1 files changed, 34 insertions, 0 deletions
diff --git a/dom/base/test/meta_viewport/test_meta_viewport_fit.html b/dom/base/test/meta_viewport/test_meta_viewport_fit.html
new file mode 100644
index 0000000000..e86ad817d6
--- /dev/null
+++ b/dom/base/test/meta_viewport/test_meta_viewport_fit.html
@@ -0,0 +1,34 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>meta viewport viewport-fit test</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+  <meta name="viewport" content="viewport-fit=cover">
+  <script src="viewport_helpers.js"></script>
+</head>
+<body>
+  <p>viewport-fit=cover</p>
+  <script type="application/javascript">
+    "use strict";
+
+    add_task(async function test1() {
+      await SpecialPowers.pushPrefEnv(scaleRatio(1.0));
+
+      let viewportFit = SpecialPowers.getDOMWindowUtils(window).getViewportFitInfo();
+      is(viewportFit, "cover", "viewport-fit is cover correctly");
+
+      let elements = document.getElementsByTagName("meta");
+      for (let meta of elements) {
+        if (meta.getAttribute("name") == "viewport") {
+          meta.setAttribute("content", "viewport-fit=contain");
+        }
+      }
+
+      viewportFit = SpecialPowers.getDOMWindowUtils(window).getViewportFitInfo();
+      is(viewportFit, "contain", "viewport-fit is contain correctly");
+    });
+  </script>
+</body>
+</html>