tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_setDesktopBackgroundPreview.js (2864B)

      1 /* Any copyright is dedicated to the Public Domain.
      2 * http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 /**
      5 * Check whether the preview image for setDesktopBackground is rendered
      6 * correctly, without stretching
      7 */
      8 
      9 add_setup(async function () {
     10  await SpecialPowers.pushPrefEnv({
     11    set: [["test.wait300msAfterTabSwitch", true]],
     12  });
     13 });
     14 
     15 add_task(async function () {
     16  await BrowserTestUtils.withNewTab(
     17    {
     18      gBrowser,
     19      url: "about:logo",
     20    },
     21    async () => {
     22      const dialogLoad = BrowserTestUtils.domWindowOpened(null, async win => {
     23        await BrowserTestUtils.waitForEvent(win, "load");
     24        Assert.equal(
     25          win.document.documentElement.getAttribute("windowtype"),
     26          "Shell:SetDesktopBackground",
     27          "Opened correct window"
     28        );
     29        return true;
     30      });
     31 
     32      const image = content.document.images[0];
     33      EventUtils.synthesizeMouseAtCenter(image, { type: "contextmenu" });
     34 
     35      const menu = document.getElementById("contentAreaContextMenu");
     36      await BrowserTestUtils.waitForPopupEvent(menu, "shown");
     37      const menuClosed = BrowserTestUtils.waitForPopupEvent(menu, "hidden");
     38 
     39      const menuItem = document.getElementById("context-setDesktopBackground");
     40      try {
     41        menu.activateItem(menuItem);
     42      } catch (ex) {
     43        ok(
     44          menuItem.hidden,
     45          "should only fail to activate when menu item is hidden"
     46        );
     47        ok(
     48          !ShellService.canSetDesktopBackground,
     49          "Should only hide when not able to set the desktop background"
     50        );
     51        is(
     52          AppConstants.platform,
     53          "linux",
     54          "Should always be able to set desktop background on non-linux platforms"
     55        );
     56        todo(false, "Skipping test on this configuration");
     57 
     58        menu.hidePopup();
     59        await menuClosed;
     60        return;
     61      }
     62 
     63      await menuClosed;
     64 
     65      const win = await dialogLoad;
     66 
     67      /* setDesktopBackground.js does a setTimeout to wait for correct
     68       dimensions. If we don't wait here we could read the preview dimensions
     69       before they're changed to match the screen */
     70      await TestUtils.waitForTick();
     71 
     72      const canvas = win.document.getElementById("screen");
     73      const screenRatio = screen.width / screen.height;
     74      const previewRatio = canvas.clientWidth / canvas.clientHeight;
     75 
     76      info(`Screen dimensions are ${screen.width}x${screen.height}`);
     77      info(`Screen's raw ratio is ${screenRatio}`);
     78      info(
     79        `Preview dimensions are ${canvas.clientWidth}x${canvas.clientHeight}`
     80      );
     81      info(`Preview's raw ratio is ${previewRatio}`);
     82 
     83      Assert.ok(
     84        previewRatio < screenRatio + 0.01 && previewRatio > screenRatio - 0.01,
     85        "Preview's aspect ratio is within ±.01 of screen's"
     86      );
     87 
     88      win.close();
     89 
     90      await menuClosed;
     91    }
     92  );
     93 });