| /** |
| * 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; |
| |
| import junit.framework.TestCase; |
| |
| /** |
| * @author crazybob@google.com (Bob Lee) |
| */ |
| public class BoundProviderTest extends TestCase { |
| |
| public void testFooProvider() throws CreationException { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| protected void configure() { |
| bind(Foo.class).toProvider(FooProvider.class); |
| } |
| }); |
| |
| Foo a = injector.getInstance(Foo.class); |
| Foo b = injector.getInstance(Foo.class); |
| |
| assertEquals(0, a.i); |
| assertEquals(0, b.i); |
| assertNotNull(a.bar); |
| assertNotNull(b.bar); |
| assertNotSame(a.bar, b.bar); |
| } |
| |
| public void testSingletonFooProvider() throws CreationException { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| protected void configure() { |
| bind(Foo.class).toProvider(SingletonFooProvider.class); |
| } |
| }); |
| |
| Foo a = injector.getInstance(Foo.class); |
| Foo b = injector.getInstance(Foo.class); |
| |
| assertEquals(0, a.i); |
| assertEquals(1, b.i); |
| assertNotNull(a.bar); |
| assertNotNull(b.bar); |
| assertSame(a.bar, b.bar); |
| } |
| |
| static class Bar {} |
| |
| static class Foo { |
| final Bar bar; |
| final int i; |
| |
| Foo(Bar bar, int i) { |
| this.bar = bar; |
| this.i = i; |
| } |
| } |
| |
| static class FooProvider implements Provider<Foo> { |
| |
| final Bar bar; |
| int count = 0; |
| |
| @Inject |
| public FooProvider(Bar bar) { |
| this.bar = bar; |
| } |
| |
| public Foo get() { |
| return new Foo(this.bar, count++); |
| } |
| } |
| |
| @Singleton |
| static class SingletonFooProvider implements Provider<Foo> { |
| |
| final Bar bar; |
| int count = 0; |
| |
| @Inject |
| public SingletonFooProvider(Bar bar) { |
| this.bar = bar; |
| } |
| |
| public Foo get() { |
| return new Foo(this.bar, count++); |
| } |
| } |
| } |