Updating OpenCloseTest to JUnit5

Adding jupiter API to MANIFEST.MF
Migrating OpenCloseTest to JUnit5

Author: vogella

tests/org.eclipse.ui.tests/Eclipse UI Tests/org/eclipse/ui/tests/stress/OpenCloseTest.java

@@ -13,7 +13,8 @@
  *******************************************************************************/
 package org.eclipse.ui.tests.stress;
 
-import static org.junit.Assert.assertNotNull;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 import java.util.HashMap;
 
@@ -41,8 +42,8 @@
 import org.eclipse.ui.intro.IIntroPart;
 import org.eclipse.ui.part.FileEditorInput;
 import org.eclipse.ui.tests.harness.util.FileUtil;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 /**
  * Test opening and closing of items.
@@ -57,7 +58,7 @@ public class OpenCloseTest {
 	private IWorkbenchPage page;
 
 
-	@Before
+	@BeforeEach
 	public void setup() {
 		workbench = PlatformUI.getWorkbench();
 		workbenchWindow = PlatformUI.getWorkbench().getActiveWorkbenchWindow();

tests/org.eclipse.ui.tests/META-INF/MANIFEST.MF

@@ -9,7 +9,6 @@ Bundle-Vendor: Eclipse.org
 Require-Bundle: org.eclipse.core.resources;bundle-version="3.14.0",
  org.eclipse.core.expressions;bundle-version="3.7.0",
  org.eclipse.ui,
- org.junit,
  org.eclipse.ui.ide,
  org.eclipse.ui.editors,
  org.eclipse.ui.workbench.texteditor,
@@ -43,9 +42,11 @@ Require-Bundle: org.eclipse.core.resources;bundle-version="3.14.0",
  org.eclipse.ui.navigator;bundle-version="3.12.100",
  org.eclipse.search,
  org.eclipse.debug.ui,
- org.eclipse.emf.ecore
+ org.eclipse.emf.ecore,
+ org.junit;bundle-version="4.13.2"
 Import-Package: jakarta.annotation,
  jakarta.inject,
+ org.junit.jupiter.api;version="[5.11.0,6.0.0)",
  org.osgi.service.event
 Eclipse-AutoStart: true
 Export-Package: org.eclipse.ui.tests.api,