gecko/browser/devtools/canvasdebugger/test/browser_canvas-frontend-img-screenshots.js

35 lines
1.3 KiB
JavaScript

/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
/**
* Tests if screenshots are properly displayed in the UI.
*/
function ifTestingSupported() {
let { target, panel } = yield initCanvasDebuggerFrontend(SIMPLE_CANVAS_URL);
let { window, $, EVENTS, SnapshotsListView } = panel.panelWin;
yield reload(target);
let recordingFinished = once(window, EVENTS.SNAPSHOT_RECORDING_FINISHED);
let callListPopulated = once(window, EVENTS.CALL_LIST_POPULATED);
let screenshotDisplayed = once(window, EVENTS.CALL_SCREENSHOT_DISPLAYED);
SnapshotsListView._onRecordButtonClick();
yield promise.all([recordingFinished, callListPopulated, screenshotDisplayed]);
is($("#screenshot-container").hidden, false,
"The screenshot container should now be visible.");
is($("#screenshot-dimensions").getAttribute("value"), "128 x 128",
"The screenshot dimensions label has the expected value.");
is($("#screenshot-image").getAttribute("flipped"), "false",
"The screenshot element should not be flipped vertically.");
ok(window.getComputedStyle($("#screenshot-image")).backgroundImage.contains("#screenshot-rendering"),
"The screenshot element should have an offscreen canvas element as a background.");
yield teardown(panel);
finish();
}