1 files changed, 27 insertions, 4 deletions
diff --git a/tests/wpt/web-platform-tests/background-fetch/fetch-uploads.https.window.js b/tests/wpt/web-platform-tests/background-fetch/fetch-uploads.https.window.js
index c53b2996645..4ee618a1292 100644
--- a/tests/wpt/web-platform-tests/background-fetch/fetch-uploads.https.window.js
+++ b/tests/wpt/web-platform-tests/background-fetch/fetch-uploads.https.window.js
@@ -9,15 +9,38 @@
 backgroundFetchTest(async (test, backgroundFetch) => {
   const uploadData = 'Background Fetch!';
   const request =
-    new Request('resources/upload.py', {method: 'POST', body: uploadData});
+      new Request('resources/upload.py', {method: 'POST', body: uploadData});
 
-  await backgroundFetch.fetch(uniqueId(), request);
-  const {type, eventRegistration, results} = await getMessageFromServiceWorker();
+  const registration = await backgroundFetch.fetch(uniqueId(), request);
+  assert_equals(registration.uploadTotal, uploadData.length);
 
+  const {type, eventRegistration, results} = await getMessageFromServiceWorker();
   assert_equals(type, 'backgroundfetchsuccess');
   assert_equals(results.length, 1);
   assert_equals(eventRegistration.result, 'success');
   assert_equals(eventRegistration.failureReason, '');
+  assert_equals(eventRegistration.uploaded, uploadData.length);
   assert_equals(results[0].text, uploadData);
+}, 'Fetch with an upload should work');
+
+backgroundFetchTest(async (test, backgroundFetch) => {
+  const uploadData = 'Background Fetch!';
+  const uploadRequest =
+      new Request('resources/upload.py', {method: 'POST', body: uploadData});
+
+  const registration = await backgroundFetch.fetch(
+      uniqueId(),
+      [uploadRequest, '/common/slow.py']);
+
+    const uploaded = await new Promise(resolve => {
+      registration.onprogress = event => {
+        if (event.target.downloaded === 0)
+          return;
+        // If a progress event with downloaded bytes was received, then
+        // everything was uploaded.
+        resolve(event.target.uploaded);
+      };
+    });
 
-}, 'Fetch with an upload should work');
-\ No newline at end of file
+  assert_equals(uploaded, uploadData.length);
+}, 'Progress event includes uploaded bytes');