Bug 239015 [Databinding] ObservableListTreeContentProvider adds the value passed to TreeViewer#setInput() to the known-elements
The input element is never shown in the viewer so it should no get part of the knownElements further more it restricts the usability of the content-provider because the input-element itself already has to provide the required Observable-Attribute(s).
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/BindingTestSuite.java
addTestSuite(StringToByteValidatorTest.class);
		addTestSuite(StringToCharacterValidatorTest.class);
		addTestSuite(StringToDoubleValidatorTest.class);
		addTestSuite(StringToFloatValidatorTest.class);
		addTestSuite(StringToIntegerValidatorTest.class);
		addTestSuite(StringToLongValidatorTest.class);
		addTestSuite(StringToShortValidatorTest.class);
		
		addTest(BindingScenariosTestSuite.suite());
		
		
		addTestSuite(SWTObservablesTest.class);
		
		
		addTestSuite(ObservableListTreeContentProviderTest.class);
		addTestSuite(ObservableMapLabelProviderTest.class);
		addTestSuite(ObservableSetContentProviderTest.class);
		addTestSuite(ObservableSetTreeContentProviderTest.class);
		addTestSuite(ViewersObservablesTest.class);
		
		
		addTestSuite(EditMaskLexerAndTokenTest.class);
		addTestSuite(EditMaskParserTest.class);
		
		addTest(ButtonObservableValueTest.suite());
		addTestSuite(CComboObservableValueTest.class);
		addTest(CComboObservableValueSelectionTest.suite());
		addTest(CComboObservableValueTextTest.suite());
		addTestSuite(CComboSingleSelectionObservableValueTest.class);
		addTest(CComboSingleSelectionObservableValueTest.suite());