deleted all power alarms.");
+      testMethods();
+    }, function() {
+      ok(false, "removeAllAlarms failed to delete power alarms.");
+    });
+  },
+
+  function() {
+    // Test addAlarm.
+    var threshold = Math.floor(Math.random() * 1000);
+    var promise = powerStatsMgr.addAlarm(threshold,
+                                         { 'component': cpuComponent },
+                                         { 'startTime': Date.now() });
+    promise.then(function(value) {
+      // Check the value (alarmId).
+      if (value < 0) {
+        ok(false, "addAlarm failed to create an alarm.");
+      } else {
+        ok(true, "addAlarm created an alarm.");
+        testMethods();
+      }
+    }, function() {
+      ok(false, "addAlarm failed to create an alarm.");
+    });
+  },
+
+  function() {
+    // Test addAlarm with negative threshold.
+    var threshold = -1;
+    var promise = powerStatsMgr.addAlarm(threshold,
+                                         { 'component': cpuComponent },
+                                         { 'startTime': Date.now() });
+    promise.then(function() {
+      // Check the value.
+      ok(false,
+         "addAlarm did not throw an exception when negative threshold is set.");
+    }, function() {
+      ok(true, "addAlarm threw an exception when negative threshold is set.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test addAlarm with no threshold.
+    var promise = powerStatsMgr.addAlarm();
+    promise.then(function() {
+      // Check the value.
+      ok(false, "addAlarm did not throw an exception when no threshold.");
+    }, function() {
+      ok(true, "addAlarm threw an exception when no threshold.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test addAlarm with negative startTime.
+    var threshold = Math.floor(Math.random() * 1000);
+    var promise = powerStatsMgr.addAlarm(threshold,
+                                         { 'component': cpuComponent },
+                                         { 'startTime': -1 });
+    promise.then(function() {
+      // Check the value.
+      ok(false,
+         "addAlarm did not throw an exception when negative startTime is set.");
+    }, function() {
+      ok(true, "addAlarm threw an exception when negative startTime is set.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test addAlarm when manifestURL is invalid.
+    var threshold = Math.floor(Math.random() * 1000);
+    var promise = powerStatsMgr.addAlarm(threshold,
+                                         { 'component': cpuComponent,
+                                           'manifestURL': invalidManifestURL },
+                                         { 'startTime': Date.now() });
+    promise.then(function() {
+      // Check the value.
+      ok(false, "addAlarm did not throw an exception when manifestURL is invalid.");
+    }, function() {
+      ok(true, "addAlarm threw an exception when manifestURL is invalid.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test getAlarms.
+    var alarmId;
+    var alarms;
+    var threshold = Math.floor(Math.random() * 1000);
+
+    // Execution steps:
+    // 1. Add a new alarm.
+    var promise = powerStatsMgr.addAlarm(threshold,
+                                         { 'component': cpuComponent },
+                                         { 'startTime': Date.now() });
+
+    // 2. Test getAlarms if new alarm is added.
+    var runGetAlarms = function(value) {
+      alarmId = value;
+      return powerStatsMgr.getAlarms({ 'component': cpuComponent });
+    };
+
+    // 3. Check the content returned by getAlarms.
+    var checkGetAlarmsReturn = function(value) {
+      alarms = value;
+      checkAlarmsArray(value);
+    };
+
+    // 4. Check the alarm added in step 1 is inside the return of getAlarms.
+    var checkAlarm = function (value) {
+      // Find the alarm.
+      var index = alarms.map(function(e) { return e.alarmId; })
+                    .indexOf(alarmId);
+      if (index < 0) {
+        throw "getAlarms does not get the alarm added in previous step.";
+      }
+      var alarm = alarms[index];
+
+      // Evaluate the alarm.
+      ok(alarm.threshold == threshold, "threshold is equal.");
+      ok(alarm.component == cpuComponent, "component is equal.");
+      ok(alarm.serviceType == null, "serviceType should be null.");
+      ok(alarm.manifestURL == null, "manifestURL should be null.");
+    };
+
+    // Create promise chaining.
+    promise.then(runGetAlarms)
+      .then(checkGetAlarmsReturn)
+      .then(checkAlarm)
+      .then(testMethods, errorCb); // Execute next test case.
+  },
+
+  function() {
+    // Test getAlarms with invalid manifestURL.
+    var threshold = Math.floor(Math.random() * 1000);
+    var promise = powerStatsMgr.addAlarm(threshold,
+                                         { 'component': cpuComponent,
+                                           'manifestURL': invalidManifestURL },
+                                         { 'startTime': Date.now() });
+
+    promise.then(function() {
+      // Check the value.
+      ok(false, "getAlarms did not throw an exception when manifestURL is invalid.");
+    }, function() {
+      ok(true, "getAlarms threw an exception when manifestURL is invalid.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test getAlarms with incorrect parameter.
+    var threshold = Math.floor(Math.random() * 1000);
+
+    // Execution steps:
+    // 1. Add a new alarm.
+    var promise = powerStatsMgr.addAlarm(threshold,
+                                         { 'component': cpuComponent },
+                                         { 'startTime': Date.now() });
+
+    // 2. Call getAlarms with incorrect parameter.
+    var runGetAlarms = function() {
+      return powerStatsMgr.getAlarms({ 'component': gpsComponent });
+    };
+
+    // 3. check the content returned by getAlarms.
+    var checkGetAlarmsReturn = function(value) {
+      // Check array length
+      if (value.length) {
+        throw "getAlarms gets an alarm when using incorrect parameter.";
+      } else {
+        ok(true,
+           "getAlarms returns an empty array when using incorrect parameter.");
+      }
+    };
+
+    // Create pomise chaining.
+    promise.then(runGetAlarms)
+      .then(checkGetAlarmsReturn)
+      .then(testMethods, errorCb); // Execute next test case.
+  },
+
+  function() {
+    // Test removeAlarm
+    var alarmId;
+    var threshold = Math.floor(Math.random() * 1000);
+
+    // Execution steps:
+    // 1. Add a new alarm.
+    var promise = powerStatsMgr.addAlarm(threshold,
+                                         { 'component': cpuComponent },
+                                         { 'startTime': Date.now() });
+
+    // 2. Try to remove the new alarm.
+    var runRemoveAlarm = function(value) {
+      alarmId = value;
+      return powerStatsMgr.removeAlarm(alarmId);
+    }
+
+    // Create promise chaining.
