/*
* Copyright 2002-2008 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.test.context;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* JUnit 4 based unit test which verifies correct
* {@link ContextCache application context caching} in conjunction with the
* {@link SpringJUnit4ClassRunner} and the {@link DirtiesContext} annotation.
*
* @author Sam Brannen
* @author Juergen Hoeller
* @since 2.5
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "/org/springframework/test/context/junit4/SpringJUnit4ClassRunnerAppCtxTests-context.xml")
public class SpringRunnerContextCacheTests implements ApplicationContextAware {
private static ApplicationContext dirtiedApplicationContext;
protected ApplicationContext applicationContext;
/**
* Asserts the statistics of the supplied context cache.
* @param usageScenario the scenario in which the statistics are used
* @param expectedSize the expected number of contexts in the cache
* @param expectedHitCount the expected hit count
* @param expectedMissCount the expected miss count
*/
public static final void assertContextCacheStatistics(String usageScenario, int expectedSize,
int expectedHitCount, int expectedMissCount) {
ContextCache contextCache = TestContextManager.contextCache;
assertEquals("Verifying number of contexts in cache (" + usageScenario + ").", expectedSize,
contextCache.size());
assertEquals("Verifying number of cache hits (" + usageScenario + ").", expectedHitCount,
contextCache.getHitCount());
assertEquals("Verifying number of cache misses (" + usageScenario + ").", expectedMissCount,
contextCache.getMissCount());
}
@BeforeClass
public static void verifyInitialCacheState() {
dirtiedApplicationContext = null;
ContextCache contextCache = TestContextManager.contextCache;
contextCache.clear();
contextCache.clearStatistics();
assertContextCacheStatistics("BeforeClass", 0, 0, 0);
}
@AfterClass
public static void verifyFinalCacheState() {
assertContextCacheStatistics("AfterClass", 1, 1, 2);
}
public final void setApplicationContext(final ApplicationContext applicationContext) {
this.applicationContext = applicationContext;
}
@Test
@DirtiesContext
public void dirtyContext() {
assertContextCacheStatistics("dirtyContext()", 1, 0, 1);
assertNotNull("The application context should have been set due to ApplicationContextAware semantics.",
this.applicationContext);
SpringRunnerContextCacheTests.dirtiedApplicationContext = this.applicationContext;
}
@Test
public void verifyContextWasDirtied() {
assertContextCacheStatistics("verifyContextWasDirtied()", 1, 0, 2);
assertNotNull("The application context should have been set due to ApplicationContextAware semantics.",
this.applicationContext);
assertNotSame("The application context should have been 'dirtied'.",
SpringRunnerContextCacheTests.dirtiedApplicationContext, this.applicationContext);
SpringRunnerContextCacheTests.dirtiedApplicationContext = this.applicationContext;
}
@Test
public void verifyContextWasNotDirtied() {
assertContextCacheStatistics("verifyContextWasNotDirtied()", 1, 1, 2);
assertNotNull("The application context should have been set due to ApplicationContextAware semantics.",
this.applicationContext);
assertSame("The application context should NOT have been 'dirtied'.",
SpringRunnerContextCacheTests.dirtiedApplicationContext, this.applicationContext);
}
}