| /** |
| * 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; |
| |
| import java.io.IOException; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * @author crazybob@google.com (Bob Lee) |
| */ |
| public class ScopesTest extends TestCase { |
| |
| public void testSingletonAnnotation() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| protected void configure() { |
| bind(AnnotatedSingleton.class); |
| } |
| }); |
| |
| assertSame( |
| injector.getInstance(AnnotatedSingleton.class), |
| injector.getInstance(AnnotatedSingleton.class)); |
| } |
| |
| public void testBoundAsSingleton() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| protected void configure() { |
| bind(BoundAsSingleton.class).in(Scopes.SINGLETON); |
| } |
| }); |
| |
| assertSame( |
| injector.getInstance(BoundAsSingleton.class), |
| injector.getInstance(BoundAsSingleton.class)); |
| } |
| |
| public void testJustInTimeAnnotatedSingleton() { |
| Injector injector = Guice.createInjector(); |
| |
| assertSame( |
| injector.getInstance(AnnotatedSingleton.class), |
| injector.getInstance(AnnotatedSingleton.class)); |
| } |
| |
| public void testSingletonIsPerInjector() { |
| assertNotSame( |
| Guice.createInjector().getInstance(AnnotatedSingleton.class), |
| Guice.createInjector().getInstance(AnnotatedSingleton.class)); |
| } |
| |
| public void testOverriddingAnnotation() { |
| Injector injector = Guice.createInjector(new AbstractModule() { |
| protected void configure() { |
| bind(AnnotatedSingleton.class).in(Scopes.NO_SCOPE); |
| } |
| }); |
| |
| assertNotSame( |
| injector.getInstance(AnnotatedSingleton.class), |
| injector.getInstance(AnnotatedSingleton.class)); |
| } |
| |
| public void testAnnotatedSingletonsInProductionAreEager() { |
| int nextInstanceId = AnnotatedSingleton.nextInstanceId.intValue(); |
| |
| Guice.createInjector(Stage.PRODUCTION, new AbstractModule() { |
| protected void configure() { |
| bind(AnnotatedSingleton.class); |
| } |
| }); |
| |
| assertEquals(nextInstanceId + 1, AnnotatedSingleton.nextInstanceId.intValue()); |
| } |
| |
| public void testAnnotatedSingletonsInDevelopmentAreNotEager() { |
| int nextInstanceId = AnnotatedSingleton.nextInstanceId.intValue(); |
| |
| Guice.createInjector(Stage.DEVELOPMENT, new AbstractModule() { |
| protected void configure() { |
| bind(AnnotatedSingleton.class); |
| } |
| }); |
| |
| assertEquals(nextInstanceId, AnnotatedSingleton.nextInstanceId.intValue()); |
| } |
| |
| public void testBoundAsSingletonInProductionAreEager() { |
| int nextInstanceId = BoundAsSingleton.nextInstanceId.intValue(); |
| |
| Guice.createInjector(Stage.PRODUCTION, new AbstractModule() { |
| protected void configure() { |
| bind(BoundAsSingleton.class).in(Scopes.SINGLETON); |
| } |
| }); |
| |
| assertEquals(nextInstanceId + 1, BoundAsSingleton.nextInstanceId.intValue()); |
| } |
| |
| public void testBoundAsSingletonInDevelopmentAreNotEager() { |
| int nextInstanceId = BoundAsSingleton.nextInstanceId.intValue(); |
| |
| Guice.createInjector(Stage.DEVELOPMENT, new AbstractModule() { |
| protected void configure() { |
| bind(BoundAsSingleton.class).in(Scopes.SINGLETON); |
| } |
| }); |
| |
| assertEquals(nextInstanceId, BoundAsSingleton.nextInstanceId.intValue()); |
| } |
| |
| public void testSingletonScopeIsNotSerializable() throws IOException { |
| Asserts.assertNotSerializable(Scopes.SINGLETON); |
| } |
| |
| public void testNoScopeIsNotSerializable() throws IOException { |
| Asserts.assertNotSerializable(Scopes.NO_SCOPE); |
| } |
| |
| @Singleton |
| static class AnnotatedSingleton { |
| static final AtomicInteger nextInstanceId = new AtomicInteger(1); |
| final int instanceId = nextInstanceId.getAndIncrement(); |
| } |
| |
| static class BoundAsSingleton { |
| static final AtomicInteger nextInstanceId = new AtomicInteger(1); |
| final int instanceId = nextInstanceId.getAndIncrement(); |
| } |
| } |