1 files changed, 65 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/pageswap/pageswap-cross-origin.sub.html b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/pageswap/pageswap-cross-origin.sub.html
new file mode 100644
index 0000000000..4b68c32378
--- /dev/null
+++ b/testing/web-platform/tests/html/browsers/browsing-the-web/history-traversal/pageswap/pageswap-cross-origin.sub.html
@@ -0,0 +1,65 @@
+<!DOCTYPE HTML>
+<title>Tests pageswap for cross-origin navigations</title>
+<link rel="author" title="Khushal Sagar"  href="mailto:khushalsagar@chromium.org">
+<link rel="help" href="https://html.spec.whatwg.org/">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script>
+const expectedUrl = get_host_info().HTTPS_REMOTE_ORIGIN + "/html/browsers/browsing-the-web/history-traversal/pageswap/pageswap-cross-origin.sub.html?new";
+
+const params = new URLSearchParams(location.search);
+// The page the popup navigates to.
+const is_new_page = params.has('new');
+// The initial page in the popup.
+const is_popup_page = params.has('popup');
+// The test page itself.
+const is_test_page = !is_popup_page && !is_new_page;
+
+const channel = new BroadcastChannel("testchannel");
+
+if (is_test_page) {
+  const expectedUrl = location.href + "?new";
+  const expectedEvents = ["pageswap", "pagehide"];
+
+  promise_test(async t => {
+    let popup;
+    onload = () => {
+      window.events = [];
+      popup = window.open("?popup");
+    };
+
+    await new Promise(resolve => {
+      channel.addEventListener(
+        "message", t.step_func(async (e) => {
+          if (e.data === "nav") {
+            assert_array_equals(window.events, expectedEvents, 'incorrect event order');
+            popup.close();
+            resolve();
+          }
+      }));
+    });
+  }, `pageswap on navigation from script`);
+} else if (is_popup_page) {
+  onload = () => {
+    requestAnimationFrame(() => requestAnimationFrame(() => {
+      location.href = expectedUrl;
+    }));
+
+    onpageswap = (e) => {
+      window.opener.events.push("pageswap");
+      if (e.activation != null)
+        window.opener.events.push("activation");
+      if (e.viewTransition != null)
+        window.opener.events.push("transition");
+    };
+
+    onpagehide = () => {
+      window.opener.events.push("pagehide");
+      channel.postMessage("nav");
+    };
+  };
+}
+</script>