Bug 266769 [CommonNavigator] Reorg test identifiers
tests/org.eclipse.ui.tests.navigator/src/org/eclipse/ui/tests/navigator/DnDTest.java
public DnDTest() {
		_navigatorInstanceId = TEST_VIEWER;
	}
	protected void setUp() throws Exception {
		super.setUp();
	}
	protected void tearDown() throws Exception {
		super.tearDown();
	}
	public void testBasicDragDrop() throws Exception {
		_viewer.expandToLevel(_p1, 3);