1 files changed, 41 insertions, 0 deletions
diff --git a/dom/base/test/test_meta_viewport2.html b/dom/base/test/test_meta_viewport2.html
new file mode 100644
index 0000000000..e0f45813be
--- /dev/null
+++ b/dom/base/test/test_meta_viewport2.html
@@ -0,0 +1,41 @@
+<!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=device-width">
+  <script src="viewport_helpers.js"></script>
+</head>
+<body>
+  <p>width=device-width</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 100%");
+      is(info.width,       800,  "width is the same as the displayWidth");
+      is(info.height,      480,  "height is the same as the displayHeight");
+      is(info.autoSize,    true, "width=device-width enables autoSize");
+      is(info.allowZoom,   true, "zooming is enabled by default");
+
+      info = getViewportInfo(900, 600);
+      is(info.width,       900,  "changing the displayWidth changes the width");
+      is(info.height,      600,  "changing the displayHeight changes the height");
+    });
+
+    add_task(async function test2() {
+      await SpecialPowers.pushPrefEnv(scaleRatio(1.5));
+
+      let info = getViewportInfo(900, 600);
+      is(info.defaultZoom, 1.5,  "initial zoom is 150%");
+      is(info.width,       600,  "width equals displayWidth/1.5");
+      is(info.height,      400,  "height equals displayHeight/1.5");
+    });
+  </script>
+</body>
+</html>