+    promise.then(runRemoveAlarm)
+      .then(function() {
+        ok(true, "removeAlarm deleted the alarm.");
+        testMethods();
+      }, errorCb);
+  },
+
+  function() {
+    // Test removeAlarm with negative alarmId
+    var alarmId = -1;
+    var promise = powerStatsMgr.removeAlarm(alarmId);
+    promise.then(function() {
+      ok(false,
+         "removeAlarm did not throw an exception when negative alarmId is set.");
+    }, function() {
+      ok(true, "removeAlarm threw an exception when negative alarmId is set.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test removeAlarm with invalid alarmId
+    var alarmId;
+    var threshold = Math.floor(Math.random() * 1000);
+
+    // Execution steps:
+    // 1. Add a new alarm.
+    var promise = powerStatsMgr.addAlarm(threshold,
+                                         { 'component': cpuComponent },
+                                         { 'startTime': Date.now() });
+
+    // 2. Try to remove an invalid alarm.
+    var runRemoveAlarm = function(value) {
+      alarmId = value;
+      // Because alarmId is auto-increment, any alarmId larger than the
+      // latest alarmId should be invalid.
+      return powerStatsMgr.removeAlarm(alarmId + 10);
+    }
+
+    // Create promise chaining.
+    promise.then(runRemoveAlarm)
+      .then(function() {
+        // Input with incorrect alarmId should not be resolved.
+        throw "removeAlarm should fail with invalid alarmId.";
+      }, function(reason) {
+        if (reason == "alarm not existed") {
+          ok(true, "removeAlarm with invalid alarmId should fail.")
+        } else {
+          throw reason;
+        }
+      })
+      .then(testMethods, errorCb);
+  }
+];
+
+// Test WebIDL methods related stats operation.
+function testMethods() {
+  if (!testCases.length) {
+    ok(true, "Done.");
+    SpecialPowers.removePermission("resourcestats-manage", document);
+    SimpleTest.finish();
+    return;
+  }
+
+  var testCase = testCases.shift();
+  testCase();
+}
+
+function startTest() {
+  // Create an instance of ResourceStatsManager for power.
+  powerStatsMgr = new ResourceStatsManager("power");
+  ok(powerStatsMgr, "Create powerStatsMgr.");
+
+  // Test WebIDL methods related to resource control.
+  testMethods();
+}
+
+SimpleTest.waitForExplicitFinish();
+
+// Enable permission and preference.
+SpecialPowers.addPermission("resourcestats-manage", true, document);
+SpecialPowers.pushPrefEnv({ 'set': [
+                            ["dom.resource_stats.enabled", true],
+                            ["dom.ignore_webidl_scope_checks", true]
+                          ]}, startTest);
+</script>
+</pre>
+</body>
+</html>
diff --git a/dom/resourcestats/tests/mochitest/test_power_stats.html b/dom/resourcestats/tests/mochitest/test_power_stats.html
new file mode 100644
index 000000000..a1327df59
--- /dev/null
+++ b/dom/resourcestats/tests/mochitest/test_power_stats.html
@@ -0,0 +1,345 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test for ResourceStats methods realted to power statistics</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+const invalidManifestURL = "app://invalid.gaiamobile.org/manifest.webapp";
+var powerStatsMgr = null; // ResourceStatsManager for power statistics.
+var sampleRate = 0;
+
+// Test WebIDL attributes.
+function testAttributes() {
+  // Test sampleRate.
+  ok('sampleRate' in powerStatsMgr,
+   "sampleRate should be a ResourceStatsManager attribute.");
+  sampleRate = powerStatsMgr.sampleRate;
+  ok(sampleRate > 0, "sampleRate is greater than 0.");
+
+  // Test maxStorageAge.
+  ok('maxStorageAge' in powerStatsMgr,
+   "maxStorageAge should be a ResourceStatsManager attribute.");
+  ok(powerStatsMgr.maxStorageAge > 0,
+   "maxStorageAge is greater than 0.");
+
+  // Test whether "power" in resourceTypes array.
+  ok('resourceTypes' in powerStatsMgr,
+   "resourceTypes should be a ResourceStatsManager attribute.");
+  ok(Array.isArray(powerStatsMgr.resourceTypes),
+   "powerStatsMgr.resourceTypes is an array.");
+  ok(powerStatsMgr.resourceTypes.indexOf("power") > -1,
+   "'power' is an element of powerStatsMgr.resourceTypes.");
+}
+
+// Check the content returned by ResourceStats.getData().
+function checkData(data, start, end) {
+  // Check if data is an array.
+  if (!Array.isArray(data)) {
+    ok(false, "getData does not return an array.")
+    return;
+  } else {
+    ok(true, "getData returns an array.")
+  }
+
+  // Iterate the array and check the timestamp and type of each element.
+  var success = true;
+  var obj = null;
+  var timestamp = start;
+  var i = 0;
+  var length = data.length;
+
+  do {
+    obj = data[i++];
+
+    // Check object type.
+    if (!(obj instanceof PowerStatsData)) {
+      success = false;
+      ok(false, "The array contains a non-PowerStatsData object.");
+      break;
+    }
+
+    // Check if the timestamp is continuous.
+    if (obj.timestamp != timestamp) {
+      success = false;
+      ok(false, "The timestamp of PowerStatsData object is correct.");
+      break;
+    }
+
+    timestamp += sampleRate;
+  } while (i < length);
+
+  if (!success) {
+    return;
+  }
+
+  // Check the timestamp of the last element is equal to end.
+  if (obj.timestamp != end) {
+    ok(false,
+       "The timestamp of the last element of the array is equal to end.");
+    return;
+  }
+
+  // Execute next test case.
+  ok(true, "The return of getData is an array of PowerStatsData objects.");
+  testMethods();
+}
+
+// Test Cases for testing WebIDL methods.
+var testCases = [
+  function() {
+    // Test clearAllStats.
+    var promise = powerStatsMgr.clearAllStats();
+    promise.then(function() {
+      ok(true, "clearAllStats clears the power store.");
+      testMethods();
+    }, function() {
+      ok(false, "clearAllStats fails to clear the power store.");
+    });
+  },
+
+  function() {
+    // Test clearStats.
+    var promise = powerStatsMgr.clearStats();
+    promise.then(function() {
+      ok(true, "clearStats clears the power store.");
+      testMethods();
+    }, function() {
+      ok(false, "clearStats fails to clear the power store.");
+    });
+  },
+
+  function() {
+    // Check if clearStats throw exception when start is great than end.
+    var end = Date.now();
+    var start = end + 1000;
+    var promise = powerStatsMgr.clearStats(null, start, end);
+    promise.then(function() {
+      ok(false,
+         "clearStats does not throw exception when start is great than end.");
+    }, function() {
+      ok(true, "clearStats throw exception when start is great than end.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Check if clearStats throw exception when start is less than 0.
+    var end = Date.now();
+    var start = -1;
+    var promise = powerStatsMgr.clearStats(null, start, end);
+    promise.then(function() {
+      ok(false,
+         "clearStats dose not throw exception when start is less than 0.");
+    }, function() {
+      ok(true, "clearStats throw exception when start is less than 0.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Check if clearStats throw exception when manifestURL is invalid.
