public void testMessageRegistration() {
MessageSource source = new MessageSourceSupport(this);
MessageListener[] ls = source.getMessageListeners();
assertNotNull(ls);
assertEquals("Number of listeners not 0", 0, ls.length);
// test add and remove methods.
// Add listeners. Ensure that they have been added
for (int i = 0; i < listeners.length; i++) {
source.addMessageListener(listeners[i]);
}
ls = source.getMessageListeners();
assertEquals(listeners.length, ls.length);
// Remove all listenters.
for (int i = 0; i < listeners.length; i++) {
source.removeMessageListener(listeners[i]);
}
ls = source.getMessageListeners();
assertEquals(0, ls.length);
// test to ensure that null adds and removes have no effect.
for (int i = 0; i < COUNT; i++) {
source.addMessageListener(null);
ls = source.getMessageListeners();
assertEquals(0, ls.length);
}
// repopulate the message source.
for (int i = 0; i < listeners.length; i++) {
source.addMessageListener(listeners[i]);
}
for (int i = 0; i < COUNT; i++) {
source.removeMessageListener(null);
ls = source.getMessageListeners();
assertEquals(listeners.length, ls.length);
}
}
