forked from mirrors/gecko-dev
1f830c96da
# ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D36042 --HG-- extra : source : d3afcafdce650a6f36cebbc126ee93b17f13cf52
66 lines
2.2 KiB
JavaScript
66 lines
2.2 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/ */
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/**
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* Check whether the preview image for setDesktopBackground is rendered
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* correctly, without stretching
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*/
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add_task(async function() {
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await BrowserTestUtils.withNewTab(
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{
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gBrowser,
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url: "about:logo",
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},
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async browser => {
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const dialogLoad = BrowserTestUtils.domWindowOpened(null, async win => {
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await BrowserTestUtils.waitForEvent(win, "load");
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Assert.equal(
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win.document.documentElement.getAttribute("windowtype"),
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"Shell:SetDesktopBackground",
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"Opened correct window"
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);
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return true;
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});
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const image = content.document.images[0];
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EventUtils.synthesizeMouseAtCenter(image, { type: "contextmenu" });
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const menu = document.getElementById("contentAreaContextMenu");
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await BrowserTestUtils.waitForPopupEvent(menu, "shown");
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document.getElementById("context-setDesktopBackground").click();
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// Need to explicitly close the menu (and wait for it), otherwise it fails
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// verify/later tests
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const menuClosed = BrowserTestUtils.waitForPopupEvent(menu, "hidden");
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menu.hidePopup();
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const win = await dialogLoad;
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/* setDesktopBackground.js does a setTimeout to wait for correct
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dimensions. If we don't wait here we could read the preview dimensions
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before they're changed to match the screen */
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await TestUtils.waitForTick();
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const canvas = win.document.getElementById("screen");
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const screenRatio = screen.width / screen.height;
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const previewRatio = canvas.clientWidth / canvas.clientHeight;
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info(`Screen dimensions are ${screen.width}x${screen.height}`);
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info(`Screen's raw ratio is ${screenRatio}`);
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info(
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`Preview dimensions are ${canvas.clientWidth}x${canvas.clientHeight}`
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);
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info(`Preview's raw ratio is ${previewRatio}`);
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Assert.ok(
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previewRatio < screenRatio + 0.01 && previewRatio > screenRatio - 0.01,
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"Preview's aspect ratio is within ±.01 of screen's"
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);
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win.close();
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await menuClosed;
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}
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);
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});
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