+    var options = {manifestURL: invalidManifestURL};
+    var promise = powerStatsMgr.clearStats(options);
+    promise.then(function() {
+      ok(false,
+         "clearStats does not throw exception when manifestURL is invalid.");
+    }, function() {
+      ok(true, "clearStats throw exception when manifestURL is invalid.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Test getAvailableComponents.
+    var promise = powerStatsMgr.getAvailableComponents();
+    promise.then(function(value) {
+      if (Array.isArray(value)) {
+        ok(true, "getAvailableComponents returns an array.");
+        testMethods();
+      } else {
+        ok(false, "getAvailableComponents does not return an array.");
+      }
+    }, function() {
+      ok(false, "Fail to execute getAvailableComponents.");
+    });
+  },
+
+  function() {
+    // Test getStats.
+    ok(true, "Get system stats when start and end are adapted to sampleRate.");
+
+    // Prepare start and end.
+    var offset = (new Date()).getTimezoneOffset() * 60 * 1000;
+    var end = Math.floor((Date.now() - offset) / sampleRate) * sampleRate + offset;
+    var start = end - sampleRate * 10;
+
+    // Launch request.
+    var promise = powerStatsMgr.getStats(null, start, end);
+    promise.then(function(value) {
+      // Check the object type.
+      if (value instanceof ResourceStats) {
+        ok(true, "Get a ResourceStats object.");
+      } else {
+        ok(false, "Fail to get a ResourceStats object.");
+        return;
+      }
+
+      // Check attributes of ResourceStats.
+      ok(value.type == "power", "type should be power.");
+      ok(value.component == null, "component should be null.");
+      ok(value.serviceType == null, "serviceType should be null.");
+      ok(value.manifestURL == null, "manifestURL should be null.");
+
+      // Check if the time range of ResourceStats is equal to the request.
+      ok(value.start == start, "start timestamp should be equal.");
+      ok(value.end == end, "end timestamp should be equal.");
+
+      // Check stats stored inside ResourceStats.
+      if ('getData' in value) {
+        checkData(value.getData(), start, end);
+      } else {
+        ok(false, "getData is not a method of ResourceStats.");
+        return;
+      }
+    }, function() {
+      ok(false, "Get power stats failed.");
+    });
+  },
+
+  function() {
+    // Test getStats when start and end are not adapted to sampleRate.
+    ok(true,
+       "Get system stats when start and end are not adapted to sampleRate.");
+
+    // Prepare start and end.
+    var end = Date.now();
+    var start = end - sampleRate * 10;
+
+    // Normalize start and end.
+    var offset = (new Date()).getTimezoneOffset() * 60 * 1000;
+    var normEnd = Math.floor((end - offset) / sampleRate)
+                    * sampleRate + offset;
+    var normStart = Math.floor((start - offset) / sampleRate)
+                      * sampleRate + offset;
+
+    // Launch request.
+    var promise = powerStatsMgr.getStats(null, start, end);
+    promise.then(function(value) {
+      // Check the object type.
+      if (value instanceof ResourceStats) {
+        ok(true, "Get a ResourceStats object.");
+      } else {
+        ok(false, "Fail to get a ResourceStats object.");
+        return;
+      }
+
+      // Check attributes of ResourceStats.
+      ok(value.type == "power", "type should be power.");
+      ok(value.component == null, "component should be null.");
+      ok(value.serviceType == null, "serviceType should be null.");
+      ok(value.manifestURL == null, "manifestURL should be null.");
+
+      // Check if time range of ResourceStats are normalized.
+      ok(value.start == normStart, "start timestamp should be normalized.");
+      ok(value.end == normEnd, "end timestamp should be normalized.");
+
+      // Check stats stored inside ResourceStats.
+      if ('getData' in value) {
+        checkData(value.getData(), normStart, normEnd);
+      } else {
+        ok(false, "getData is not a method of ResourceStats.");
+        return;
+      }
+    }, function() {
+      ok(false, "Get power stats failed.");
+    });
+  },
+
+  function() {
+    // Check if getStats throw exception when start is greater than end.
+    var end = Date.now();
+    var start = end + 1000;
+    var promise = powerStatsMgr.getStats(null, start, end);
+    promise.then(function() {
+      ok(false,
+         "getStats dose not throw exception when start is great than end.");
+    }, function() {
+      ok(true, "getStats throw exception when start is great than end.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Check if getStats throw exception when start is less than 0.
+    var end = Date.now();
+    var start = -1;
+    var promise = powerStatsMgr.getStats(null, start, end);
+    promise.then(function() {
+      ok(false,
+         "getStats dose not throw exception when start is less than 0.");
+    }, function() {
+      ok(true, "getStats throw exception when start is less than 0.");
+      testMethods();
+    });
+  },
+
+  function() {
+    // Check if getStats throw exception when manifestURL is invalid.
+    var options = {manifestURL: invalidManifestURL};
+    var promise = powerStatsMgr.getStats(options);
+    promise.then(function(value) {
+      ok(false,
+         "getStats does not throw exception when manifestURL is invalid.");
+    }, function() {
+      ok(true, "getStats throw exception when manifestURL is invalid.");
+      testMethods();
+    });
+  }
+];
+
+// Test WebIDL methods related stats operation.
+function testMethods() {
+  if (!testCases.length) {
+    ok(true, "Done.");
+    SpecialPowers.removePermission("resourcestats-manage", document);
+    SimpleTest.finish();
+    return;
+  }
+
+  var testCase = testCases.shift();
+  testCase();
+}
+
+function startTest() {
+  // Create an instance of ResourceStatsManager for power stats.
+  powerStatsMgr = new ResourceStatsManager("power");
+  ok(powerStatsMgr, "Create powerStatsMgr.");
+
+  // Test WebIDL attributes.
+  testAttributes();
+
+  // Test WebIDL methods related to stats operation.
+  testMethods();
+}
+
+SimpleTest.waitForExplicitFinish();
+
+// Enable permission and preference.
+SpecialPowers.addPermission("resourcestats-manage", true, document);
+SpecialPowers.pushPrefEnv({ 'set': [
+                            ["dom.resource_stats.enabled", true],
+                            ["dom.ignore_webidl_scope_checks", true]
+                          ]}, startTest);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/dom/resourcestats/tests/xpcshell/test_resourcestats_db.js b/dom/resourcestats/tests/xpcshell/test_resourcestats_db.js
new file mode 100644
index 000000000..c38fbf75f
--- /dev/null
+++ b/dom/resourcestats/tests/xpcshell/test_resourcestats_db.js
@@ -0,0 +1,985 @@
+/* Any: copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
+
+Cu.import("resource://gre/modules/ResourceStatsDB.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+const db = new ResourceStatsDB();
+
+// Components.
