1 files changed, 32 insertions, 0 deletions
diff --git a/testing/web-platform/tests/paint-timing/fcp-only/fcp-pseudo-element-opacity.html b/testing/web-platform/tests/paint-timing/fcp-only/fcp-pseudo-element-opacity.html
new file mode 100644
index 0000000000..b209864d5d
--- /dev/null
+++ b/testing/web-platform/tests/paint-timing/fcp-only/fcp-pseudo-element-opacity.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<head>
+<title>Performance Paint Timing Test: FCP due to pseudo-element getting positive opacity</title>
+<style>
+    #main {
+        position: relative;
+        width: 100px;
+        height: 100px;
+    }
+
+    #main:after {
+        content: "TEXT";
+        opacity: 0;
+    }
+
+    /* contentful class is defined in test_fcp script. */
+    #main.contentful:after {
+        opacity: 0.5;
+    }
+</style>
+</head>
+<body>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../resources/utils.js"></script>
+<div id="main">
+</div>
+<script>
+    test_fcp("First contentful paint fires due to pseudo-element getting positive opacity.")
+</script>
+</body>
+</html>