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diff --git a/dom/base/test/meta_viewport/test_meta_viewport8.html b/dom/base/test/meta_viewport/test_meta_viewport8.html
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+++ b/dom/base/test/meta_viewport/test_meta_viewport8.html
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+<!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="initial-scale=0.01">
+ <script src="viewport_helpers.js"></script>
+</head>
+<body>
+ <p>minimum-scale=0.01</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, 0.25, "minimum scale defaults to the absolute minimum");
+ is(info.defaultZoom, 0.25, "initial scale is bounded by the minimum scale");
+ is(info.width, 3200, "width is scaled correctly by zoom level");
+ is(info.height, 1920, "height is scaled correctly by zoom level");
+ });
+ </script>
+</body>
+</html>