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Unified Diff: third_party/WebKit/LayoutTests/fast/performance/performance-paint-timing-observable.html

Issue 2528513003: first-paint and first-contentful paint (Closed)
Patch Set: Got rid of DCHECK cause it breaks unit tests Created 3 years, 11 months ago
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Index: third_party/WebKit/LayoutTests/fast/performance/performance-paint-timing-observable.html
diff --git a/third_party/WebKit/LayoutTests/fast/performance/performance-paint-timing-observable.html b/third_party/WebKit/LayoutTests/fast/performance/performance-paint-timing-observable.html
new file mode 100644
index 0000000000000000000000000000000000000000..e73b9e6e7e717a4dee0baa41fd4e0744280d91b3
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/fast/performance/performance-paint-timing-observable.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<head>
+<title>Performance Paint Timing Test</title>
+</head>
+<body>
+ <script src="../../resources/testharness.js"></script>
+ <script src="../../resources/testharnessreport.js"></script>
+ <script>
+
+ async_test(function (t) {
+ var observer = new PerformanceObserver(
+ t.step_func(function (entryList) {
+ var entries = entryList.getEntries();
+ assert_equals(entries.length, 2,
+ "There should be two paint timing instances.");
+ assert_equals(entries[0].entryType, "paint",
+ "Expected entryType to be: paint.");
+ assert_equals(entries[0].duration, 0,
+ "Expected duration to be: 0.");
+
+ assert_equals(entries[1].entryType, "paint",
+ "Expected entryType to be: paint.");
+ assert_equals(entries[1].duration, 0,
+ "Expected duration to be: 0.");
+ observer.disconnect();
+ t.done();
+ })
+ );
+ observer.observe({entryTypes: ["paint"]});
+
+ }, "Both first-paint-timing and first-contentful-paint timing entry are observable.");
+
+ </script>
+ <div style="background-color:black;color:white;padding:20px;">...test...</div>
+</body>
+</html>

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