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 testNullLabelProviderOverrideNone() throws Exception {
		blankLabelProviderOverride(NONE, NULL, "");
	}
	public void testPlainBlankLabelProviderOverrideNone() throws Exception {
		blankLabelProviderOverride(NONE, BLANK, PLAIN);
	}
	public void testPlainNullLabelProviderOverrideNone() throws Exception {
		blankLabelProviderOverride(NONE, NULL, PLAIN);
	}
	public void testBlankLabelProviderOverride1() throws Exception {
		blankLabelProviderOverride(OVERRIDDEN, BLANK, "");
	}
	public void testNullLabelProviderOverride1() throws Exception {
		blankLabelProviderOverride(OVERRIDDEN, NULL, "");
	}
	public void testPlainBlankLabelProviderOverride1() throws Exception {
		blankLabelProviderOverride(OVERRIDDEN, BLANK, PLAIN);
	}
	public void testPlainNullLabelProviderOverride1() throws Exception {
		blankLabelProviderOverride(OVERRIDDEN, NULL, PLAIN);
	}
	public void testBlankLabelProviderOverride2() throws Exception {
		blankLabelProviderOverride(OVERRIDING, BLANK, "");
	}
	public void testNullLabelProviderOverride2() throws Exception {
		blankLabelProviderOverride(OVERRIDING, NULL, "");
	}
	public void testPlainBlankLabelProviderOverride2() throws Exception {
		blankLabelProviderOverride(OVERRIDING, BLANK, PLAIN);