| /** |
| * Copyright (C) 2008 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.spi; |
| |
| import com.google.inject.AbstractModule; |
| import com.google.inject.Guice; |
| import com.google.inject.Inject; |
| import com.google.inject.Injector; |
| import com.google.inject.Key; |
| import com.google.inject.Provider; |
| import com.google.inject.internal.util.ImmutableSet; |
| import com.google.inject.internal.util.Iterables; |
| import java.util.Set; |
| import junit.framework.TestCase; |
| |
| /** |
| * @author jessewilson@google.com (Jesse Wilson) |
| */ |
| public class HasDependenciesTest extends TestCase { |
| |
| /** |
| * When an instance implements HasDependencies, the injected dependencies aren't used. |
| */ |
| public void testInstanceWithDependencies() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| protected void configure() { |
| bind(A.class).toInstance(new AWithDependencies()); |
| } |
| }); |
| |
| InstanceBinding<?> binding = (InstanceBinding<?>) injector.getBinding(A.class); |
| assertEquals(ImmutableSet.<Dependency<?>>of(Dependency.get(Key.get(Integer.class))), |
| binding.getDependencies()); |
| } |
| |
| public void testInstanceWithoutDependencies() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| protected void configure() { |
| bind(A.class).toInstance(new A()); |
| } |
| }); |
| |
| InstanceBinding<?> binding = (InstanceBinding<?>) injector.getBinding(A.class); |
| Dependency<?> onlyDependency = Iterables.getOnlyElement(binding.getDependencies()); |
| assertEquals(Key.get(String.class), onlyDependency.getKey()); |
| } |
| |
| public void testProvider() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| protected void configure() { |
| bind(A.class).toProvider(new ProviderOfA()); |
| } |
| }); |
| |
| ProviderInstanceBinding<?> binding = (ProviderInstanceBinding<?>) injector.getBinding(A.class); |
| Dependency<?> onlyDependency = Iterables.getOnlyElement(binding.getDependencies()); |
| assertEquals(Key.get(String.class), onlyDependency.getKey()); |
| } |
| |
| static class A { |
| @Inject void injectUnusedDependencies(String unused) {} |
| } |
| |
| static class ProviderOfA implements Provider<A> { |
| @Inject void injectUnusedDependencies(String unused) {} |
| |
| public A get() { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| |
| static class AWithDependencies extends A implements HasDependencies { |
| public Set<Dependency<?>> getDependencies() { |
| return ImmutableSet.<Dependency<?>>of(Dependency.get(Key.get(Integer.class))); |
| } |
| } |
| |
| static class ProviderOfAWithDependencies |
| extends ProviderOfA implements ProviderWithDependencies<A> { |
| public Set<Dependency<?>> getDependencies() { |
| return ImmutableSet.<Dependency<?>>of(Dependency.get(Key.get(Integer.class))); |
| } |
| } |
| } |