test_blocklist_gfx_initialized.html

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<head>

  <meta charset="utf-8">

  <title>Test gfx blocklist is initialized</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

  <script type="application/javascript">

add_task(async function check_GfxBlocklistRS_initialized() {

    // We have extensive xpcshell tests to ensure the blocklist works

    // correctly. Here we just want to ensure the blocklist is indeed

    // initialized in a regular browser setup.

    // In fact, calling GfxBlocklistRS.checkForEntries() in order to test

    // specific functionality would lazily initialize the blocklist, negating

    // the value of this test.

    let initialized = await SpecialPowers.spawnChrome([], async () => {

        const { BlocklistPrivate } = ChromeUtils.importESModule(

            "resource://gre/modules/Blocklist.sys.mjs"

);

        return BlocklistPrivate.GfxBlocklistRS._initialized;

});

    ok(initialized, "Gfx Blocklist was initialized")

});

  </script>

</head>

<body>

</body>

</html>