1 files changed, 56 insertions, 0 deletions
diff --git a/testing/web-platform/tests/performance-timeline/tentative/include-frames-two-local-children.html b/testing/web-platform/tests/performance-timeline/tentative/include-frames-two-local-children.html
new file mode 100644
index 0000000000..01d4844522
--- /dev/null
+++ b/testing/web-platform/tests/performance-timeline/tentative/include-frames-two-local-children.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<head>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+</body>
+<script>
+promise_test(() => {
+    return new Promise(resolve => {
+        performance.clearResourceTimings()
+
+        let childFrameOneLoaded = false
+        let childFrameTwoLoaded = false
+
+        // Create first child iframe.
+        const childFrameOne = document.createElement('iframe')
+        childFrameOne.src = "../resources/child-frame.html"
+        document.body.appendChild(childFrameOne)
+
+        childFrameOne.addEventListener("load", () => {
+            childFrameOneLoaded = true
+            if (childFrameTwoLoaded)
+                verifyPerformanceEntries()
+        })
+
+        // Create second child iframe.
+        const childFrameTwo = document.createElement('iframe')
+        childFrameTwo.src = "../resources/child-frame.html"
+        document.body.appendChild(childFrameTwo)
+
+        childFrameTwo.addEventListener("load", () => {
+            childFrameTwoLoaded = true
+            if (childFrameOneLoaded)
+                verifyPerformanceEntries()
+        })
+
+        function verifyPerformanceEntries() {
+            const entries = performance.getEntries(true)
+            const navigationEntries = performance.getEntriesByType("navigation", true)
+            const markedEntries = performance.getEntriesByName("entry-name", undefined, true)
+
+            // 4 entries for parent, 2 for each child
+            assert_equals(entries.length, 8)
+
+            // 1 entry for parent, 1 for each child.
+            assert_equals(navigationEntries.length, 3)
+
+            // 1 entry for each child.
+            assert_equals(markedEntries.length, 2)
+
+            resolve()
+        }
+    })
+}, "GetEntries of a parent Frame with two Same-Origin children")
+</script>
+\ No newline at end of file