Bug 327980 Part activation history should not be perspective-dependent
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
assertEquals(partA, partService.getActivePart());
	}
	public void testHidePart_ActivationHistory14() {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window);
		application.setSelectedElement(window);
		MPart partA = BasicFactoryImpl.eINSTANCE.createPart();
		window.getSharedElements().add(partA);
		MPart partB = BasicFactoryImpl.eINSTANCE.createPart();
		window.getSharedElements().add(partB);
		MPart partC = BasicFactoryImpl.eINSTANCE.createPart();
		window.getSharedElements().add(partC);
		MPerspectiveStack perspectiveStack = AdvancedFactoryImpl.eINSTANCE
				.createPerspectiveStack();
		window.getChildren().add(perspectiveStack);
		window.setSelectedElement(perspectiveStack);
		MPerspective perspectiveA = AdvancedFactoryImpl.eINSTANCE
				.createPerspective();
		perspectiveStack.getChildren().add(perspectiveA);
		perspectiveStack.setSelectedElement(perspectiveA);
		MPlaceholder placeholderC1 = AdvancedFactoryImpl.eINSTANCE
				.createPlaceholder();
		placeholderC1.setRef(partC);
		partC.setCurSharedRef(placeholderC1);
		perspectiveA.getChildren().add(placeholderC1);
		perspectiveA.setSelectedElement(placeholderC1);
		MPerspective perspectiveB = AdvancedFactoryImpl.eINSTANCE
				.createPerspective();