Spring Framework example source code file (DebugInterceptorTests.java)

This example Spring Framework source code file (DebugInterceptorTests.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

debuginterceptor, debuginterceptortests, illegalargumentexception, illegalargumentexception, log, log, methodinvocation, methodinvocation, mockcontrol, mockcontrol, some, stubdebuginterceptor, testcase, throwable

The Spring Framework DebugInterceptorTests.java source code

/*
 * Copyright 2002-2006 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 junit.framework.TestCase;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.commons.logging.Log;
import org.easymock.MockControl;

/**
 * Unit tests for the {@link DebugInterceptor} class.
 *
 * @author Rick Evans
 */
public final class DebugInterceptorTests extends TestCase {

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

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

        log.isTraceEnabled();
        mockLog.setReturnValue(true);
        log.trace("Some tracing output");
        mockLog.setMatcher(MockControl.ALWAYS_MATCHER);
        methodInvocation.proceed();
        mockMethodInvocation.setReturnValue(null);
        log.trace("Some more tracing output");
        mockLog.setMatcher(MockControl.ALWAYS_MATCHER);
        mockLog.setVoidCallable();

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

        DebugInterceptor interceptor = new StubDebugInterceptor(log);
        interceptor.invoke(methodInvocation);
        checkCallCountTotal(interceptor);

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

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

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

        log.isTraceEnabled();
        mockLog.setReturnValue(true);
        log.trace("Some tracing output");
        mockLog.setMatcher(MockControl.ALWAYS_MATCHER);
        methodInvocation.proceed();
        IllegalArgumentException exception = new IllegalArgumentException();
        mockMethodInvocation.setThrowable(exception);
        log.trace("Some more tracing output", exception);
        mockLog.setMatcher(MockControl.ALWAYS_MATCHER);
        mockLog.setVoidCallable();

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

        DebugInterceptor interceptor = new StubDebugInterceptor(log);
        try {
            interceptor.invoke(methodInvocation);
            fail("Must have propagated the IllegalArgumentException.");
        } catch (IllegalArgumentException expected) {
        }
        checkCallCountTotal(interceptor);

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

    private void checkCallCountTotal(DebugInterceptor interceptor) {
        assertEquals("Intercepted call count not being incremented correctly", 1, interceptor.getCount());
    }


    private static final class StubDebugInterceptor extends DebugInterceptor {

        private final Log log;


        public StubDebugInterceptor(Log log) {
            super(true);
            this.log = log;
        }


        protected Log getLoggerForInvocation(MethodInvocation invocation) {
            return log;
        }

    }

}