test_meta_viewport_insert_before_existing_tag.html

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<!DOCTYPE HTML>

<html>

<head>

  <meta charset="utf-8">

  <title>interting a meta viewport tag before existing one</title>

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

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

  <meta name="viewport" content="width=980">

  <script src="viewport_helpers.js"></script>

</head>

<body>

  <script type="application/javascript">

    "use strict";

    add_task(async function multiple_viewport_tags() {

      await SpecialPowers.pushPrefEnv(scaleRatio(1.0));

      const meta = document.createElement("meta");

      meta.setAttribute("name", "viewport");

      meta.setAttribute("content", "initial-scale=1,maximum-scale=1");

      document.head.insertBefore(meta, document.querySelector("meta[name=viewport]"));

      let info = getViewportInfo(800, 480);

      info = getViewportInfo(800, 480);

      is(info.defaultZoom, 1, "initial zoom is 1");

      is(info.width, 800, "width should be 800");

      is(info.height, 480, "height should be 480");

      is(info.maxZoom, 1, "maximum scale is 1");

});

  </script>

</body>

</html>