+const wifiComponent = "wifi:0";
+const mobileComponent = "mobile:1";
+const cpuComponent = "cpu:0";
+const gpsComponent = "gps:0";
+
+// List of available components.
+const networkComponents = [wifiComponent, mobileComponent];
+const powerComponents = [cpuComponent, gpsComponent];
+const offset = (new Date()).getTimezoneOffset() * 60 * 1000;
+
+// Clear store.
+function clearStore(store, callback) {
+  db._dbNewTxn(store, "readwrite", function(aTxn, aStore) {
+    aStore.openCursor().onsuccess = function (event) {
+      let cursor = event.target.result;
+      if (cursor){
+        cursor.delete();
+        cursor.continue();
+      }
+    };
+  }, callback);
+}
+
+// Clear all stores to avoid starting tests with unknown state.
+add_test(function prepareDatabase() {
+  clearStore('power_stats_store', function() {
+    clearStore('network_stats_store', function() {
+      clearStore('alarm_store', function() {
+        run_next_test();
+      });
+    });
+  });
+});
+
+// Dump data saved in a store.
+function dumpStore(store, callback) {
+  db._dbNewTxn(store, "readonly", function(aTxn, aStore) {
+    aStore.mozGetAll().onsuccess = function onsuccess(event) {
+      aTxn.result = event.target.result;
+    };
+  }, callback);
+}
+
+// Check sampleRate is unchangeable.
+add_test(function test_sampleRate() {
+  var sampleRate = db.sampleRate;
+  do_check_true(sampleRate > 0);
+
+  db.sampleRate = 0;
+  sampleRate = db.sampleRate;
+  do_check_true(sampleRate > 0);
+
+  run_next_test();
+});
+
+// Test maxStorageAge is unchangeable.
+add_test(function test_maxStorageAge() {
+  var maxStorageAge = db.maxStorageAge;
+  do_check_true(maxStorageAge > 0);
+
+  db.maxStorageAge = 0;
+  maxStorageAge = db.maxStorageAge;
+  do_check_true(maxStorageAge > 0);
+
+  run_next_test();
+});
+
+// Normalize timestamp to sampleRate precision.
+function normalizeTime(aTimeStamp) {
+  var sampleRate = db.sampleRate;
+
+  return Math.floor((aTimeStamp - offset) / sampleRate) * sampleRate;
+}
+
+// Generte record as input for saveNetworkStats() as well as the expected
+// result when calling getStats().
+function generateNetworkRecord(aAppId, aServiceType, aComponents) {
+  var result = [];
+  var componentStats = {};
+  var receivedBytes;
+  var sentBytes;
+  var totalReceivedBytes = 0;
+  var totalSentBytes = 0;
+
+  aComponents.forEach(function(comp) {
+    // Step 1: generate random value for receivedBytes and sentBytes.
+    receivedBytes = Math.floor(Math.random() * 1000);
+    sentBytes = Math.floor(Math.random() * 1000);
+    totalReceivedBytes += receivedBytes;
+    totalSentBytes += sentBytes;
+
+    // Step 2: add stats to record.componentStats.
+    componentStats[comp] = {
+      receivedBytes: receivedBytes,
+      sentBytes: sentBytes
+    };
+
+    // Step 3: generate expected results.
+    result.push({
+      appId: aAppId,
+      serviceType: aServiceType,
+      component: comp,
+      receivedBytes: receivedBytes,
+      sentBytes: sentBytes
+    });
+  });
+
+  // Step 4: generate expected total stats.
+  result.push({
+    appId: aAppId,
+    serviceType: aServiceType,
+    component: "",
+    receivedBytes: totalReceivedBytes,
+    sentBytes: totalSentBytes
+  });
+
+  // Step 5: get record.
+  var record = { appId: aAppId,
+                 serviceType: aServiceType,
+                 componentStats: componentStats };
+
+  return { record: record, result: result };
+}
+
+// Generte record as input for savePowerStats() as well as the expected
+// result when calling getStats().
+function generatePowerRecord(aAppId, aServiceType, aComponents) {
+  var result = [];
+  var componentStats = {};
+  var consumedPower;
+  var totalConsumedPower = 0;
+
+  aComponents.forEach(function(comp) {
+    // Step 1: generate random value for consumedPower.
+    consumedPower = Math.floor(Math.random() * 1000);
+    totalConsumedPower += consumedPower;
+
+    // Step 2: add stats to record.componentStats.
+    componentStats[comp] = consumedPower;
+
+    // Step 3: generate expected results.
+    result.push({
+      appId: aAppId,
+      serviceType: aServiceType,
+      component: comp,
+      consumedPower: consumedPower
+    });
+  });
+
+  // Step 4: generate expected total stats.
+  result.push({
+    appId: aAppId,
+    serviceType: aServiceType,
+    component: "",
+    consumedPower: totalConsumedPower
+  });
+
+  // Step 5: get record.
+  var record = { appId: aAppId,
+                 serviceType: aServiceType,
+                 componentStats: componentStats };
+
+  return { record: record, result: result };
+}
+
+// Compare stats saved in network store with expected results.
+function checkNetworkStatsStore(aExpectedResult, aDumpResult, aTimestamp) {
+  // Step 1: a quick check for the length of arrays first.
+  do_check_eq(aExpectedResult.length, aDumpResult.length);
+
+  // Step 2: create a map array for search by receivedBytes.
+  var mapArray = aExpectedResult.map(function(e) {return e.receivedBytes;});
+
+  // Step 3: compare each element to make sure both array are equal.
+  var index;
+  var target;
+
+  aDumpResult.forEach(function(stats) {
+    index = 0;
+    // Find the first equal receivedBytes since index.
+    while ((index = mapArray.indexOf(stats.receivedBytes, index)) > -1) {
+      // Compare all attributes.
+      target = aExpectedResult[index];
+      if (target.appId != stats.appId ||
+          target.serviceType != stats.serviceType ||
+          target.component != stats.component ||
+          target.sentBytes != stats.sentBytes ||
+          aTimestamp != stats.timestamp) {
+        index += 1;
+        continue;
+      } else {
+        // If found, remove that element from aExpectedResult and mapArray.
+        aExpectedResult.splice(index, 1);
+        mapArray.splice(index, 1);
+        break;
+      }
+    }
+    do_check_neq(index, -1);
+  });
+  run_next_test();
+}
+
+// Compare stats saved in power store with expected results.
+function checkPowerStatsStore(aExpectedResult, aDumpResult, aTimestamp) {
+  // Step 1: a quick check for the length of arrays first.
+  do_check_eq(aExpectedResult.length, aDumpResult.length);
+
+  // Step 2: create a map array for search by consumedPower.
