8314266: Several test failures after fix for JDK-8159048

Reviewed-by: kcr

Author: Jose Pereda

modules/javafx.web/src/test/java/test/javafx/scene/web/LeakTest.java

@@ -34,6 +34,7 @@
 import java.util.concurrent.CountDownLatch;
 import javafx.animation.KeyFrame;
 import javafx.animation.Timeline;
+import javafx.application.Platform;
 import javafx.concurrent.Worker.State;
 import javafx.event.ActionEvent;
 import javafx.event.EventHandler;
@@ -74,7 +75,7 @@ public class LeakTest extends TestBase {
                 }
             }
         }));
-        time.play();
+        Platform.runLater(time::play);
         latch.await();
     }
 

tests/system/src/test/java/test/javafx/application/PlatformTest.java

@@ -120,7 +120,7 @@ public void testCanNotStartNestedEventLoopInTimeline() {
                 timelineDone.countDown();
             }
         }));
-        timeline.play();
+        Platform.runLater(timeline::play);
 
         Util.await(timelineDone);
 

tests/system/src/test/java/test/javafx/stage/ShowAndWaitTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -683,7 +683,7 @@ public void testTimeline() throws Throwable {
             animationDone.countDown();
         });
         Timeline timeline = new Timeline(kf);
-        timeline.play();
+        Platform.runLater(timeline::play);
 
         try {
             if (!animationDone.await(TIMEOUT, TimeUnit.MILLISECONDS)) {
@@ -733,7 +733,7 @@ public void testTimelineDialog() throws Throwable {
             animationDone.countDown();
         });
         Timeline timeline = new Timeline(kf);
-        timeline.play();
+        Platform.runLater(timeline::play);
 
         try {
             if (!animationDone.await(TIMEOUT, TimeUnit.MILLISECONDS)) {
@@ -788,7 +788,7 @@ public void testTimelinePrint() throws Throwable {
             animationDone.countDown();
         });
         Timeline timeline = new Timeline(kf);
-        timeline.play();
+        Platform.runLater(timeline::play);
 
         try {
             if (!animationDone.await(TIMEOUT, TimeUnit.MILLISECONDS)) {