Index: third_party/WebKit/LayoutTests/http/tests/performance-timing/paint-timing/first-contentful-bg-image.html |
diff --git a/third_party/WebKit/LayoutTests/http/tests/performance-timing/paint-timing/first-contentful-bg-image.html b/third_party/WebKit/LayoutTests/http/tests/performance-timing/paint-timing/first-contentful-bg-image.html |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3f1fcbda5900ce997a58d91ab6fec63f04afb760 |
--- /dev/null |
+++ b/third_party/WebKit/LayoutTests/http/tests/performance-timing/paint-timing/first-contentful-bg-image.html |
@@ -0,0 +1,27 @@ |
+<!DOCTYPE html> |
+<head> |
+<title>Performance Paint Timing Test: FCP due to background image</title> |
+</head> |
+<body> |
+ <script src="../../resources/testharness.js"></script> |
+ <script src="../../resources/testharnessreport.js"></script> |
+ <div id="main"></div> |
+</body> |
+<footer> |
+ <script> |
+ async_test(function (t) { |
+ let body = document.getElementsByTagName('body')[0]; |
tdresser
2017/06/12 14:44:45
const
|
+ body.style.backgroundImage = 'url(resources/circles.png)'; |
+ |
+ testRunner.capturePixelsAsyncThen(t.step_func_done(function() { |
+ const bufferedEntries = performance.getEntriesByType('paint'); |
+ assert_equals(bufferedEntries.length, 2, "There should be two paint timing instances."); |
+ assert_equals(bufferedEntries[0].entryType, "paint"); |
+ assert_equals(bufferedEntries[0].name, "first-paint"); |
+ assert_equals(bufferedEntries[1].entryType, "paint"); |
+ assert_equals(bufferedEntries[1].name, "first-contentful-paint"); |
+ })); |
+ }, "First contentful paint fires due to background image render."); |
+ </script> |
+<footer> |
+</html> |