+  var mapArray = aExpectedResult.map(function(e) {return e.consumedPower;});
+
+  // Step 3: compare each element to make sure both array are equal.
+  var index;
+  var target;
+
+  aDumpResult.forEach(function(stats) {
+    index = 0;
+    // Find the first equal consumedPower since index.
+    while ((index = mapArray.indexOf(stats.consumedPower, index)) > -1) {
+      // Compare all attributes.
+      target = aExpectedResult[index];
+      if (target.appId != stats.appId ||
+          target.serviceType != stats.serviceType ||
+          target.component != stats.component ||
+          aTimestamp != stats.timestamp) {
+        index += 1;
+        continue;
+      } else {
+        // If found, remove that element from aExpectedResult and mapArray.
+        aExpectedResult.splice(index, 1);
+        mapArray.splice(index, 1);
+        break;
+      }
+    }
+    do_check_neq(index, -1);
+  });
+  run_next_test();
+}
+
+// Prepare network store for testing.
+function prepareNetworkStatsStore(recordArray, timestamp, callback) {
+  // Step 1: clear store.
+  clearStore("network_stats_store", function() {
+    // Step 2: save record to store.
+    db.saveNetworkStats(recordArray, timestamp, callback);
+  });
+}
+
+// Prepare power store for testing.
+function preparePowerStatsStore(recordArray, timestamp, callback) {
+  // Step 1: clear store.
+  clearStore("power_stats_store", function() {
+    // Step 2: save record to store.
+    db.savePowerStats(recordArray, timestamp, callback);
+  });
+}
+
+// Test saveNetworkStats.
+add_test(function test_saveNetworkStats() {
+  var appId = 1;
+  var serviceType = "";
+
+  // Step 1: generate data saved to store.
+  var { record: record, result: expectedResult } =
+    generateNetworkRecord(appId, serviceType, networkComponents);
+  var recordArray = [record];
+  var timestamp = Date.now();
+
+  // Step 2: save recordArray to network store.
+  prepareNetworkStatsStore(recordArray, timestamp, function(error, callback) {
+    // Step 3: check if the function call succeed.
+    do_check_eq(error, null);
+    // Step 4: dump store for comparison.
+    dumpStore("network_stats_store", function(error, result) {
+      do_check_eq(error, null);
+      checkNetworkStatsStore(expectedResult, result, normalizeTime(timestamp));
+    });
+  });
+});
+
+// Test savePowerStats.
+add_test(function test_savePowerStats() {
+  var appId = 1;
+  var serviceType = "";
+
+  // Step 1: generate data saved to store.
+  var { record: record, result: expectedResult } =
+    generatePowerRecord(appId, serviceType, powerComponents);
+  var recordArray = [record];
+  var timestamp = Date.now();
+
+  // Step 2: save recordArray to power store.
+  preparePowerStatsStore(recordArray, timestamp, function(error, callback) {
+    // Step 3: check if the function call succeed.
+    do_check_eq(error, null);
+    // Step 4: dump store for comparison.
+    dumpStore("power_stats_store", function(error, result) {
+      do_check_eq(error, null);
+      checkPowerStatsStore(expectedResult, result, normalizeTime(timestamp));
+    });
+  });
+});
+
+// Test getting network stats via getStats.
+add_test(function test_getNetworkStats() {
+  var appId = 0;
+  var manifestURL = "";
+  var serviceType = "";
+  var component = "";
+
+  // Step 1: generate data saved to store.
+  var { record: record, result: result } =
+    generateNetworkRecord(appId, serviceType, networkComponents);
+  var recordArray = [record];
+  var expectedStats = result[result.length - 1]; // Check total stats only.
+  var timestamp = Date.now();
+  var end = normalizeTime(timestamp) + offset;
+  var start = end;
+
+  // Step 2: save record and prepare network store.
+  prepareNetworkStatsStore(recordArray, timestamp, function(error, callback) {
+    // Step 3: get network stats.
+    db.getStats("network", manifestURL, serviceType, component, start, end,
+      function(error, result) {
+      do_check_eq(error, null);
+
+      // Step 4: verify result.
+      do_check_eq(result.type, "network");
+      do_check_eq(result.manifestURL, manifestURL);
+      do_check_eq(result.serviceType, serviceType);
+      do_check_eq(result.component, component);
+      do_check_eq(result.start, start);
+      do_check_eq(result.end, end);
+      do_check_eq(result.sampleRate, db.sampleRate);
+      do_check_true(Array.isArray(result.statsData));
+      do_check_eq(result.statsData.length, 1);
+      var stats = result.statsData[0];
+      do_check_eq(stats.receivedBytes, expectedStats.receivedBytes);
+      do_check_eq(stats.sentBytes, expectedStats.sentBytes);
+
+      run_next_test(); // If success, run next test.
+    });
+  });
+});
+
+// Test getting power stats via getStats.
+add_test(function test_getPowerStats() {
+  var appId = 0;
+  var manifestURL = "";
+  var serviceType = "";
+  var component = "";
+
+  // Step 1: generate data saved to store.
+  var { record: record, result: result } =
+    generatePowerRecord(appId, serviceType, powerComponents);
+  var recordArray = [record];
+  var expectedStats = result[result.length - 1]; // Check total stats only.
+  var timestamp = Date.now();
+  var end = normalizeTime(timestamp) + offset;
+  var start = end;
+
+  // Step 2: save record and prepare power store.
+  preparePowerStatsStore(recordArray, timestamp, function(error, callback) {
+    // Step 3: get power stats.
+    db.getStats("power", manifestURL, serviceType, component, start, end,
+      function(error, result) {
+      do_check_eq(error, null);
+
+      // Step 4: verify result
+      do_check_eq(result.type, "power");
+      do_check_eq(result.manifestURL, manifestURL);
+      do_check_eq(result.serviceType, serviceType);
+      do_check_eq(result.component, component);
+      do_check_eq(result.start, start);
+      do_check_eq(result.end, end);
+      do_check_eq(result.sampleRate, db.sampleRate);
+      do_check_true(Array.isArray(result.statsData));
+      do_check_eq(result.statsData.length, 1);
+      var stats = result.statsData[0];
+      do_check_eq(stats.consumedPower, expectedStats.consumedPower);
+
+      run_next_test(); // If success, run next test.
+    });
+  });
+});
+
+// Test deleting network stats via clearStats.
+add_test(function test_clearNetworkStats() {
+  var appId = 0;
+  var manifestURL = "";
+  var serviceType = "";
+  var component = "";
+
+  // Step 1: genrate data saved to network store.
+  var { record: record, result: result } =
+    generateNetworkRecord(appId, serviceType, networkComponents);
+  var recordArray = [record];
+  var timestamp = Date.now();
+  var end = normalizeTime(timestamp) + offset;
+  var start = end;
+
+  // Step 2: save record and prepare network store.
