1 files changed, 45 insertions, 0 deletions
diff --git a/devtools/client/canvasdebugger/test/browser_profiling-canvas.js b/devtools/client/canvasdebugger/test/browser_profiling-canvas.js
new file mode 100644
index 000000000..ede8a4dbf
--- /dev/null
+++ b/devtools/client/canvasdebugger/test/browser_profiling-canvas.js
@@ -0,0 +1,45 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests if functions inside a single animation frame are recorded and stored
+ * for a canvas context profiling.
+ */
+
+function* ifTestingSupported() {
+  let currentTime = window.performance.now();
+  let { target, front } = yield initCanvasDebuggerBackend(SIMPLE_CANVAS_URL);
+
+  let navigated = once(target, "navigate");
+
+  yield front.setup({ reload: true });
+  ok(true, "The front was setup up successfully.");
+
+  yield navigated;
+  ok(true, "Target automatically navigated when the front was set up.");
+
+  let snapshotActor = yield front.recordAnimationFrame();
+  ok(snapshotActor,
+    "A snapshot actor was sent after recording.");
+
+  let animationOverview = yield snapshotActor.getOverview();
+  ok(animationOverview,
+    "An animation overview could be retrieved after recording.");
+
+  let functionCalls = animationOverview.calls;
+  ok(functionCalls,
+    "An array of function call actors was sent after recording.");
+  is(functionCalls.length, 8,
+    "The number of function call actors is correct.");
+
+  info("Check the timestamps of function calls");
+
+  for (let i = 0; i < functionCalls.length - 1; i += 2) {
+    ok(functionCalls[i].timestamp > 0, "The timestamp of the called function is larger than 0.");
+    ok(functionCalls[i].timestamp < currentTime, "The timestamp has been minus the frame start time.");
+    ok(functionCalls[i + 1].timestamp > functionCalls[i].timestamp, "The timestamp of the called function is correct.");
+  }
+
+  yield removeTab(target.tab);
+  finish();
+}