1 files changed, 42 insertions, 0 deletions
diff --git a/dom/base/test/meta_viewport/test_meta_viewport4.html b/dom/base/test/meta_viewport/test_meta_viewport4.html
new file mode 100644
index 0000000000..bc7f7ada55
--- /dev/null
+++ b/dom/base/test/meta_viewport/test_meta_viewport4.html
@@ -0,0 +1,42 @@
+<!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=1.0, user-scalable=no">
+  <script src="viewport_helpers.js"></script>
+</head>
+<body>
+  <p>initial-scale=1.0, user-scalable=no</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.defaultZoom, 1,     "initial zoom is set explicitly");
+      is(info.width,       800,   "width fits the initial zoom level");
+      is(info.height,      480,   "height fits the initial zoom level");
+      is(info.autoSize,    true,  "initial-scale=1 enables autoSize");
+      is(info.allowZoom,   false, "zooming is explicitly disabled");
+
+      info = getViewportInfo(480, 800);
+      is(info.defaultZoom, 1,     "initial zoom is still set explicitly");
+      is(info.width,       480,   "width changes to match the displayWidth");
+      is(info.height,      800,   "height changes to match the displayHeight");
+    });
+
+    add_task(async function test2() {
+      await SpecialPowers.pushPrefEnv(scaleRatio(1.5));
+
+      let info = getViewportInfo(800, 480);
+      is(info.defaultZoom, 1.5,   "initial zoom is adjusted for device pixel ratio");
+      is(info.width,       533,   "width fits the initial zoom");
+      is(info.height,      320,   "height fits the initial zoom");
+    });
+  </script>
+</body>
+</html>