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
assertEquals(force, !perspective.getChildren().contains(placeholder));
	}
	public void testHidePart_Bug325148_True() {
		testHidePart_Bug325148(true);
	}
	public void testHidePart_Bug325148_False() {
		testHidePart_Bug325148(false);
	}
	private void testHidePart_Bug325148_Unrendered(boolean force) {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MPartDescriptor partDescriptor = org.eclipse.e4.ui.model.application.descriptor.basic.impl.BasicFactoryImpl.eINSTANCE
				.createPartDescriptor();
		partDescriptor.setElementId("partId");
		partDescriptor.setCategory("category");
		application.getDescriptors().add(partDescriptor);
		final MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window);
		application.setSelectedElement(window);
		
		MPartStack stack = BasicFactoryImpl.eINSTANCE.createPartStack();
		stack.setElementId("category");
		window.getChildren().add(stack);
		window.setSelectedElement(stack);
		MPart partA = BasicFactoryImpl.eINSTANCE.createPart();
		stack.getChildren().add(partA);
		stack.setSelectedElement(partA);
		MPart partB = BasicFactoryImpl.eINSTANCE.createPart();
		partB.setToBeRendered(false);
		stack.getChildren().add(partB);