/* 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 that the timeline front's start/stop/isRecording methods work in a
// simple use case, and that markers events are sent when operations occur.
// Note that this test isn't concerned with which markers are actually recorded,
// just that markers are recorded at all.
// Trying to check marker types here may lead to intermittents, see bug 1066474.

const {TimelineFront} = require("devtools/shared/fronts/timeline");

add_task(function* () {
  let browser = yield addTab("data:text/html;charset=utf-8,mop");
  let doc = browser.contentDocument;

  initDebuggerServer();
  let client = new DebuggerClient(DebuggerServer.connectPipe());
  let form = yield connectDebuggerClient(client);
  let front = TimelineFront(client, form);

  ok(front, "The TimelineFront was created");

  let isActive = yield front.isRecording();
  ok(!isActive, "The TimelineFront is not initially recording");

  info("Flush any pending reflows");
  let forceSyncReflow = doc.body.innerHeight;

  info("Start recording");
  yield front.start({ withMarkers: true });

  isActive = yield front.isRecording();
  ok(isActive, "The TimelineFront is now recording");

  info("Change some style on the page to cause style/reflow/paint");
  let onMarkers = once(front, "markers");
  doc.body.style.padding = "10px";
  let markers = yield onMarkers;

  ok(true, "The markers event was fired");
  ok(markers.length > 0, "Markers were returned");

  info("Flush pending reflows again");
  forceSyncReflow = doc.body.innerHeight;

  info("Change some style on the page to cause style/paint");
  onMarkers = once(front, "markers");
  doc.body.style.backgroundColor = "red";
  markers = yield onMarkers;

  ok(markers.length > 0, "markers were returned");

  yield front.stop();

  isActive = yield front.isRecording();
  ok(!isActive, "Not recording after stop()");

  yield client.close();
  gBrowser.removeCurrentTab();
});