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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>initial-scale=0.5 in meta viewport</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<meta name="viewport" content="initial-scale=0.5">
<script src="viewport_helpers.js"></script>
</head>
<body>
<p>initial-scale=0.5</p>
<script type="application/javascript">
"use strict";
add_task(async function initial_scale_0_5() {
await SpecialPowers.pushPrefEnv(scaleRatio(1.0));
let info = getViewportInfo(800, 480);
// 'min-width' is 'display width / initial-scale', thus the value will be
// bigger than the display width in the case where the initial-scale is
// less than 1, thus the final viewport width will be the 'min-width'.
// See 'Resolve initial width and height from min/max descriptors' section
// in the spec for more detail.
// height is calculated by the same rule.
// https://drafts.csswg.org/css-device-adapt/#resolve-initial-width-height
is(info.width, 1600, "width should be scaled by 1 / initial-scale");
is(info.height, 960, "height should be scaled by 1 / initial-scale");
is(info.defaultZoom, 0.5, "initial-scale should be 0.5");
});
</script>
</body>
</html>
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