Bug 299340 [CommonNavigator] Enable new CNF tests
Enable the contributed CNF tests, make minor test improvements.
tests/org.eclipse.ui.tests.navigator/src/org/eclipse/ui/tests/navigator/LabelProviderTest.java
}
	public void testPlainNullLabelProviderOverride2() throws Exception {
		blankLabelProviderOverride(OVERRIDING, NULL, PLAIN);
	}
	public void testBlankLabelProviderBoth() throws Exception {
		blankLabelProviderOverride(BOTH, BLANK, "");
	}
	public void testNullLabelProviderBoth() throws Exception {
		blankLabelProviderOverride(BOTH, NULL, "");
	}
	public void testPlainBlankLabelProviderBoth() throws Exception {
		blankLabelProviderOverride(BOTH, BLANK, PLAIN);
	}
	public void testPlainNullLabelProviderBoth() throws Exception {
		blankLabelProviderOverride(BOTH, NULL, PLAIN);
	}
	private void checkItemsAll(TreeItem[] rootItems, TestLabelProvider tlp) {
		if (!rootItems[0].getText().startsWith(tlp.getColorName()))
			fail("Wrong text: " + rootItems[0].getText());
		checkItems(rootItems, tlp);
	}
	private void checkItems(TreeItem[] rootItems, TestLabelProvider tlp) {
		assertEquals(tlp.backgroundColor, rootItems[0].getBackground(0));
		assertEquals(TestLabelProvider.toForegroundColor(tlp.backgroundColor),
				rootItems[0].getForeground(0));
		assertEquals(tlp.font, rootItems[0].getFont(0));
		assertEquals(tlp.image, rootItems[0].getImage(0));
	}
	
	public void testSimpleResFirst() throws Exception {