palemoon-dev/platform/devtools/client/canvasdebugger/test/browser_canvas-frontend-stop-01.js

/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

/**
 * Tests that you can stop a recording that does not have a rAF cycle.
 */

function* ifTestingSupported() {
  let { target, panel } = yield initCanvasDebuggerFrontend(NO_CANVAS_URL);
  let { window, EVENTS, $, SnapshotsListView } = panel.panelWin;

  yield reload(target);

  let recordingStarted = once(window, EVENTS.SNAPSHOT_RECORDING_STARTED);
  SnapshotsListView._onRecordButtonClick();

  yield recordingStarted;

  is($("#empty-notice").hidden, true, "Empty notice not shown");
  is($("#waiting-notice").hidden, false, "Waiting notice shown");

  let recordingFinished = once(window, EVENTS.SNAPSHOT_RECORDING_FINISHED);
  let recordingCancelled = once(window, EVENTS.SNAPSHOT_RECORDING_CANCELLED);
  SnapshotsListView._onRecordButtonClick();

  yield promise.all([recordingFinished, recordingCancelled]);

  ok(true, "Recording stopped and was considered failed.");

  is(SnapshotsListView.itemCount, 0, "No snapshots in the list.");
  is($("#empty-notice").hidden, false, "Empty notice shown");
  is($("#waiting-notice").hidden, true, "Waiting notice not shown");

  yield teardown(panel);
  finish();
}