Bug 166600 [DataBinding] Refactor tests to be in the correct packages
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/ObservableTest.java
int count;
        IObservable source;
        
        /* (non-Javadoc)
         * @see org.eclipse.jface.databinding.observable.IChangeListener#handleChange(org.eclipse.jface.databinding.observable.IObservable)
         */
        public void handleChange(ChangeEvent event) {
            count++;