1 /* 2 * Copyright (C) 2006 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.inject; 18 19 import static java.lang.annotation.RetentionPolicy.RUNTIME; 20 21 import com.google.inject.spi.ElementSource; 22 import java.lang.annotation.Retention; 23 import junit.framework.TestCase; 24 25 /** @author crazybob@google.com (Bob Lee) */ 26 public class ReflectionTest extends TestCase { 27 28 @Retention(RUNTIME) 29 @BindingAnnotation 30 @interface I {} 31 testNormalBinding()32 public void testNormalBinding() throws CreationException { 33 final Foo foo = new Foo(); 34 35 Injector injector = 36 Guice.createInjector( 37 new AbstractModule() { 38 @Override 39 protected void configure() { 40 bind(Foo.class).toInstance(foo); 41 } 42 }); 43 44 Binding<Foo> fooBinding = injector.getBinding(Key.get(Foo.class)); 45 assertSame(foo, fooBinding.getProvider().get()); 46 ElementSource source = (ElementSource) fooBinding.getSource(); 47 assertNotNull(source.getDeclaringSource()); 48 assertEquals(Key.get(Foo.class), fooBinding.getKey()); 49 } 50 testConstantBinding()51 public void testConstantBinding() throws CreationException { 52 Injector injector = 53 Guice.createInjector( 54 new AbstractModule() { 55 @Override 56 protected void configure() { 57 bindConstant().annotatedWith(I.class).to(5); 58 } 59 }); 60 61 Binding<?> i = injector.getBinding(Key.get(int.class, I.class)); 62 assertEquals(5, i.getProvider().get()); 63 ElementSource source = (ElementSource) i.getSource(); 64 assertNotNull(source.getDeclaringSource()); 65 assertEquals(Key.get(int.class, I.class), i.getKey()); 66 } 67 testLinkedBinding()68 public void testLinkedBinding() throws CreationException { 69 final Bar bar = new Bar(); 70 71 Injector injector = 72 Guice.createInjector( 73 new AbstractModule() { 74 @Override 75 protected void configure() { 76 bind(Bar.class).toInstance(bar); 77 bind(Key.get(Foo.class)).to(Key.get(Bar.class)); 78 } 79 }); 80 81 Binding<Foo> fooBinding = injector.getBinding(Key.get(Foo.class)); 82 assertSame(bar, fooBinding.getProvider().get()); 83 ElementSource source = (ElementSource) fooBinding.getSource(); 84 assertNotNull(source.getDeclaringSource()); 85 assertEquals(Key.get(Foo.class), fooBinding.getKey()); 86 } 87 88 static class Foo {} 89 90 static class Bar extends Foo {} 91 } 92