+  prepareNetworkStatsStore(recordArray, timestamp, function(error, callback) {
+    // Step 3: clear network stats.
+    db.clearStats("network", appId, serviceType, component, start, end,
+      function(error, result) {
+      do_check_eq(error, null);
+
+      // Step 4: check if the stats is deleted.
+      db.getStats("network", manifestURL, serviceType, component, start, end,
+        function(error, result) {
+        do_check_eq(result.statsData.length, 0);
+        run_next_test();
+      });
+    });
+  });
+});
+
+// Test deleting power stats via clearStats.
+add_test(function test_clearPowerStats() {
+  var appId = 0;
+  var manifestURL = "";
+  var serviceType = "";
+  var component = "";
+
+  // Step 1: genrate data saved to power store.
+  var { record: record, result: result } =
+    generatePowerRecord(appId, serviceType, powerComponents);
+  var recordArray = [record];
+  var timestamp = Date.now();
+  var end = normalizeTime(timestamp) + offset;
+  var start = end;
+
+  // Step 2: save record and prepare power store.
+  preparePowerStatsStore(recordArray, timestamp, function(error, callback) {
+    // Step 3: clear power stats.
+    db.clearStats("power", appId, serviceType, component, start, end,
+      function(error, result) {
+      do_check_eq(error, null);
+
+      // Step 4: check if the stats is deleted.
+      db.getStats("power", manifestURL, serviceType, component, start, end,
+        function(error, result) {
+        do_check_eq(result.statsData.length, 0);
+        run_next_test();
+      });
+    });
+  });
+});
+
+// Test clearing all network stats.
+add_test(function test_clearAllNetworkStats() {
+  db.clearAllStats("network", function(error, result) {
+    do_check_eq(error, null);
+    run_next_test();
+  });
+});
+
+// Test clearing all power stats.
+add_test(function test_clearAllPowerStats() {
+  db.clearAllStats("power", function(error, result) {
+    do_check_eq(error, null);
+    run_next_test();
+  });
+});
+
+// Test getting network components.
+add_test(function test_getNetworkComponents() {
+  var appId = 0;
+  var serviceType = "";
+
+  // Step 1: generate data saved to store.
+  var { record: record, result: expectedResult } =
+    generateNetworkRecord(appId, serviceType, networkComponents);
+  var recordArray = [record];
+  var timestamp = Date.now();
+
+  // Step 2: save recordArray to network store.
+  prepareNetworkStatsStore(recordArray, timestamp, function(error, callback) {
+    // Step 3: call getComponents.
+    db.getComponents("network", function(error, result) {
+      do_check_eq(error, null);
+      do_check_true(Array.isArray(result));
+      do_check_eq(result.length, networkComponents.length);
+
+      // Check each element in result array is an element of networkComponents.
+      result.forEach(function(component) {
+        do_check_true(networkComponents.indexOf(component) > -1);
+      });
+
+      run_next_test(); // If success, run next test.
+    });
+  });
+});
+
+// Test getting power components.
+add_test(function test_getPowerComponents() {
+  var appId = 0;
+  var serviceType = "";
+
+  // Step 1: generate data saved to store.
+  var { record: record, result: expectedResult } =
+    generatePowerRecord(appId, serviceType, powerComponents);
+  var recordArray = [record];
+  var timestamp = Date.now();
+
+  // Step 2: save recordArray to power store.
+  preparePowerStatsStore(recordArray, timestamp, function(error, callback) {
+    // Step 3: call getComponents.
+    db.getComponents("power", function(error, result) {
+      do_check_eq(error, null);
+      do_check_true(Array.isArray(result));
+      do_check_eq(result.length, powerComponents.length);
+
+      // Check each element in result array is an element of powerComponents.
+      result.forEach(function(component) {
+        do_check_true(powerComponents.indexOf(component) > -1);
+      });
+
+      run_next_test(); // If success, run next test.
+    });
+  });
+});
+
+// Generate alarm object for addAlarm().
+function generateAlarmObject(aType, aManifestURL, aServiceType, aComponent) {
+  let alarm = {
+    type: aType,
+    component: aComponent,
+    serviceType: aServiceType,
+    manifestURL: aManifestURL,
+    threshold: Math.floor(Math.random() * 1000),
+    startTime: Math.floor(Math.random() * 1000),
+    data: null
+  };
+
+  return alarm;
+}
+
+// Test adding a network alarm.
+add_test(function test_addNetowrkAlarm() {
+  var manifestURL = "";
+  var serviceType = "";
+
+  // Step 1: generate a network alarm.
+  var alarm =
+    generateAlarmObject("network", manifestURL, serviceType, wifiComponent);
+
+  // Step 2: clear store.
+  clearStore("alarm_store", function() {
+    // Step 3: save the alarm to store.
+    db.addAlarm(alarm, function(error, result) {
+      // Step 4: check if the function call succeed.
+      do_check_eq(error, null);
+      do_check_true(result > -1);
+      let alarmId = result;
+
+      // Step 5: dump store for comparison.
+      dumpStore("alarm_store", function(error, result) {
+        do_check_eq(error, null);
+        do_check_true(Array.isArray(result));
+        do_check_true(result.length == 1);
+        do_check_eq(result[0].type, alarm.type);
+        do_check_eq(result[0].manifestURL, alarm.manifestURL);
+        do_check_eq(result[0].serviceType, alarm.serviceType);
+        do_check_eq(result[0].component, alarm.component);
+        do_check_eq(result[0].threshold, alarm.threshold);
+        do_check_eq(result[0].startTime, alarm.startTime);
+        do_check_eq(result[0].data, alarm.data);
+        do_check_eq(result[0].alarmId, alarmId);
+
+        run_next_test(); // If success, run next test.
+      });
+    });
+  });
+});
+
+// Test adding a power alarm.
+add_test(function test_addPowerAlarm() {
+  var manifestURL = "";
+  var serviceType = "";
+
+  // Step 1: generate a power alarm.
+  var alarm =
+    generateAlarmObject("power", manifestURL, serviceType, cpuComponent);
+
+  // Step 2: clear store.
+  clearStore("alarm_store", function() {
+    // Step 3: save the alarm to store.
+    db.addAlarm(alarm, function(error, result) {
+      // Step 4: check if the function call succeed.
+      do_check_eq(error, null);
+      do_check_true(result > -1);
+      let alarmId = result;
+
+      // Step 5: dump store for comparison.
