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<!DOCTYPE HTML>
<html>
<head>
  <title>Verify detectLangauge</title>
  <meta charset="utf-8">
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/ExtensionTestUtils.js"></script>
  <script type="text/javascript" src="head.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>

<script type="text/javascript">
"use strict";


add_task(async function testDetectLanguage() {
  let extension = ExtensionTestUtils.loadExtension({
    manifest: {
      permissions: ["tabs"],
      host_permissions: ["<all_urls>"],
      granted_host_permissions: true
    },

    background: async function() {
      const BASE_PATH = "tests/toolkit/components/extensions/test/mochitest";

      function loadTab(url) {
        return browser.tabs.create({ url });
      }

      try {
        let tab = await loadTab(
          `https://example.com/${BASE_PATH}/file_language_ja.html`
        );
        let lang = await browser.tabs.detectLanguage(tab.id);
        browser.test.assertEq(
          "ja",
          lang,
          "Japanese document should be detected as Japanese"
        );
        await browser.tabs.remove(tab.id);

        tab = await loadTab(
          `https://example.com/${BASE_PATH}/file_language_fr_en.html`
        );
        lang = await browser.tabs.detectLanguage(tab.id);
        browser.test.assertEq(
          "fr",
          lang,
          "French/English document should be detected as primarily French"
        );
        await browser.tabs.remove(tab.id);

        tab = await loadTab(
          `https://example.com/${BASE_PATH}/file_language_tlh.html`
        );
        lang = await browser.tabs.detectLanguage(tab.id);
        browser.test.assertEq(
          "und",
          lang,
          "Klingon document should not be detected, should return 'und'"
        );
        await browser.tabs.remove(tab.id);

        browser.test.notifyPass("detectLanguage");
      } catch (e) {
        browser.test.fail(`Error: ${e} :: ${e.stack}`);
        browser.test.notifyFail("detectLanguage");
      }
    },
  });

  await extension.startup();

  await extension.awaitFinish("detectLanguage");

  await extension.unload();
});


</script>

</body>
</html>