| /** |
| * 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.internal; |
| |
| import com.google.inject.Inject; |
| import static com.google.inject.matcher.Matchers.annotatedWith; |
| import static com.google.inject.matcher.Matchers.any; |
| import static com.google.inject.matcher.Matchers.not; |
| import static com.google.inject.matcher.Matchers.only; |
| |
| import com.google.inject.internal.util.Lists; |
| import com.google.inject.spi.InjectionPoint; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.List; |
| import junit.framework.TestCase; |
| import org.aopalliance.intercept.MethodInterceptor; |
| import org.aopalliance.intercept.MethodInvocation; |
| |
| /** |
| * @author crazybob@google.com (Bob Lee) |
| */ |
| public class ProxyFactoryTest extends TestCase { |
| |
| List<MethodAspect> aspects = Lists.newArrayList(); |
| |
| public void testSimpleCase() |
| throws NoSuchMethodException, InvocationTargetException, ErrorsException { |
| SimpleInterceptor interceptor = new SimpleInterceptor(); |
| InjectionPoint injectionPoint = InjectionPoint.forConstructorOf(Simple.class); |
| |
| aspects.add(new MethodAspect(any(), any(), interceptor)); |
| ProxyFactory<Simple> factory = new ProxyFactory<Simple>(injectionPoint, aspects); |
| |
| ConstructionProxy<Simple> constructionProxy = factory.create(); |
| |
| Simple simple = constructionProxy.newInstance(); |
| simple.invoke(); |
| assertTrue(simple.invoked); |
| assertTrue(interceptor.invoked); |
| } |
| |
| static class Simple { |
| boolean invoked = false; |
| public void invoke() { |
| invoked = true; |
| } |
| } |
| |
| static class SimpleInterceptor implements MethodInterceptor { |
| |
| boolean invoked = false; |
| |
| public Object invoke(MethodInvocation methodInvocation) throws Throwable { |
| invoked = true; |
| return methodInvocation.proceed(); |
| } |
| } |
| |
| public void testInterceptOneMethod() |
| throws NoSuchMethodException, InvocationTargetException, ErrorsException { |
| SimpleInterceptor interceptor = new SimpleInterceptor(); |
| |
| aspects.add(new MethodAspect(only(Bar.class), annotatedWith(Intercept.class), interceptor)); |
| |
| ConstructionProxy<Foo> fooFactory |
| = new ProxyFactory<Foo>(InjectionPoint.forConstructorOf(Foo.class), aspects).create(); |
| ConstructionProxy<Bar> barFactory |
| = new ProxyFactory<Bar>(InjectionPoint.forConstructorOf(Bar.class), aspects).create(); |
| |
| Foo foo = fooFactory.newInstance(); |
| Bar bar = barFactory.newInstance(); |
| |
| foo.foo(); |
| assertTrue(foo.fooCalled); |
| assertFalse(interceptor.invoked); |
| |
| bar.bar(); |
| assertTrue(bar.barCalled); |
| assertFalse(interceptor.invoked); |
| |
| bar.intercepted(); |
| assertTrue(bar.interceptedCalled); |
| assertTrue(interceptor.invoked); |
| } |
| |
| static class Foo { |
| boolean fooCalled; |
| @Intercept |
| void foo() { |
| fooCalled = true; |
| } |
| } |
| |
| static class Bar { |
| |
| boolean barCalled; |
| void bar() { |
| barCalled = true; |
| } |
| |
| boolean interceptedCalled; |
| |
| @Intercept |
| void intercepted() { |
| interceptedCalled = true; |
| } |
| } |
| |
| @Retention(RetentionPolicy.RUNTIME) |
| @interface Intercept {} |
| |
| public void testWithConstructorArguments() |
| throws InvocationTargetException, NoSuchMethodException, ErrorsException { |
| SimpleInterceptor interceptor = new SimpleInterceptor(); |
| |
| aspects.add(new MethodAspect(any(), any(), interceptor)); |
| ProxyFactory<A> factory |
| = new ProxyFactory<A>(InjectionPoint.forConstructorOf(A.class), aspects); |
| |
| ConstructionProxy<A> constructor = factory.create(); |
| |
| A a = constructor.newInstance(5); |
| a.a(); |
| assertEquals(5, a.i); |
| } |
| |
| public void testNotProxied() |
| throws NoSuchMethodException, InvocationTargetException, ErrorsException { |
| SimpleInterceptor interceptor = new SimpleInterceptor(); |
| |
| aspects.add(new MethodAspect(not(any()), not(any()), interceptor)); |
| ProxyFactory<A> factory |
| = new ProxyFactory<A>(InjectionPoint.forConstructorOf(A.class), aspects); |
| |
| ConstructionProxy<A> constructor = factory.create(); |
| |
| A a = constructor.newInstance(5); |
| assertEquals(A.class, a.getClass()); |
| } |
| |
| static class A { |
| final int i; |
| @Inject public A(int i) { |
| this.i = i; |
| } |
| public void a() {} |
| } |
| |
| public void testMultipleInterceptors() |
| throws NoSuchMethodException, InvocationTargetException, ErrorsException { |
| DoubleInterceptor doubleInterceptor = new DoubleInterceptor(); |
| CountingInterceptor countingInterceptor = new CountingInterceptor(); |
| |
| aspects.add(new MethodAspect(any(), any(), doubleInterceptor, countingInterceptor)); |
| ProxyFactory<Counter> factory |
| = new ProxyFactory<Counter>(InjectionPoint.forConstructorOf(Counter.class), aspects); |
| |
| ConstructionProxy<Counter> constructor = factory.create(); |
| |
| Counter counter = constructor.newInstance(); |
| counter.inc(); |
| assertEquals(2, counter.count); |
| assertEquals(2, countingInterceptor.count); |
| } |
| |
| static class CountingInterceptor implements MethodInterceptor { |
| |
| int count; |
| |
| public Object invoke(MethodInvocation methodInvocation) throws Throwable { |
| count++; |
| return methodInvocation.proceed(); |
| } |
| } |
| |
| static class DoubleInterceptor implements MethodInterceptor { |
| |
| public Object invoke(MethodInvocation methodInvocation) throws Throwable { |
| methodInvocation.proceed(); |
| return methodInvocation.proceed(); |
| } |
| } |
| |
| static class Counter { |
| int count; |
| void inc() { |
| count++; |
| } |
| } |
| } |