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 23 import junit.framework.TestCase; 24 25 import java.lang.annotation.Retention; 26 27 /** 28 * @author crazybob (at) google.com (Bob Lee) 29 */ 30 public class ReflectionTest extends TestCase { 31 32 @Retention(RUNTIME) 33 @BindingAnnotation @interface I {} 34 35 public void testNormalBinding() throws CreationException { 36 final Foo foo = new Foo(); 37 38 Injector injector = Guice.createInjector(new AbstractModule() { 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 51 public void testConstantBinding() throws CreationException { 52 Injector injector = Guice.createInjector(new AbstractModule() { 53 protected void configure() { 54 bindConstant().annotatedWith(I.class).to(5); 55 } 56 }); 57 58 Binding<?> i = injector.getBinding(Key.get(int.class, I.class)); 59 assertEquals(5, i.getProvider().get()); 60 ElementSource source = (ElementSource) i.getSource(); 61 assertNotNull(source.getDeclaringSource()); 62 assertEquals(Key.get(int.class, I.class), i.getKey()); 63 } 64 65 public void testLinkedBinding() throws CreationException { 66 final Bar bar = new Bar(); 67 68 Injector injector = Guice.createInjector(new AbstractModule() { 69 protected void configure() { 70 bind(Bar.class).toInstance(bar); 71 bind(Key.get(Foo.class)).to(Key.get(Bar.class)); 72 } 73 }); 74 75 Binding<Foo> fooBinding = injector.getBinding(Key.get(Foo.class)); 76 assertSame(bar, fooBinding.getProvider().get()); 77 ElementSource source = (ElementSource) fooBinding.getSource(); 78 assertNotNull(source.getDeclaringSource()); 79 assertEquals(Key.get(Foo.class), fooBinding.getKey()); 80 } 81 82 static class Foo {} 83 84 static class Bar extends Foo {} 85 } 86
