1 files changed, 59 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/download_canceled/page_download_canceled.html b/dom/serviceworkers/test/download_canceled/page_download_canceled.html
new file mode 100644
index 0000000000..dd67709004
--- /dev/null
+++ b/dom/serviceworkers/test/download_canceled/page_download_canceled.html
@@ -0,0 +1,59 @@
+<!--
+  Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+</head>
+<body>
+
+<script src="../utils.js"></script>
+<script type="text/javascript">
+function wait_until_controlled() {
+  return new Promise(function(resolve) {
+    if (navigator.serviceWorker.controller) {
+      resolve('controlled');
+      return;
+    }
+    navigator.serviceWorker.addEventListener('controllerchange', function onController() {
+      if (navigator.serviceWorker.controller) {
+        navigator.serviceWorker.removeEventListener('controllerchange', onController);
+        resolve('controlled');
+      }
+    });
+  });
+}
+addEventListener('load', async function(event) {
+  window.controlled = wait_until_controlled();
+  window.registration =
+    await navigator.serviceWorker.register('sw_download_canceled.js');
+  let sw = registration.installing || registration.waiting ||
+           registration.active;
+  await waitForState(sw, 'activated');
+  sw.postMessage('claim');
+});
+
+// Place to hold promises for stream closures reported by the SW.
+window.streamClosed = {};
+
+// The ServiceWorker will postMessage to this BroadcastChannel when the streams
+// are closed.  (Alternately, the SW could have used the clients API to post at
+// us, but the mechanism by which that operates would be different when this
+// test is uplifted, and it's desirable to avoid timing changes.)
+//
+// The browser test will use this promise to wait on stream shutdown.
+window.swStreamChannel = new BroadcastChannel("stream-closed");
+function trackStreamClosure(path) {
+  let resolve;
+  const promise = new Promise(r => { resolve = r });
+  window.streamClosed[path] = { promise, resolve };
+}
+window.swStreamChannel.onmessage = ({ data }) => {
+  window.streamClosed[data.what].resolve(data);
+};
+</script>
+
+</body>
+</html>