public void testAddListenerWithIllegalArguments() {
Fixture.fakePhase(PhaseId.PROCESS_ACTION);
Display display = new Display();
Widget widget = new Shell(display);
IEventAdapter eventAdapter = (IEventAdapter) widget.getAdapter(IEventAdapter.class);
try {
eventAdapter.addListener(SelectionListener.class, new Object());
fail();
} catch (final IllegalArgumentException iae) {
}
try {
eventAdapter.addListener(SelectionListener.class, null);
fail();
} catch (final IllegalArgumentException iae) {
}
try {
SelectionListener validListener = new SelectionAdapter() {};
eventAdapter.addListener(null, validListener);
fail();
} catch (final IllegalArgumentException iae) {
}
Object[] listeners = eventAdapter.getListener(SelectionListener.class);
assertEquals(0, listeners.length);
}
