Bug 315281 update copyrights for 3.6
tests/org.eclipse.ui.tests.navigator/src/org/eclipse/ui/tests/navigator/OpenTest.java
updateFilters.execute(null, null);
		
		refreshViewer();
		_viewer.expandAll();
		TreeItem[] items = _viewer.getTree().getItems();
		assertTrue("There should be some items.", items.length > 0); 		
		assertEquals(_project, items[_projectInd].getData());
		
		_viewer
				.setSelection(new StructuredSelection(_project
						.getFile(".project"))); 
		TreeItem[] children = items[_projectInd].getItems();
		assertEquals(_expectedChildren.size(), children.length);
		for (int i = 0; i < children.length; i++) {
			assertTrue(_expectedChildren.contains(children[i].getData()));
		}
	}
	public void testNavigatorExtensionEnablement() throws Exception { 
		_contentService.getActivationService().activateExtensions(new String[] {}, true);
		refreshViewer();
		_viewer.expandAll();
		TreeItem[] items = _viewer.getTree().getItems();
		assertTrue("There should be NO items.", items.length == 0); 
		_contentService.getActivationService().deactivateExtensions(new String[] {}, true);
		_viewer.expandToLevel(2);
		items = _viewer.getTree().getItems();
		assertTrue("There should be some items.", items.length > 0); 
	}
}