test_link_relList_supports_manifest.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=1596040

-->

<head>

  <meta charset="utf-8">

  <title>Test for Bug 1596040 - Link relList support returns false for manifest</title>

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

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

  <script>

  "use strict";

  SimpleTest.waitForExplicitFinish();

  async function run() {

    const prefSetting = [

      { manifest: true, modulepreload: true },

      { manifest: true, modulepreload: false },

      { manifest: false, modulepreload: true },

      { manifest: false, modulepreload: false },

];

    for (const { manifest, modulepreload } of prefSetting) {

      await SpecialPowers.pushPrefEnv({

        set: [

          ["dom.manifest.enabled", manifest],

          ["network.modulepreload", modulepreload],

],

});

      const { relList } = document.createElement("link");

is(

        relList.supports("manifest"),

        manifest,

        `Expected manifest to be ${manifest}`

);

is(

        relList.supports("modulepreload"),

        modulepreload,

        `Expected preload to be ${modulepreload}`

);

  run()

    .catch(console.error)

    .finally(() => SimpleTest.finish());

  </script>

</head>