test_ext_background_page.html

Enable keyboard shortcuts

<!DOCTYPE HTML>

<html>

  <head>

    <title>WebExtension test</title>

    <meta charset="utf-8">

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

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

    <script src="head.js" type="text/javascript"></script>

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

  </head>

  <body>

    <script type="text/javascript">

      "use strict";

      add_task(async function testAlertNotShownInBackgroundWindow() {

        let extension = ExtensionTestUtils.loadExtension({

          background: function () {

            browser.test.assertEq(null, prompt(), "prompt() returns null");

            browser.test.assertFalse(confirm(), "confirm() returns false");

            alert("I am an alert in the background.");

            browser.test.notifyPass("alertCalled");

});

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

          Assert.ok(!Services.wm.getEnumerator("alert:alert").hasMoreElements(), "Alerts should not be present at the start of the test.");

});

        await extension.startup();

        await extension.awaitFinish("alertCalled");

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

          Assert.ok(!Services.wm.getEnumerator("alert:alert").hasMoreElements(), "Alerts should not be present after calling alert().");

});

        await extension.unload();

});

    </script>

  </body>

</html>