1 files changed, 43 insertions, 0 deletions
diff --git a/testing/web-platform/tests/paint-timing/with-first-paint/first-contentful-bg-image.html b/testing/web-platform/tests/paint-timing/with-first-paint/first-contentful-bg-image.html
new file mode 100644
index 0000000000..40eaa635bb
--- /dev/null
+++ b/testing/web-platform/tests/paint-timing/with-first-paint/first-contentful-bg-image.html
@@ -0,0 +1,43 @@
+<!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>
+setup({"hide_test_state": true});
+async_test(function (t) {
+    assert_implements(window.PerformancePaintTiming, "Paint Timing isn't supported.");
+    const body = document.getElementsByTagName('body')[0];
+    body.style.backgroundImage = 'url(../resources/circles.png)';
+    window.onload = function() {
+        function testPaintEntries() {
+            const bufferedEntries = performance.getEntriesByType('paint');
+            if (bufferedEntries.length < 2) {
+                t.step_timeout(function() {
+                    testPaintEntries();
+                }, 20);
+                return;
+            }
+            t.step(function() {
+                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");
+                t.done();
+            });
+        }
+        t.step(function() {
+            testPaintEntries();
+        });
+    };
+}, "First contentful paint fires due to background image render.");
+</script>
+<footer>
+</html>