Bug 305389 EclipsePartService: Add getInputParts(String inputUri): Collection
Add support for the new InputPart-Type with Input-URI
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
application.getChildren().add(windowB);
		application.setSelectedElement(windowA);
		MPartStack stack = MApplicationFactory.eINSTANCE.createPartStack();
		windowB.getChildren().add(stack);
		windowB.setSelectedElement(stack);
		MPart partA = MApplicationFactory.eINSTANCE.createPart();
		MPart partB = MApplicationFactory.eINSTANCE.createPart();
		stack.getChildren().add(partA);
		stack.getChildren().add(partB);
		stack.setSelectedElement(partA);
		initialize(applicationContext, application);
		getEngine().createGui(windowA);
		getEngine().createGui(windowB);
		EPartService partServiceA = (EPartService) windowA.getContext().get(
				EPartService.class.getName());
		EPartService partServiceB = (EPartService) windowB.getContext().get(
				EPartService.class.getName());
		PartListener partListener = new PartListener();
		partServiceA.addPartListener(partListener);
		partServiceB.activate(partB);
		assertEquals(0, partListener.getActivated());
		assertEquals(0, partListener.getActivatedParts().size());
		assertTrue(partListener.isValid());
		partListener.clear();
		partServiceB.activate(partA);
		assertEquals(0, partListener.getActivated());
		assertEquals(0, partListener.getActivatedParts().size());
		assertTrue(partListener.isValid());
	}
	public void testEvent_PartDeactivated() {