public void testActionPerformed() throws Exception {
Fixture.fakePhase(PhaseId.PROCESS_ACTION);
Display display = new Display();
Shell shell = new Shell(display);
Button button = new Button(shell, SWT.PUSH);
IEventAdapter eventAdapter = (IEventAdapter) button.getAdapter(IEventAdapter.class);
assertNotNull(eventAdapter);
assertSame(eventAdapter, button.getAdapter(IEventAdapter.class));
assertFalse(eventAdapter.hasListener(SelectionListener.class));
try {
eventAdapter.hasListener(Object.class);
fail();
} catch (final IllegalArgumentException iae) {
}
Object[] listener = eventAdapter.getListener(SelectionListener.class);
assertEquals(0, listener.length);
SelectionListener actionListener = new SelectionAdapter() {};
eventAdapter.addListener(SelectionListener.class, actionListener);
assertTrue(eventAdapter.hasListener(SelectionListener.class));
listener = eventAdapter.getListener(SelectionListener.class);
assertEquals(1, listener.length);
assertSame(actionListener, listener[0]);
eventAdapter.removeListener(SelectionListener.class, actionListener);
assertFalse(eventAdapter.hasListener(SelectionListener.class));
}
