| /** |
| * 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.intercept; |
| |
| import com.google.inject.spi.ConstructionProxy; |
| import static com.google.inject.intercept.Queries.*; |
| import com.google.inject.Factory; |
| |
| import junit.framework.TestCase; |
| |
| import org.aopalliance.intercept.MethodInterceptor; |
| import org.aopalliance.intercept.MethodInvocation; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| |
| /** |
| * @author crazybob@google.com (Bob Lee) |
| */ |
| public class ProxyFactoryTest extends TestCase { |
| |
| public void testSimpleCase() |
| throws NoSuchMethodException, InvocationTargetException { |
| SimpleInterceptor interceptor = new SimpleInterceptor(); |
| |
| ProxyFactoryBuilder builder = new ProxyFactoryBuilder(); |
| builder.intercept(any(), any(), interceptor); |
| ProxyFactory factory = builder.create(); |
| |
| Factory<Simple> creator = factory.getFactory(Simple.class); |
| |
| Simple simple = creator.get(); |
| 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 { |
| SimpleInterceptor interceptor = new SimpleInterceptor(); |
| |
| ProxyFactoryBuilder builder = new ProxyFactoryBuilder(); |
| |
| builder.intercept( |
| only(Bar.class), annotatedWith(Intercept.class), interceptor); |
| ProxyFactory factory = builder.create(); |
| |
| ConstructionProxy<Foo> fooFactory = |
| factory.get(Foo.class.getDeclaredConstructor()); |
| ConstructionProxy<Bar> barFactory = |
| factory.get(Bar.class.getDeclaredConstructor()); |
| |
| 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 { |
| SimpleInterceptor interceptor = new SimpleInterceptor(); |
| |
| ProxyFactoryBuilder builder = new ProxyFactoryBuilder(); |
| builder.intercept(any(), any(), interceptor); |
| ProxyFactory factory = builder.create(); |
| |
| ConstructionProxy<A> constructor = |
| factory.get(A.class.getDeclaredConstructor(int.class)); |
| |
| A a = constructor.newInstance(5); |
| a.a(); |
| assertEquals(5, a.i); |
| } |
| |
| public void testNotProxied() |
| throws NoSuchMethodException, InvocationTargetException { |
| SimpleInterceptor interceptor = new SimpleInterceptor(); |
| |
| ProxyFactoryBuilder builder = new ProxyFactoryBuilder(); |
| builder.intercept(not(any()), not(any()), interceptor); |
| ProxyFactory factory = builder.create(); |
| |
| ConstructionProxy<A> constructor = |
| factory.get(A.class.getDeclaredConstructor(int.class)); |
| |
| A a = constructor.newInstance(5); |
| assertEquals(A.class, a.getClass()); |
| } |
| |
| static class A { |
| final int i; |
| public A(int i) { |
| this.i = i; |
| } |
| public void a() {} |
| } |
| |
| public void testMultipleInterceptors() |
| throws NoSuchMethodException, InvocationTargetException { |
| DoubleInterceptor doubleInterceptor = new DoubleInterceptor(); |
| CountingInterceptor countingInterceptor = new CountingInterceptor(); |
| |
| ProxyFactoryBuilder builder = new ProxyFactoryBuilder(); |
| builder.intercept(any(), any(), doubleInterceptor, countingInterceptor); |
| ProxyFactory factory = builder.create(); |
| |
| ConstructionProxy<Counter> constructor = |
| factory.get(Counter.class.getDeclaredConstructor()); |
| |
| 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++; |
| } |
| } |
| } |