[DevTools] New harness for inspector-protocol layout tests

third_party/WebKit/LayoutTests/inspector-protocol/animation/animation-zero-duration.js

Index: third_party/WebKit/LayoutTests/inspector-protocol/animation/animation-zero-duration.js
diff --git a/third_party/WebKit/LayoutTests/inspector-protocol/animation/animation-zero-duration.js b/third_party/WebKit/LayoutTests/inspector-protocol/animation/animation-zero-duration.js
new file mode 100644
index 0000000000000000000000000000000000000000..32af3781bf9716744c2b297119c010a6710814c5
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/inspector-protocol/animation/animation-zero-duration.js
@@ -0,0 +1,27 @@
+(async function() {
+  let {page, session, Protocol} = await InspectorTest.startHTML(`
+    <style type='text/css'>
+    #node.anim {
+        animation: anim 0 ease-in-out;
+    }
+
+    @keyframes anim {
+        from {
+            width: 100px;
+        }
+        to {
+            width: 200px;
+        }
+    }
+    </style>
+    <div id='node' style='background-color: red; width: 100px'></div>
+  `, '');
+
+  Protocol.Animation.enable();
+  session.evaluate('node.classList.add("anim")');
+  await Protocol.Animation.onceAnimationCreated();
+  InspectorTest.log('Animation created');
+  await Protocol.Animation.onceAnimationStarted();
+  InspectorTest.log('Animation started');
+  InspectorTest.completeTest();
+})();