1 files changed, 75 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/fetch-later/new-window.tentative.https.window.js b/testing/web-platform/tests/fetch/fetch-later/new-window.tentative.https.window.js
new file mode 100644
index 0000000000..93705418f2
--- /dev/null
+++ b/testing/web-platform/tests/fetch/fetch-later/new-window.tentative.https.window.js
@@ -0,0 +1,75 @@
+// META: script=/common/utils.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/pending-beacon/resources/pending_beacon-helper.js
+
+'use strict';
+
+const {
+  HTTPS_ORIGIN,
+  HTTPS_NOTSAMESITE_ORIGIN,
+} = get_host_info();
+
+function fetchLaterPopupUrl(host, targetUrl) {
+  return `${host}/fetch/fetch-later/resources/fetch-later.html?url=${
+      encodeURIComponent(targetUrl)}`;
+}
+
+for (const target of ['', '_blank']) {
+  for (const features in ['', 'popup', 'popup,noopener']) {
+    parallelPromiseTest(
+        async t => {
+          const uuid = token();
+          const url =
+              generateSetBeaconURL(uuid, {host: HTTPS_NOTSAMESITE_ORIGIN});
+
+          // Opens a blank popup window that fires a fetchLater request.
+          const w = window.open(
+              `javascript: fetchLater("${url}", {activateAfter: 0})`, target,
+              features);
+          await new Promise(resolve => w.addEventListener('load', resolve));
+
+          // The popup should have sent the request.
+          await expectBeacon(uuid, {count: 1});
+          w.close();
+        },
+        `A blank window[target='${target}'][features='${
+            features}'] can trigger fetchLater.`);
+
+    parallelPromiseTest(
+        async t => {
+          const uuid = token();
+          const popupUrl =
+              fetchLaterPopupUrl(HTTPS_ORIGIN, generateSetBeaconURL(uuid));
+
+          // Opens a same-origin popup that fires a fetchLater request.
+          const w = window.open(popupUrl, target, features);
+          await new Promise(resolve => w.addEventListener('load', resolve));
+
+          // The popup should have sent the request.
+          await expectBeacon(uuid, {count: 1});
+          w.close();
+        },
+        `A same-origin window[target='${target}'][features='${
+            features}'] can trigger fetchLater.`);
+
+    parallelPromiseTest(
+        async t => {
+          const uuid = token();
+          const popupUrl = fetchLaterPopupUrl(
+              HTTPS_NOTSAMESITE_ORIGIN, generateSetBeaconURL(uuid));
+
+          // Opens a cross-origin popup that fires a fetchLater request.
+          const w = window.open(popupUrl, target, features);
+          // As events from cross-origin window is not accessible, waiting for
+          // its message instead.
+          await new Promise(
+              resolve => window.addEventListener('message', resolve));
+
+          // The popup should have sent the request.
+          await expectBeacon(uuid, {count: 1});
+          w.close();
+        },
+        `A cross-origin window[target='${target}'][features='${
+            features}'] can trigger fetchLater.`);
+  }
+}