+      dumpStore("alarm_store", function(error, result) {
+        do_check_eq(error, null);
+        do_check_true(Array.isArray(result));
+        do_check_true(result.length == 1);
+        do_check_eq(result[0].type, alarm.type);
+        do_check_eq(result[0].manifestURL, alarm.manifestURL);
+        do_check_eq(result[0].serviceType, alarm.serviceType);
+        do_check_eq(result[0].component, alarm.component);
+        do_check_eq(result[0].threshold, alarm.threshold);
+        do_check_eq(result[0].startTime, alarm.startTime);
+        do_check_eq(result[0].data, alarm.data);
+        do_check_eq(result[0].alarmId, alarmId);
+
+        run_next_test(); // If success, run next test.
+      });
+    });
+  });
+});
+
+// Add multiple alarms to store and record the obtained alarmId in each
+// alarm object.
+function addAlarmsToStore(alarms, index, callback) {
+  var alarm = alarms[index++];
+  if (index < alarms.length) {
+    db.addAlarm(alarm, function(error, result) {
+      alarm.alarmId = result;
+      addAlarmsToStore(alarms, index, callback);
+    });
+  } else {
+    db.addAlarm(alarm, function(error, result) {
+      alarm.alarmId = result;
+      callback(error, result);
+    });
+  }
+}
+
+// Prepare alarm store for testging.
+function prepareAlarmStore(alarms, callback) {
+  // Step 1: clear srore.
+  clearStore("alarm_store", function() {
+    // Step 2: save alarms to store one by one.
+    addAlarmsToStore(alarms, 0, callback);
+  });
+}
+
+// Compare alrams returned by getAlarms().
+function compareAlarms(aExpectedResult, aResult) {
+  // Step 1: a quick check for the length of arrays first.
+  do_check_eq(aExpectedResult.length, aResult.length);
+
+  // Step 2: create a map array for search by threshold.
+  var mapArray = aExpectedResult.map(function(e) {return e.threshold;});
+
+  // Step 3: compare each element to make sure both array are equal.
+  var index;
+  var target;
+
+  aResult.forEach(function(alarm) {
+    index = 0;
+    // Find the first equal receivedBytes since index.
+    while ((index = mapArray.indexOf(alarm.threshold, index)) > -1) {
+      // Compare all attributes.
+      target = aExpectedResult[index];
+      if (target.alarmId != alarm.alarmId ||
+          target.type != alarm.type ||
+          target.manifestURL != alarm.manifestURL ||
+          target.serviceType != alarm.serviceType ||
+          target.component != alarm.component ||
+          target.data != alarm.data) {
+        index += 1;
+        continue;
+      } else {
+        // If found, remove that element from aExpectedResult and mapArray.
+        aExpectedResult.splice(index, 1);
+        mapArray.splice(index, 1);
+        break;
+      }
+    }
+    do_check_neq(index, -1);
+  });
+  run_next_test();
+}
+
+// Test getting designate network alarms from store.
+add_test(function test_getNetworkAlarms() {
+  var manifestURL = "";
+  var serviceType = "";
+  var alarms = [];
+
+  // Step 1: generate two network alarms using same parameters.
+  alarms.push(generateAlarmObject("network", manifestURL, serviceType,
+                                  wifiComponent));
+  alarms.push(generateAlarmObject("network", manifestURL, serviceType,
+                                  wifiComponent));
+
+  // Step 2: generate another network alarm using different parameters.
+  alarms.push(generateAlarmObject("network", manifestURL, serviceType,
+                                  mobileComponent));
+
+  // Step 3: clear alarm store and save new alarms to store.
+  prepareAlarmStore(alarms, function(error, result) {
+    // Step 4: call getAlarms.
+    let options = {
+      manifestURL: manifestURL,
+      serviceType: serviceType,
+      component: wifiComponent
+    };
+    db.getAlarms("network", options, function(error, result) {
+      // Step 5: check if the function call succeed.
+      do_check_eq(error, null);
+
+      // Step 6: check results.
+      // The last element in alarms array is not our expected result,
+      // so pop that out first.
+      alarms.pop();
+      compareAlarms(alarms, result);
+    });
+  });
+});
+
+// Test getting designate power alarms from store.
+add_test(function test_getPowerAlarms() {
+  var manifestURL = "";
+  var serviceType = "";
+  var alarms = [];
+
+  // Step 1: generate two power alarms using same parameters.
+  alarms.push(generateAlarmObject("power", manifestURL, serviceType,
+                                  cpuComponent));
+  alarms.push(generateAlarmObject("power", manifestURL, serviceType,
+                                  cpuComponent));
+
+  // Step 2: generate another power alarm using different parameters.
+  alarms.push(generateAlarmObject("power", manifestURL, serviceType,
+                                  gpsComponent));
+
+  // Step 3: clear alarm store and save new alarms to store.
+  prepareAlarmStore(alarms, function(error, result) {
+    // Step 4: call getAlarms.
+    let options = {
+      manifestURL: manifestURL,
+      serviceType: serviceType,
+      component: cpuComponent
+    };
+    db.getAlarms("power", options, function(error, result) {
+      // Step 5: check if the function call succeed.
+      do_check_eq(error, null);
+
+      // Step 6: check results.
+      // The last element in alarms array is not our expected result,
+      // so pop that out first.
+      alarms.pop();
+      compareAlarms(alarms, result);
+    });
+  });
+});
+
+// Test getting all network alarms from store.
+add_test(function test_getAllNetworkAlarms() {
+  var manifestURL = "";
+  var serviceType = "";
+  var alarms = [];
+
+  // Step 1: generate two network alarms.
+  alarms.push(generateAlarmObject("network", manifestURL, serviceType,
+                                  wifiComponent));
+  alarms.push(generateAlarmObject("network", manifestURL, serviceType,
+                                  mobileComponent));
+
+  // Step 2: generate another power alarm.
+  alarms.push(generateAlarmObject("power", manifestURL, serviceType,
+                                  cpuComponent));
+
+  // Step 3: clear alarm store and save new alarms to store.
+  prepareAlarmStore(alarms, function(error, result) {
+    // Step 4: call getAlarms.
+    let options = null;
+    db.getAlarms("network", options, function(error, result) {
+      // Step 5: check if the function call succeed.
+      do_check_eq(error, null);
+
+      // Step 6: check results.
+      // The last element in alarms array is not our expected result,
+      // so pop that out first.
+      alarms.pop();
+      compareAlarms(alarms, result);
+    });
+  });
+});
+
+// Test getting all power alarms from store.
+add_test(function test_getAllPowerAlarms() {
+  var manifestURL = "";
+  var serviceType = "";
+  var alarms = [];
+
+  // Step 1: generate two power alarms.
+  alarms.push(generateAlarmObject("power", manifestURL, serviceType,
+                                  cpuComponent));
+  alarms.push(generateAlarmObject("power", manifestURL, serviceType,
+                                  gpsComponent));
+
+  // Step 2: generate another network alarm.
+  alarms.push(generateAlarmObject("network", manifestURL, serviceType,
+                                  wifiComponent));
+
+  // Step 3: clear alarm store and save new alarms to store.
