REGRESSION(286686@main?): [macOS] http/tests/workers/service/shownotification-allowed.html is a constant failure (flaky in EWS)

rdar://140875944
https://bugs.webkit.org/show_bug.cgi?id=283999

Reviewed by Chris Dumez.

http/tests/workers/service/shownotification-allowed.html was failing as we were:
- stopping the service worker due to network process crash
- recreating the service worker, but in a different process from the web page
- sending a message to the web page via self.clients
- But the web page is not reregistering it as a service worker client since it does not create a new connection to the network process.

To fix this, we make sure the web page recreates a connection to the network process and we make sure the service worker loops until it can send the message to at least one client.

* LayoutTests/http/tests/workers/service/resources/shownotification-worker.js:
(let.messageClients):
* LayoutTests/http/tests/workers/service/shownotification-allowed.html:
* LayoutTests/platform/mac-wk2/TestExpectations:

Canonical link: https://commits.webkit.org/287520@main

Author: youennf

LayoutTests/http/tests/workers/service/resources/shownotification-worker.js

@@ -4,6 +4,11 @@ let messageClients = async function(msg) {
         includeUncontrolled: true
     });
 
+    if (!allClients.length) {
+        await new Promise(resolve => setTimeout(resolve, 50));
+        return messageClients(msg);
+    }
+
     for (const client of allClients)
         client.postMessage(msg);
 }

LayoutTests/http/tests/workers/service/shownotification-allowed.html

@@ -54,6 +54,9 @@
             await internals.storeRegistrationsOnDisk();
         if (window.testRunner)
             testRunner.terminateNetworkProcess();
+        // After a network process crash, we do a fetch to register as a service worker client to the new network process.
+        await fetch("").then(() => { }, () => { });
+        await fetch("").then(() => { }, () => { });
 
         if (testRunner)
             testRunner.simulateWebNotificationClickForServiceWorkerNotifications();

LayoutTests/platform/mac-wk2/TestExpectations

@@ -1344,19 +1344,19 @@ webkit.org/b/240821 webgl/max-active-contexts-webglcontextlost-prevent-default.h
 
 webkit.org/b/241265 [ Debug ] imported/w3c/web-platform-tests/html/rendering/replaced-elements/svg-embedded-sizing/svg-in-object-percentage.html [ Pass Crash ]
 
-# NOTIFICATION_EVENT is Ventura+
-[ Ventura+ ] http/tests/workers/service/shownotification-allowed-document.html [ Pass ]
-[ Ventura+ ] http/tests/workers/service/shownotification-invalid-data.html [ Pass ]
-[ Ventura+ ] http/wpt/push-api/pushEvent.any.serviceworker.html [ Pass ]
-[ Ventura+ ] imported/w3c/web-platform-tests/notifications/idlharness.https.any.html [ Pass ]
-[ Ventura+ ] imported/w3c/web-platform-tests/notifications/idlharness.https.any.serviceworker.html [ Pass ]
-[ Ventura+ ] imported/w3c/web-platform-tests/notifications/idlharness.https.any.worker.html [ Pass ]
-[ Ventura+ ] http/tests/workers/service/getnotifications-stop.html [ Pass ]
-[ Ventura+ ] http/tests/workers/service/getnotifications.html [ Pass ]
-[ Ventura+ ] http/wpt/service-workers/push-console-messages-no-showNotification.https.html [ Pass ]
-[ Ventura+ ] http/wpt/service-workers/push-console-messages-showNotification-async.https.html [ Pass ]
-[ Ventura+ ] http/wpt/service-workers/push-console-messages-showNotification-late.https.html [ Pass ]
-[ Ventura+ ] http/wpt/service-workers/push-console-messages-showNotification-sync.https.html [ Pass ]
+http/tests/workers/service/shownotification-allowed-document.html [ Pass ]
+http/tests/workers/service/shownotification-allowed.html [ Pass ]
+http/tests/workers/service/shownotification-invalid-data.html [ Pass ]
+http/wpt/push-api/pushEvent.any.serviceworker.html [ Pass ]
+imported/w3c/web-platform-tests/notifications/idlharness.https.any.html [ Pass ]
+imported/w3c/web-platform-tests/notifications/idlharness.https.any.serviceworker.html [ Pass ]
+imported/w3c/web-platform-tests/notifications/idlharness.https.any.worker.html [ Pass ]
+http/tests/workers/service/getnotifications-stop.html [ Pass ]
+http/tests/workers/service/getnotifications.html [ Pass ]
+http/wpt/service-workers/push-console-messages-no-showNotification.https.html [ Pass ]
+http/wpt/service-workers/push-console-messages-showNotification-async.https.html [ Pass ]
+http/wpt/service-workers/push-console-messages-showNotification-late.https.html [ Pass ]
+http/wpt/service-workers/push-console-messages-showNotification-sync.https.html [ Pass ]
 
 webkit.org/b/242164 imported/w3c/web-platform-tests/service-workers/service-worker/navigation-timing.https.html [ Failure ]
 
@@ -1936,9 +1936,6 @@ webkit.org/b/283210 http/wpt/mediarecorder/MediaRecorder-AV-audio-video-dataavai
 
 webkit.org/b/283596 [ Sequoia+ Debug ] ipc/cfnetwork-crashes-with-string-to-string-http-headers.html [ Skip ]
 
-# webkit.org/b/283999 REGRESSION(286110@main?): [macOS] http/tests/workers/service/shownotification-allowed.html is a constant failure (flaky in EWS) 
-[ Ventura+ ] http/tests/workers/service/shownotification-allowed.html [ Failure ]
-
 # webkit.org/b/284113 REGRESSION(287390@main?): [macOS Release] 4x imported/w3c/web-platform-tests/fs tests are flaky (Failure in EWS)
 [ Release ] imported/w3c/web-platform-tests/fs/FileSystemBaseHandle-postMessage-Error.https.window.html [ Pass Failure ]
 [ Release ] imported/w3c/web-platform-tests/fs/FileSystemFileHandle-getFile.https.any.worker.html [ Pass Failure ]