1 files changed, 110 insertions, 0 deletions
diff --git a/testing/web-platform/tests/resource-timing/resources/nested-contexts.js b/testing/web-platform/tests/resource-timing/resources/nested-contexts.js
new file mode 100644
index 0000000000..c0822943e8
--- /dev/null
+++ b/testing/web-platform/tests/resource-timing/resources/nested-contexts.js
@@ -0,0 +1,110 @@
+let destination = location;
+
+if (location.search == "?cross-site") {
+    const https = destination.protocol.startsWith("https");
+    destination = get_host_info()[https ? 'HTTPS_NOTSAMESITE_ORIGIN' : 'HTTP_NOTSAMESITE_ORIGIN'];
+} else if (location.search == "?crossorigin") {
+    destination =  get_host_info().REMOTE_ORIGIN;
+}
+
+const pre_navigate_url =
+  new URL("/resource-timing/resources/document-that-navigates.html",
+    destination).href;
+const post_navigate_url =
+  new URL("/resource-timing/resources/document-navigated.html",
+    destination).href;
+const pre_refresh_url =
+  new URL("/resource-timing/resources/document-that-refreshes.html",
+    destination).href;
+const post_refresh_url =
+  new URL("/resource-timing/resources/document-refreshed.html",
+    destination).href;
+
+const setup_navigate_or_refresh = (type, pre, post) => {
+  const verify_document_navigate_not_observable = () => {
+    const entries = performance.getEntriesByType("resource");
+    let found_first_document = false;
+    for (entry of entries) {
+      if (entry.name == pre) {
+        found_first_document = true;
+      }
+      if (entry.name == post) {
+        opener.postMessage(`FAIL - ${type} document should not be observable`,
+          `*`);
+        return;
+      }
+    }
+    if (!found_first_document) {
+      opener.postMessage("FAIL - initial document should be observable", "*");
+      return;
+    }
+    opener.postMessage("PASS", "*");
+  }
+  window.addEventListener("message", e => {
+    if (e.data == type) {
+      verify_document_navigate_not_observable();
+    }
+  });
+}
+
+const setup_navigate_test = () => {
+  setup_navigate_or_refresh("navigated", pre_navigate_url, post_navigate_url);
+}
+
+const setup_refresh_test = () => {
+  setup_navigate_or_refresh("refreshed", pre_refresh_url, post_refresh_url);
+}
+
+const setup_back_navigation = pushed_url => {
+  const verify_document_navigate_not_observable = navigated_back => {
+    const entries = performance.getEntriesByType("resource");
+    let found_first_document = false;
+    for (entry of entries) {
+      if (entry.name == pre_navigate_url) {
+        found_first_document = true;
+      }
+      if (entry.name == post_navigate_url) {
+        opener.postMessage("FAIL - navigated document exposed", "*");
+        return;
+      }
+    }
+    if (!found_first_document) {
+      opener.postMessage(`FAIL - first document not exposed. navigated_back ` +
+        `is ${navigated_back}`, "*");
+      return;
+    }
+    if (navigated_back) {
+      opener.postMessage("PASS", "*");
+    }
+  }
+  window.addEventListener("message", e => {
+    if (e.data == "navigated") {
+      verify_document_navigate_not_observable(sessionStorage.navigated);
+      if (sessionStorage.navigated) {
+        delete sessionStorage.navigated;
+      } else {
+        sessionStorage.navigated = true;
+        setTimeout(() => {
+          history.pushState({}, "", pushed_url);
+          location.href="navigate_back.html";
+        }, 0);
+      }
+    }
+  });
+}
+
+const open_test_window = (url, message) => {
+  promise_test(() => {
+    return new Promise((resolve, reject) => {
+      const openee = window.open(url);
+      addEventListener("message", e => {
+        openee.close();
+        if (e.data == "PASS") {
+          resolve();
+        } else {
+          reject(e.data);
+        }
+      });
+    });
+  }, message);
+}