Spring Framework example source code file (PerformanceMonitorInterceptorTests.java)

This example Spring Framework source code file (PerformanceMonitorInterceptorTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

class, illegalargumentexception, log, log, method, methodinvocation, methodinvocation, mockcontrol, mockcontrol, performancemonitorinterceptor, performancemonitorinterceptor, reflection, some, testcase, throwable

The Spring Framework PerformanceMonitorInterceptorTests.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * 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 org.springframework.aop.interceptor;

import java.lang.reflect.Method;

import junit.framework.TestCase;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.commons.logging.Log;
import org.easymock.MockControl;

/**
 * @author Rob Harrop
 * @author Rick Evans
 */
public class PerformanceMonitorInterceptorTests extends TestCase {

	public void testSuffixAndPrefixAssignment() {
		PerformanceMonitorInterceptor interceptor = new PerformanceMonitorInterceptor();

		assertNotNull(interceptor.getPrefix());
		assertNotNull(interceptor.getSuffix());

		interceptor.setPrefix(null);
		interceptor.setSuffix(null);

		assertNotNull(interceptor.getPrefix());
		assertNotNull(interceptor.getSuffix());
	}

	public void testSunnyDayPathLogsPerformanceMetricsCorrectly() throws Throwable {
		MockControl mockLog = MockControl.createControl(Log.class);
		Log log = (Log) mockLog.getMock();

		MockControl mockMethodInvocation = MockControl.createControl(MethodInvocation.class);
		MethodInvocation methodInvocation = (MethodInvocation) mockMethodInvocation.getMock();

		Method toString = String.class.getMethod("toString", new Class[0]);

		methodInvocation.getMethod();
		mockMethodInvocation.setReturnValue(toString);
		methodInvocation.proceed();
		mockMethodInvocation.setReturnValue(null);
		log.trace("Some performance metric");
		mockLog.setMatcher(MockControl.ALWAYS_MATCHER);
		mockLog.setVoidCallable();

		mockMethodInvocation.replay();
		mockLog.replay();

		PerformanceMonitorInterceptor interceptor = new PerformanceMonitorInterceptor(true);
		interceptor.invokeUnderTrace(methodInvocation, log);

		mockLog.verify();
		mockMethodInvocation.verify();
	}

	public void testExceptionPathStillLogsPerformanceMetricsCorrectly() throws Throwable {
		MockControl mockLog = MockControl.createControl(Log.class);
		Log log = (Log) mockLog.getMock();

		MockControl mockMethodInvocation = MockControl.createControl(MethodInvocation.class);
		MethodInvocation methodInvocation = (MethodInvocation) mockMethodInvocation.getMock();

		Method toString = String.class.getMethod("toString", new Class[0]);

		methodInvocation.getMethod();
		mockMethodInvocation.setReturnValue(toString);
		methodInvocation.proceed();
		mockMethodInvocation.setThrowable(new IllegalArgumentException());
		log.trace("Some performance metric");
		mockLog.setMatcher(MockControl.ALWAYS_MATCHER);
		mockLog.setVoidCallable();

		mockMethodInvocation.replay();
		mockLog.replay();

		PerformanceMonitorInterceptor interceptor = new PerformanceMonitorInterceptor(true);
		try {
			interceptor.invokeUnderTrace(methodInvocation, log);
			fail("Must have propagated the IllegalArgumentException.");
		}
		catch (IllegalArgumentException expected) {
		}

		mockLog.verify();
		mockMethodInvocation.verify();
	}

}