1 files changed, 32 insertions, 0 deletions
diff --git a/dom/animation/test/mozilla/test_document_timeline_origin_time_range.html b/dom/animation/test/mozilla/test_document_timeline_origin_time_range.html
new file mode 100644
index 0000000000..b2aeef8a77
--- /dev/null
+++ b/dom/animation/test/mozilla/test_document_timeline_origin_time_range.html
@@ -0,0 +1,32 @@
+<!doctype html>
+<meta charset=utf-8>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../testcommon.js"></script>
+<body>
+<div id="log"></div>
+<script>
+'use strict';
+
+// If the originTime parameter passed to the DocumentTimeline exceeds
+// the range of the internal storage type (a signed 64-bit integer number
+// of ticks--a platform-dependent unit) then we should throw.
+// Infinity isn't allowed as an origin time value and clamping to just
+// inside the allowed range will just mean we overflow elsewhere.
+
+test(function(t) {
+  assert_throws({ name: 'TypeError'},
+    function() {
+      new DocumentTimeline({ originTime: Number.MAX_SAFE_INTEGER });
+    });
+}, 'Calculated current time is positive infinity');
+
+test(function(t) {
+  assert_throws({ name: 'TypeError'},
+    function() {
+      new DocumentTimeline({ originTime: -1 * Number.MAX_SAFE_INTEGER });
+    });
+}, 'Calculated current time is negative infinity');
+
+</script>
+</body>