1 files changed, 34 insertions, 0 deletions
diff --git a/dom/animation/test/mozilla/file_set-easing.html b/dom/animation/test/mozilla/file_set-easing.html
new file mode 100644
index 000000000..072b125cb
--- /dev/null
+++ b/dom/animation/test/mozilla/file_set-easing.html
@@ -0,0 +1,34 @@
+<!doctype html>
+<head>
+<meta charset=utf-8>
+<title>Test setting easing in sandbox</title>
+<script src="../testcommon.js"></script>
+</head>
+<body>
+<script>
+"use strict";
+
+test(function(t) {
+  const div = document.createElement("div");
+  document.body.appendChild(div);
+  div.animate({ opacity: [0, 1] }, 100000 );
+
+  const contentScript = function() {
+    try {
+      document.getAnimations()[0].effect.timing.easing = "linear";
+      assert_true(true, 'Setting easing should not throw in sandbox');
+    } catch (e) {
+      assert_unreached('Setting easing threw ' + e);
+    }
+  };
+
+  const sandbox = new SpecialPowers.Cu.Sandbox(window);
+  sandbox.importFunction(document, "document");
+  sandbox.importFunction(assert_true, "assert_true");
+  sandbox.importFunction(assert_unreached, "assert_unreached");
+  SpecialPowers.Cu.evalInSandbox(`(${contentScript.toSource()})()`, sandbox);
+}, 'Setting easing should not throw any exceptions in sandbox');
+
+done();
+</script>
+</body>