com.ryantenney.metrics.spring.AopFieldInjectionInteractionTest.java Source code

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Here is the source code for com.ryantenney.metrics.spring.AopFieldInjectionInteractionTest.java

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/**
 * Copyright (C) 2012 Ryan W Tenney (ryan@10e.us)
 *
 * 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.ryantenney.metrics.spring;

import static org.hamcrest.Matchers.*;
import static org.junit.Assert.assertThat;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.codahale.metrics.Counter;
import com.codahale.metrics.MetricRegistry;
import com.ryantenney.metrics.annotation.InjectMetric;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:aop-field-injection-interaction.xml")
public class AopFieldInjectionInteractionTest {

    @Autowired
    private MetricRegistry metricRegistry;
    @Autowired
    private TestAspectTarget target;

    @Test
    public void testFieldInjectionShouldNotCauseErrorWhenTargetIsAopProxy() throws Exception {
        // verify that AOP interception is working
        assertThat(target.targetMethod(), is(5));

        assertThat(metricRegistry.getCounters(), hasKey("targetCounter"));
        assertThat(metricRegistry.getCounters().get("targetCounter").getCount(), is(1L));
    }

}

@Aspect
class TestAspectWrapper {

    @Around("execution(* com.ryantenney.metrics.spring.TestAspectTarget.targetMethod())")
    public Object aroundMethod(ProceedingJoinPoint joinPoint) throws Throwable {
        joinPoint.proceed();
        return 5;
    }

}

interface TestAspectTarget {

    public int targetMethod();

}

class TestAspectTargetImpl implements TestAspectTarget {

    @InjectMetric(name = "targetCounter", absolute = true)
    private Counter counter;

    @Override
    public int targetMethod() {
        this.counter.inc();
        return 3;
    }

}