Bug 169637 [DataBinding] Multiple validation statuses per binding
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/internal/databinding/internal/ValueBindingTest.java
/**
	 * Bug 152543.
	 * 
	 * @throws Exception
	 */
	public void testNoUpdateTargetFromModel() throws Exception {
		try {
			new DataBindingContext().bindValue(new ObservableValueStub(),
					new ObservableValueStub(), new UpdateValueStrategy(
							UpdateValueStrategy.POLICY_NEVER),
					new UpdateValueStrategy(UpdateValueStrategy.POLICY_NEVER));
		} catch (Exception e) {
			fail(e.getMessage());
		}
	}
	public void testValuePropagation() throws Exception {
		String initialValue = "value";
		WritableValue target = new WritableValue(null, String.class);
		WritableValue model = new WritableValue(initialValue, String.class);
		DataBindingContext dbc = new DataBindingContext();
		assertFalse(model.getValue().equals(target.getValue()));
		dbc.bindValue(target, model, null, null);