Bug 1109390 part 27 - Add further test to test_animations-pausing.html for cancelling a pause by setting the current time; r=jwatt

dom/animation/test/css-animations/test_animation-pausing.html

@@ -176,4 +176,27 @@ async_test(function(t) {
 }, 'pause() applies pending changes to animation-play-state first');
 // (Note that we can't actually test for this; see comment above, in test-body.)
 
+async_test(function(t) {
+  var div = addDiv(t, { style: 'animation: anim 1000s' });
+  var animation = div.getAnimations()[0];
+
+  var readyPromiseRun = false;
+
+  animation.ready.then(t.step_func(function() {
+    div.style.animationPlayState = 'paused';
+    assert_equals(animation.playState, 'pending', 'Animation is pause pending');
+
+    // Set current time
+    animation.currentTime = 5000;
+    assert_equals(animation.playState, 'running',
+                  'Animation is running immediately after setting currentTime');
+
+    // The ready promise should now be resolved. If it's not then test will
+    // probably time out before anything else happens that causes it to resolve.
+    return animation.ready;
+  })).then(t.step_func(function() {
+    t.done();
+  }));
+}, 'Setting the current time cancels a pending pause');
+
 </script>