1 files changed, 74 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_dns_offline.js b/netwerk/test/unit/test_dns_offline.js
new file mode 100644
index 0000000000..87a9ad8b1e
--- /dev/null
+++ b/netwerk/test/unit/test_dns_offline.js
@@ -0,0 +1,74 @@
+var dns = Cc["@mozilla.org/network/dns-service;1"].getService(Ci.nsIDNSService);
+var ioService = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService);
+var prefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranch);
+var threadManager = Cc["@mozilla.org/thread-manager;1"].getService(Ci.nsIThreadManager);
+var mainThread = threadManager.currentThread;
+
+var listener1 = {
+  onLookupComplete: function(inRequest, inRecord, inStatus) {
+    do_check_eq(inStatus, Cr.NS_ERROR_OFFLINE);
+    test2();
+    do_test_finished();
+  }
+};
+
+var listener2 = {
+  onLookupComplete: function(inRequest, inRecord, inStatus) {
+    do_check_eq(inStatus, Cr.NS_OK);
+    var answer = inRecord.getNextAddrAsString();
+    do_check_true(answer == "127.0.0.1" || answer == "::1");
+    test3();
+    do_test_finished();
+  }
+};
+
+var listener3 = {
+  onLookupComplete: function(inRequest, inRecord, inStatus) {
+    do_check_eq(inStatus, Cr.NS_OK);
+    var answer = inRecord.getNextAddrAsString();
+    do_check_true(answer == "127.0.0.1" || answer == "::1");
+    cleanup();
+    do_test_finished();
+  }
+};
+
+function run_test() {
+  do_test_pending();
+  prefs.setBoolPref("network.dns.offline-localhost", false);
+  ioService.offline = true;
+  try {
+    dns.asyncResolve("localhost", 0, listener1, mainThread);
+  } catch (e) {
+      do_check_eq(e.result, Cr.NS_ERROR_OFFLINE);
+      test2();
+      do_test_finished();
+  }
+}
+
+function test2() {
+  do_test_pending();
+  prefs.setBoolPref("network.dns.offline-localhost", true);
+  ioService.offline = false;
+  ioService.offline = true;
+  // we need to let the main thread run and apply the changes
+  do_timeout(0, test2Continued);
+}
+
+function test2Continued() {
+  dns.asyncResolve("localhost", 0, listener2, mainThread);
+}
+
+function test3() {
+  do_test_pending();
+  ioService.offline = false;
+  // we need to let the main thread run and apply the changes
+  do_timeout(0, test3Continued);
+}
+
+function test3Continued() {
+  dns.asyncResolve("localhost", 0, listener3, mainThread);
+}
+
+function cleanup() {
+  prefs.clearUserPref("network.dns.offline-localhost");
+}