SpringEventReferenceCollectionAspectTest.java

/**
 * Copyright (c) 2009-2011 VMware, Inc. All Rights Reserved.
 *
 * 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.springsource.insight.plugin.springcore;

import il.co.springsource.insight.MyEvent;

import org.junit.Test;
import org.mockito.Mockito;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.event.ContextRefreshedEvent;

import com.springsource.insight.collection.test.AbstractCollectionTestSupport;

/**
 *
 */
public class SpringEventReferenceCollectionAspectTest extends AbstractCollectionTestSupport {
    public SpringEventReferenceCollectionAspectTest() {
        super();
    }

    @Test
    public void testNonApplicationContextEvent() {
        MyEvent event = new MyEvent("testNonApplicationContextEvent");
        assertNullValue("Unexpected initial context", SpringEventReferenceCollectionAspect.getApplicationContext(event));
        assertTrue("Event class not marked without context", SpringEventReferenceCollectionAspect.nonContextEvents.contains(event.getClass()));
        assertNullValue("Unexpected extraction method mapping", SpringEventReferenceCollectionAspect.contextMethods.get(event.getClass()));
    }

    @Test
    public void testApplicationContextEvent() {
        ApplicationContext expected = Mockito.mock(ApplicationContext.class);
        ContextRefreshedEvent event = new ContextRefreshedEvent(expected);
        ApplicationContext actual = SpringEventReferenceCollectionAspect.getApplicationContext(event);
        assertSame("Mismatched context instances", expected, actual);
        assertNotNull("Missing extraction method mapping", SpringEventReferenceCollectionAspect.contextMethods.get(event.getClass()));
        assertFalse("Event class marked as without context", SpringEventReferenceCollectionAspect.nonContextEvents.contains(event.getClass()));
    }

    @Test
    public void testStaticContextEventMethod() {
        StaticContextMethodEvent event = new StaticContextMethodEvent();
        assertNullValue("Unexpected static context", SpringEventReferenceCollectionAspect.getApplicationContext(event));
        assertTrue("Event class not marked without context", SpringEventReferenceCollectionAspect.nonContextEvents.contains(event.getClass()));
        assertNullValue("Unexpected extraction method mapping", SpringEventReferenceCollectionAspect.contextMethods.get(event.getClass()));
    }

    @Test
    public void testExceptionInContextRetrieval() {
        ExceptionContextEvent event = new ExceptionContextEvent();
        assertNullValue("Unexpected initial context", SpringEventReferenceCollectionAspect.getApplicationContext(event));
        assertTrue("Event class not marked without context", SpringEventReferenceCollectionAspect.nonContextEvents.contains(event.getClass()));
        assertNotNull("Missing extraction method mapping", SpringEventReferenceCollectionAspect.contextMethods.get(event.getClass()));
    }

    static class StaticContextMethodEvent extends ApplicationEvent {
        private static final long serialVersionUID = 1L;

        public StaticContextMethodEvent() {
            super(Void.class);
        }

        public static ApplicationContext getApplicationContext() {
            return Mockito.mock(ApplicationContext.class);
        }
    }

    static class ExceptionContextEvent extends ApplicationEvent {
        private static final long serialVersionUID = 1L;

        public ExceptionContextEvent() {
            super(Void.class);
        }

        public final ApplicationContext getApplicationContext() {
            throw new UnsupportedOperationException("N/A");
        }
    }
}