| /** |
| * Copyright (C) 2006 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.inject.example; |
| |
| import com.google.inject.Inject; |
| import com.google.inject.CreationException; |
| import com.google.inject.Injector; |
| import com.google.inject.Guice; |
| import com.google.inject.ImplementedBy; |
| import com.google.inject.Singleton; |
| import com.google.inject.example.ClientServiceWithGuice.MyModule; |
| import junit.framework.Assert; |
| |
| /** |
| * @author crazybob@google.com (Bob Lee) |
| */ |
| public class ClientServiceWithGuiceDefaults { |
| |
| // 44 lines |
| |
| @ImplementedBy(ServiceImpl.class) |
| public interface Service { |
| void go(); |
| } |
| |
| @Singleton |
| public static class ServiceImpl implements ClientServiceWithGuiceDefaults.Service { |
| public void go() { |
| // ... |
| } |
| } |
| |
| public static class Client { |
| |
| private final Service service; |
| |
| @Inject |
| public Client(Service service) { |
| this.service = service; |
| } |
| |
| public void go() { |
| service.go(); |
| } |
| } |
| |
| public void testClient() { |
| MockService mock = new MockService(); |
| Client client = new Client(mock); |
| client.go(); |
| Assert.assertTrue(mock.isGone()); |
| } |
| |
| public static class MockService implements Service { |
| |
| private boolean gone = false; |
| |
| public void go() { |
| gone = true; |
| } |
| |
| public boolean isGone() { |
| return gone; |
| } |
| } |
| |
| public static void main(String[] args) throws CreationException { |
| new ClientServiceWithGuiceDefaults().testClient(); |
| Injector injector = Guice.createInjector(new MyModule()); |
| Client client = injector.getProvider(Client.class).get(); |
| } |
| } |