+  prepareAlarmStore(alarms, function(error, result) {
+    // Step 4: call getAlarms.
+    let options = null;
+    db.getAlarms("power", options, function(error, result) {
+      // Step 5: check if the function call succeed.
+      do_check_eq(error, null);
+
+      // Step 6: check results.
+      // The last element in alarms array is not our expected result,
+      // so pop that out first.
+      alarms.pop();
+      compareAlarms(alarms, result);
+    });
+  });
+});
+
+// Test removing designate network alarm from store.
+add_test(function test_removeNetworkAlarm() {
+  var manifestURL = "";
+  var serviceType = "";
+  var alarms = [];
+
+  // Step 1: generate one network alarm.
+  alarms.push(generateAlarmObject("network", manifestURL, serviceType,
+                                  wifiComponent));
+
+  // Step 2: clear alarm store and save new alarms to store.
+  prepareAlarmStore(alarms, function(error, result) {
+    var alarmId = result;
+    // Step 3: remove the alarm.
+    db.removeAlarm("network", alarmId, function(error, result) {
+      // Step 4: check if the function call succeed.
+      do_check_eq(result, true);
+
+      // Step 5: dump store to check if the alarm is removed.
+      dumpStore("alarm_store", function(error, result) {
+        do_check_eq(error, null);
+        do_check_true(Array.isArray(result));
+        do_check_true(result.length === 0);
+
+        run_next_test(); // If success, run next test.
+      });
+    });
+  });
+});
+
+// Test removing designate power alarm from store.
+add_test(function test_removePowerAlarm() {
+  var manifestURL = "";
+  var serviceType = "";
+  var alarms = [];
+
+  // Step 1: generate one power alarm.
+  alarms.push(generateAlarmObject("power", manifestURL, serviceType,
+                                  cpuComponent));
+
+  // Step 2: clear alarm store and save new alarms to store.
+  prepareAlarmStore(alarms, function(error, result) {
+    var alarmId = result;
+    // Step 3: remove the alarm.
+    db.removeAlarm("power", alarmId, function(error, result) {
+      // Step 4: check if the function call succeed.
+      do_check_eq(result, true);
+
+      // Step 5: dump store to check if the alarm is removed.
+      dumpStore("alarm_store", function(error, result) {
+        do_check_eq(error, null);
+        do_check_true(Array.isArray(result));
+        do_check_true(result.length === 0);
+
+        run_next_test(); // If success, run next test.
+      });
+    });
+  });
+});
+
+// Test removing designate network alarm from store.
+add_test(function test_removeAllNetworkAlarms() {
+  var manifestURL = "";
+  var serviceType = "";
+  var alarms = [];
+
+  // Step 1: generate two network alarms.
+  alarms.push(generateAlarmObject("network", manifestURL, serviceType,
+                                  wifiComponent));
+  alarms.push(generateAlarmObject("network", manifestURL, serviceType,
+                                  mobileComponent));
+
+  // Step 2: generate another power alarm.
+  alarms.push(generateAlarmObject("power", manifestURL, serviceType,
+                                  cpuComponent));
+
+  // Step 3: clear alarm store and save new alarms to store.
+  prepareAlarmStore(alarms, function(error, result) {
+    // Step 4: remove all network alarms.
+    db.removeAllAlarms("network", function(error, result) {
+      // Step 5: check if the function call succeed.
+      do_check_eq(error, null);
+
+      // Step 6: dump store for comparison.
+      // Because the power alarm should not be removed, so it would be the
+      // only result returned by dumpStore.
+      var alarm = alarms.pop(); // The expected result.
+      dumpStore("alarm_store", function(error, result) {
+        do_check_eq(error, null);
+        do_check_true(Array.isArray(result));
+        do_check_true(result.length == 1);
+        do_check_eq(result[0].type, alarm.type);
+        do_check_eq(result[0].manifestURL, alarm.manifestURL);
+        do_check_eq(result[0].serviceType, alarm.serviceType);
+        do_check_eq(result[0].component, alarm.component);
+        do_check_eq(result[0].threshold, alarm.threshold);
+        do_check_eq(result[0].startTime, alarm.startTime);
+        do_check_eq(result[0].data, alarm.data);
+        do_check_eq(result[0].alarmId, alarm.alarmId);
+
+        run_next_test(); // If success, run next test.
+      });
+    });
+  });
+});
+
+// Test removing designate power alarm from store.
+add_test(function test_removeAllPowerAlarms() {
+  var manifestURL = "";
+  var serviceType = "";
+  var alarms = [];
+
+  // Step 1: generate two power alarms.
+  alarms.push(generateAlarmObject("power", manifestURL, serviceType,
+                                  cpuComponent));
+  alarms.push(generateAlarmObject("power", manifestURL, serviceType,
+                                  gpsComponent));
+
+  // Step 2: generate another network alarm.
+  alarms.push(generateAlarmObject("network", manifestURL, serviceType,
+                                  wifiComponent));
+
+  // Step 3: clear alarm store and save new alarms to store.
+  prepareAlarmStore(alarms, function(error, result) {
+    // Step 4: remove all power alarms.
+    db.removeAllAlarms("power", function(error, result) {
+      // Step 5: check if the function call succeed.
+      do_check_eq(error, null);
+
+      // Step 6: dump store for comparison.
+      // Because the network alarm should not be removed, so it would be the
+      // only result returned by dumpStore.
+      var alarm = alarms.pop(); // The expected result.
+      dumpStore("alarm_store", function(error, result) {
+        do_check_eq(error, null);
+        do_check_true(Array.isArray(result));
+        do_check_true(result.length == 1);
+        do_check_eq(result[0].type, alarm.type);
+        do_check_eq(result[0].manifestURL, alarm.manifestURL);
+        do_check_eq(result[0].serviceType, alarm.serviceType);
+        do_check_eq(result[0].component, alarm.component);
+        do_check_eq(result[0].threshold, alarm.threshold);
+        do_check_eq(result[0].startTime, alarm.startTime);
+        do_check_eq(result[0].data, alarm.data);
+        do_check_eq(result[0].alarmId, alarm.alarmId);
+
+        run_next_test(); // If success, run next test.
+      });
+    });
+  });
+});
+
+function run_test() {
+  do_get_profile();
+  run_next_test();
+}
diff --git a/dom/resourcestats/tests/xpcshell/xpcshell.ini b/dom/resourcestats/tests/xpcshell/xpcshell.ini
new file mode 100644
index 000000000..c1848a540
--- /dev/null
+++ b/dom/resourcestats/tests/xpcshell/xpcshell.ini
@@ -0,0 +1,5 @@
+[DEFAULT]
+head =
+tail =
+
+[test_resourcestats_db.js]