test_meta_viewport_remove_node_from_multiple.html

Enable keyboard shortcuts

<!DOCTYPE HTML>

<html>

<head>

  <meta charset="utf-8">

  <title>remove a meta viewport node from multiple ones</title>

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

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

  <meta name="viewport" content="width=device-width, initial-scale=1">

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

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

</head>

<body>

  <script type="application/javascript">

    "use strict";

    add_task(async function remove_a_viewport_node() {

      await SpecialPowers.pushPrefEnv(scaleRatio(1.0));

      let info = getViewportInfo(800, 480);

      // We use "width=980" for viewport stuff.

      fuzzeq(info.defaultZoom, 800/980, "initial scale is calculated based on width");

      is(info.minZoom,     0.25,     "minimum scale defaults to the absolute minimum");

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

      is(info.width,       980,      "width is the default width");

      is(info.height,      588,      "height is proportional to displayHeight");

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

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

      document.getElementById("willBeRemoved").remove();

      info = getViewportInfo(800, 480);

      // Now it was removed, but we remain the same.

      fuzzeq(info.defaultZoom, 800/980, "initial scale is calculated based on width");

      is(info.minZoom,     0.25,     "minimum scale defaults to the absolute minimum");

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

      is(info.width,       980,      "width is the default width");

      is(info.height,      588,      "height is proportional to displayHeight");

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

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

});

  </script>

</body>

</html>