Bug 327026 [Compatibility] NPE thrown when reopening an editor after moving a view into the shared area
1. Open an editor. 2. Move the 'Problems' view into the shared area. 3. Close the 'Problems' view. 4. Close the editor. 5. Reopen the same file from step 1. 6. An NPE is thrown. java.lang.NullPointerException at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.getParentWithContext(PartServiceImpl.java:224) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.internalFixContext(PartServiceImpl.java:272) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:248) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:742) at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:795) at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2206) at org.eclipse.ui.internal.WorkbenchPage.access$14(WorkbenchPage.java:2173) at org.eclipse.ui.internal.WorkbenchPage$6.run(WorkbenchPage.java:2155) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2151) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2135) at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2126) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:651) at org.eclipse.ui.ide.IDE.openEditor(IDE.java:610) at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:354) at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:164) at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:219)
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
application.setSelectedElement(windowA);
		MPart partA = BasicFactoryImpl.eINSTANCE.createPart();
		windowA.getChildren().add(partA);
		MWindow windowB = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(windowB);
		MPart partB = BasicFactoryImpl.eINSTANCE.createPart();
		windowB.getChildren().add(partB);
		initialize(applicationContext, application);
		getEngine().createGui(windowA);
		getEngine().createGui(windowB);
		EPartService applicationPartService = application.getContext().get(
				EPartService.class);
		EPartService windowPartServiceA = windowA.getContext().get(
				EPartService.class);
		EPartService windowPartServiceB = windowB.getContext().get(
				EPartService.class);
		windowPartServiceA.activate(partA);
		assertEquals(partA, applicationPartService.getActivePart());
		assertEquals(partA, windowPartServiceA.getActivePart());
		assertEquals(partB, windowPartServiceB.getActivePart());
		windowPartServiceB.activate(partB);
		assertEquals(partB, applicationPartService.getActivePart());
		assertEquals(partA, windowPartServiceA.getActivePart());
		assertEquals(partB, windowPartServiceB.getActivePart());
	}
	public void testIsPartVisible_NotInStack(boolean selected, boolean visible) {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window);