The Tor Browser: browser/devtools/canvasdebugger/test/browser_canvas-frontend-record-01.js@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* Any copyright is dedicated to the Public Domain.

     2    http://creativecommons.org/publicdomain/zero/1.0/ */

     4 /**

     5  * Tests whether the frontend behaves correctly while reording a snapshot.

     6  */

     8 function ifTestingSupported() {

     9   let [target, debuggee, panel] = yield initCanavsDebuggerFrontend(SIMPLE_CANVAS_URL);

    10   let { window, EVENTS, $, SnapshotsListView } = panel.panelWin;

    12   yield reload(target);

    14   is($("#record-snapshot").hasAttribute("checked"), false,

    15     "The 'record snapshot' button should initially be unchecked.");

    16   is($("#record-snapshot").hasAttribute("disabled"), false,

    17     "The 'record snapshot' button should initially be enabled.");

    18   is($("#record-snapshot").hasAttribute("hidden"), false,

    19     "The 'record snapshot' button should now be visible.");

    21   is(SnapshotsListView.itemCount, 0,

    22     "There should be no items available in the snapshots list view.");

    23   is(SnapshotsListView.selectedIndex, -1,

    24     "There should be no selected item in the snapshots list view.");

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

    27   let recordingFinished = once(window, EVENTS.SNAPSHOT_RECORDING_FINISHED);

    28   SnapshotsListView._onRecordButtonClick();

    30   yield recordingStarted;

    31   ok(true, "Started recording a snapshot of the animation loop.");

    33   is($("#record-snapshot").getAttribute("checked"), "true",

    34     "The 'record snapshot' button should now be checked.");

    35   is($("#record-snapshot").getAttribute("disabled"), "true",

    36     "The 'record snapshot' button should now be disabled.");

    37   is($("#record-snapshot").hasAttribute("hidden"), false,

    38     "The 'record snapshot' button should still be visible.");

    40   is(SnapshotsListView.itemCount, 1,

    41     "There should be one item available in the snapshots list view now.");

    42   is(SnapshotsListView.selectedIndex, -1,

    43     "There should be no selected item in the snapshots list view yet.");

    45   yield recordingFinished;

    46   ok(true, "Finished recording a snapshot of the animation loop.");

    48   is($("#record-snapshot").hasAttribute("checked"), false,

    49     "The 'record snapshot' button should now be unchecked.");

    50   is($("#record-snapshot").hasAttribute("disabled"), false,

    51     "The 'record snapshot' button should now be re-enabled.");

    52   is($("#record-snapshot").hasAttribute("hidden"), false,

    53     "The 'record snapshot' button should still be visible.");

    55   is(SnapshotsListView.itemCount, 1,

    56     "There should still be only one item available in the snapshots list view.");

    57   is(SnapshotsListView.selectedIndex, 0,

    58     "There should be one selected item in the snapshots list view now.");

    60   yield teardown(panel);

    61   finish();

    62 }

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