1 files changed, 37 insertions, 0 deletions
diff --git a/LayoutTests/fast/animation/script-tests/request-animation-frame-timestamps-advance.js b/LayoutTests/fast/animation/script-tests/request-animation-frame-timestamps-advance.js
new file mode 100644
index 0000000..52d9b90
--- /dev/null
+++ b/LayoutTests/fast/animation/script-tests/request-animation-frame-timestamps-advance.js
@@ -0,0 +1,37 @@
+description("Tests the timestamps provided to requestAnimationFrame callbacks advance");
+
+function busyWait(millis) {
+    var start = Date.now();
+    while (Date.now()-start < millis) {}
+}
+
+var firstTimestamp = undefined;
+var secondTimestamp = undefined;
+
+window.webkitRequestAnimationFrame(function(timestamp) {
+    firstTimestamp = timestamp;
+    shouldBeDefined("firstTimestamp");
+    window.webkitRequestAnimationFrame(function(timestamp) {
+        secondTimestamp = timestamp;
+        shouldBeDefined("secondTimestamp");
+        shouldBeTrue("secondTimestamp > firstTimestamp");
+        isSuccessfullyParsed();
+        if (window.layoutTestController)
+            layoutTestController.notifyDone();
+    });
+    busyWait(10);
+    if (window.layoutTestController)
+        layoutTestController.display();
+});
+
+
+if (window.layoutTestController)
+    window.setTimeout(function() {
+        layoutTestController.display();
+    });
+
+
+if (window.layoutTestController)
+    layoutTestController.waitUntilDone();
+
+var successfullyParsed = true;