1 files changed, 63 insertions, 0 deletions
diff --git a/toolkit/devtools/performance/test/browser_perf-compatibility-03.js b/toolkit/devtools/performance/test/browser_perf-compatibility-03.js
new file mode 100644
index 000000000..42b0fb251
--- /dev/null
+++ b/toolkit/devtools/performance/test/browser_perf-compatibility-03.js
@@ -0,0 +1,63 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Test basic functionality of PerformanceFront with only mock memory.
+ */
+
+let WAIT_TIME = 100;
+
+function spawnTest () {
+  let { target, front } = yield initBackend(SIMPLE_URL, {
+    TEST_MOCK_MEMORY_ACTOR: true
+  });
+  Services.prefs.setBoolPref(MEMORY_PREF, true);
+
+  let { memory, timeline } = front.getMocksInUse();
+  ok(memory, "memory should be mocked.");
+  ok(!timeline, "timeline should not be mocked.");
+
+  let {
+    profilerStartTime,
+    timelineStartTime,
+    memoryStartTime
+  } = yield front.startRecording({
+    withTicks: true,
+    withMemory: true,
+    withAllocations: true
+  });
+
+  ok(typeof profilerStartTime === "number",
+    "The front.startRecording() emits a profiler start time.");
+  ok(typeof timelineStartTime === "number",
+    "The front.startRecording() emits a timeline start time.");
+  ok(typeof memoryStartTime === "number",
+    "The front.startRecording() emits a memory start time.");
+
+  yield busyWait(WAIT_TIME);
+
+  let {
+    profilerEndTime,
+    timelineEndTime,
+    memoryEndTime
+  } = yield front.stopRecording({
+    withAllocations: true
+  });
+
+  ok(typeof profilerEndTime === "number",
+    "The front.stopRecording() emits a profiler end time.");
+  ok(typeof timelineEndTime === "number",
+    "The front.stopRecording() emits a timeline end time.");
+  ok(typeof memoryEndTime === "number",
+    "The front.stopRecording() emits a memory end time.");
+
+  ok(profilerEndTime > profilerStartTime,
+    "The profilerEndTime is after profilerStartTime.");
+  ok(timelineEndTime > timelineStartTime,
+    "The timelineEndTime is after timelineStartTime.");
+  is(memoryEndTime, memoryStartTime,
+    "The memoryEndTime is the same as memoryStartTime.");
+
+  yield removeTab(target.tab);
+  finish();
+}