test_meta_viewport6.html

Enable keyboard shortcuts

<!DOCTYPE HTML>

<html>

<head>

  <meta charset="utf-8">

  <title>meta viewport test</title>

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

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

  <meta name="viewport" content="width=2000, minimum-scale=0.75">

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

</head>

<body>

  <p>width=2000, minimum-scale=0.75</p>

  <script type="application/javascript">

    "use strict";

    add_task(async function test1() {

      await SpecialPowers.pushPrefEnv(scaleRatio(1.0));

      let info = getViewportInfo(800, 480);

      is(info.minZoom,     0.75,    "minumum scale is set explicitly");

      is(info.defaultZoom, 0.75,    "initial scale is bounded by the minimum scale");

      is(info.maxZoom,     10,      "maximum scale defaults to the absolute maximum");

      is(info.width,       2000,    "width is set explicitly");

      is(info.height,      1200,    "height is proportional to displayHeight");

      is(info.autoSize,    false,   "autoSize is disabled by default");

      is(info.allowZoom,   true,    "zooming is enabled by default");

      info = getViewportInfo(2000, 1000);

      is(info.minZoom,     0.75,    "minumum scale is still set explicitly");

      is(info.defaultZoom, 1,       "initial scale fits the width");

      is(info.width,       2000,    "width is set explicitly");

      is(info.height,      1000,    "height is proportional to the new displayHeight");

});

    add_task(async function test2() {

      await SpecialPowers.pushPrefEnv(scaleRatio(1.5));

      let info = getViewportInfo(800, 480);

      is(info.minZoom,     1.125,   "minumum scale is converted to device pixel scale");

      is(info.defaultZoom, 1.125,   "initial scale is bounded by the minimum scale");

      is(info.maxZoom,     15,      "maximum scale defaults to the absolute maximum");

      is(info.width,       2000,    "width is still set explicitly");

      is(info.height,      1200,    "height is still proportional to displayHeight");

});

  </script>

</body>

</html>