* Test the method removePropertyChangeListener(PropertyChangeListener, * String) when a listener for the named property has been registered. */ public void testRemovePropertyChangeListener_PropertyChangeListener_String_PropertyRegistered() { Object src = new Object(); PropertyChangeSupport sup = new PropertyChangeSupport(src); PropertyChangeListener l1 = new MockPropertyChangeListener(); sup.addPropertyChangeListener("myProp", l1); assertEquals(1, sup.getPropertyChangeListeners().length); sup.removePropertyChangeListener("myProp", l1); assertEquals(0, sup.getPropertyChangeListeners().length); assertEquals(0, sup.getPropertyChangeListeners("myProp").length); PropertyChangeListener l2 = new MockPropertyChangeListener(); PropertyChangeListener l3 = new PropertyChangeListenerProxy("myProp", l2); sup.addPropertyChangeListener(l3); assertEquals(1, sup.getPropertyChangeListeners().length); sup.removePropertyChangeListener("myProp", l2); assertEquals(0, sup.getPropertyChangeListeners().length); assertEquals(0, sup.getPropertyChangeListeners("myProp").length); } /* * Test the method removePropertyChangeListener(PropertyChangeListener, * String) with a non-registered listener parameter.