tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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browser_panel_vsync.js (2052B)

      1 /* Any copyright is dedicated to the Public Domain.
      2   http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 "use strict";
      5 
      6 Services.scriptloader.loadSubScript(
      7  "chrome://mochitests/content/browser/browser/components/downloads/test/browser/head.js",
      8  this
      9 );
     10 
     11 add_task(
     12  async function test_opening_panel_and_closing_should_not_leave_vsync() {
     13    await SpecialPowers.pushPrefEnv({
     14      set: [["browser.download.autohideButton", false]],
     15    });
     16    await promiseButtonShown("downloads-button");
     17 
     18    const downloadsButton = document.getElementById("downloads-button");
     19    const shownPromise = promisePanelOpened();
     20    EventUtils.synthesizeNativeMouseEvent({
     21      type: "click",
     22      target: downloadsButton,
     23      atCenter: true,
     24    });
     25    await shownPromise;
     26 
     27    is(DownloadsPanel.panel.state, "open", "Check that panel state is 'open'");
     28 
     29    await TestUtils.waitForCondition(
     30      () => !ChromeUtils.vsyncEnabled(),
     31      "Make sure vsync disabled"
     32    );
     33    // Should not already be using vsync
     34    ok(!ChromeUtils.vsyncEnabled(), "vsync should be off initially");
     35 
     36    if (
     37      AppConstants.platform == "linux" &&
     38      DownloadsPanel.panel.state != "open"
     39    ) {
     40      // Panels sometime receive spurious popuphiding events on Linux.
     41      // Given the main target of this test is Windows, avoid causing
     42      // intermittent failures and just make the test return early.
     43      todo(
     44        false,
     45        "panel should still be 'open', current state: " +
     46          DownloadsPanel.panel.state
     47      );
     48      return;
     49    }
     50 
     51    const hiddenPromise = BrowserTestUtils.waitForEvent(
     52      DownloadsPanel.panel,
     53      "popuphidden"
     54    );
     55    EventUtils.synthesizeKey("VK_ESCAPE", {}, window);
     56    await hiddenPromise;
     57    await TestUtils.waitForCondition(
     58      () => !ChromeUtils.vsyncEnabled(),
     59      "wait for vsync to be disabled again"
     60    );
     61 
     62    ok(!ChromeUtils.vsyncEnabled(), "vsync should still be off");
     63    is(
     64      DownloadsPanel.panel.state,
     65      "closed",
     66      "Check that panel state is 'closed'"
     67    );
     68  }
     69 );