1 files changed, 41 insertions, 0 deletions
diff --git a/devtools/server/tests/browser/browser_timeline_iframes.js b/devtools/server/tests/browser/browser_timeline_iframes.js
new file mode 100644
index 000000000..60728873f
--- /dev/null
+++ b/devtools/server/tests/browser/browser_timeline_iframes.js
@@ -0,0 +1,41 @@
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test the timeline front receives markers events for operations that occur in
+// iframes.
+
+const {TimelineFront} = require("devtools/shared/fronts/timeline");
+
+add_task(function* () {
+  let browser = yield addTab(MAIN_DOMAIN + "timeline-iframe-parent.html");
+  let doc = browser.contentDocument;
+
+  initDebuggerServer();
+  let client = new DebuggerClient(DebuggerServer.connectPipe());
+  let form = yield connectDebuggerClient(client);
+  let front = TimelineFront(client, form);
+
+  info("Start timeline marker recording");
+  yield front.start({ withMarkers: true });
+
+  // Check that we get markers for a few iterations of the timer that runs in
+  // the child frame.
+  for (let i = 0; i < 3; i++) {
+    yield wait(300); // That's the time the child frame waits before changing styles.
+    let markers = yield once(front, "markers");
+    ok(markers.length, "Markers were received for operations in the child frame");
+  }
+
+  info("Stop timeline marker recording");
+  yield front.stop();
+  yield client.close();
+  gBrowser.removeCurrentTab();
+});
+
+function wait(ms) {
+  return new Promise(resolve =>
+    setTimeout(resolve, ms));
+}