Import web-platform-tests@5c527917247fa5e21528f2e742717192976b2fac

third_party/WebKit/LayoutTests/imported/web-platform-tests/web-animations/animation/constructor.html

Index: third_party/WebKit/LayoutTests/imported/web-platform-tests/web-animations/animation/constructor.html
diff --git a/third_party/WebKit/LayoutTests/imported/web-platform-tests/web-animations/animation/constructor.html b/third_party/WebKit/LayoutTests/imported/web-platform-tests/web-animations/animation/constructor.html
index 2ea07710cfeea48d4d333b06b26969c36c2a07cf..78a67fc4c4c4c4c55735902f7ab813073f033cea 100644
--- a/third_party/WebKit/LayoutTests/imported/web-platform-tests/web-animations/animation/constructor.html
+++ b/third_party/WebKit/LayoutTests/imported/web-platform-tests/web-animations/animation/constructor.html
@@ -55,5 +55,19 @@ gTestArguments.forEach(function(args) {
   }, "Animation can be constructed " + args.description);
 });
 
+test(function(t) {
+  var effect = new KeyframeEffectReadOnly(null,
+                                          { left: ["10px", "20px"] },
+                                          { duration: 10000,
+                                            fill: "forwards" });
+  var anim = new Animation(effect, document.timeline);
+  anim.pause();
+  assert_equals(effect.getComputedTiming().progress, 0.0);
+  anim.currentTime += 5000;
+  assert_equals(effect.getComputedTiming().progress, 0.5);
+  anim.finish();
+  assert_equals(effect.getComputedTiming().progress, 1.0);
+}, "Animation constructed by an effect with null target runs normally");
+
 </script>
 </body>