Bug 327044 EPartService's hidePart(*) should unset the part's parent element if the part is the selected element
It is not valid to have a selected element that's TBR flag is 'false'.
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
applicationContext.set(ISaveHandler.class.getName(), null);
		EPartService partService = (EPartService) window.getContext().get(
				EPartService.class.getName());
		if (beforeDirty) {
			assertEquals(!throwException,
					partService.savePart(saveablePart, confirm));
		} else {
			assertTrue(
					"The part is not dirty, the save operation should have complete successfully",
					partService.savePart(saveablePart, confirm));
		}
		assertEquals(beforeDirty && throwException, saveablePart.isDirty());
		assertEquals(beforeDirty, editor.wasSaveCalled());
	}
	public void testSavePart_NoHandler_TTT() {
		testSavePart_NoHandler(true, true, true);
	}
	public void testSavePart_NoHandler_TTF() {
		testSavePart_NoHandler(true, true, false);
	}
	public void testSavePart_NoHandler_TFT() {
		testSavePart_NoHandler(true, false, true);
	}
	public void testSavePart_NoHandler_TFF() {
		testSavePart_NoHandler(true, false, false);
	}
	public void testSavePart_NoHandler_FTT() {
		testSavePart_NoHandler(false, true, true);
	}