Merge pull request web-platform-tests#7 from alancutter/finishPlay

Upstream animation-play-after-finish-restarts.html from Blink

web-animations/interfaces/Animation/play.html

@@ -31,5 +31,33 @@
 }, 'play() throws when seeking an infinite-duration animation played in ' +
    'reverse');
 
+test(function(t) {
+  var div = createDiv(t);
+  var animation = div.animate(null, 100 * MS_PER_SEC);
+  animation.currentTime = 1 * MS_PER_SEC;
+  assert_times_equal(animation.currentTime, 1 * MS_PER_SEC);
+  animation.play();
+  assert_times_equal(animation.currentTime, 1 * MS_PER_SEC);
+}, 'play() leaves currentTime unchanged on running animation');
+
+test(function(t) {
+  var div = createDiv(t);
+  var animation = div.animate(null, 100 * MS_PER_SEC);
+  animation.finish();
+  assert_times_equal(animation.currentTime, 100 * MS_PER_SEC);
+  animation.play();
+  assert_times_equal(animation.currentTime, 0);
+}, 'play() seeks back to start on finished animation');
+
+test(function(t) {
+  var div = createDiv(t);
+  var animation = div.animate(null, 100 * MS_PER_SEC);
+  animation.playbackRate = -1;
+  animation.currentTime = 0;
+  assert_times_equal(animation.currentTime, 0);
+  animation.play();
+  assert_times_equal(animation.currentTime, 100 * MS_PER_SEC);
+}, 'play() seeks to end on reverse finished animation');
+
 </script>
 </body>