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SpringExtension.java
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SpringExtension.java
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/*
* Copyright 2015 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.junit5;
import java.lang.reflect.Method;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.junit.gen5.api.extension.AfterAllCallbacks;
import org.junit.gen5.api.extension.AfterEachCallbacks;
import org.junit.gen5.api.extension.BeforeAllCallbacks;
import org.junit.gen5.api.extension.BeforeEachCallbacks;
import org.junit.gen5.api.extension.InstancePostProcessor;
import org.junit.gen5.api.extension.TestExecutionContext;
import org.junit.gen5.api.extension.TestExtension;
import org.springframework.test.context.TestContextManager;
import org.springframework.util.Assert;
/**
* {@code SpringExtension} demonstrates how the Spring TestContext Framework
* can be fully integrated into the JUnit 5 prototype using a single
* {@link TestExtension}.
*
* @author Sam Brannen
* @since 5.0
*/
public class SpringExtension implements BeforeAllCallbacks, AfterAllCallbacks, InstancePostProcessor,
BeforeEachCallbacks, AfterEachCallbacks {
/**
* Cache of {@code TestContextManagers} keyed by test class.
*/
private final Map<Class<?>, TestContextManager> testContextManagerCache = new ConcurrentHashMap<Class<?>, TestContextManager>(
64);
@Override
public void preBeforeAll(TestExecutionContext testExecutionContext) throws Exception {
Class<?> testClass = testExecutionContext.getTestClass().get();
getTestContextManager(testClass).beforeTestClass();
}
@Override
public void postAfterAll(TestExecutionContext testExecutionContext) throws Exception {
Class<?> testClass = testExecutionContext.getTestClass().get();
try {
getTestContextManager(testClass).afterTestClass();
}
finally {
this.testContextManagerCache.remove(testClass);
}
}
@Override
public void postProcessTestInstance(TestExecutionContext testExecutionContext, Object testInstance)
throws Exception {
Class<?> testClass = testExecutionContext.getTestClass().get();
getTestContextManager(testClass).prepareTestInstance(testInstance);
}
@Override
public void preBeforeEach(TestExecutionContext testExecutionContext, Object testInstance) throws Exception {
Class<?> testClass = testExecutionContext.getTestClass().get();
Method testMethod = testExecutionContext.getTestMethod().get();
getTestContextManager(testClass).beforeTestMethod(testInstance, testMethod);
}
@Override
public void postAfterEach(TestExecutionContext testExecutionContext, Object testInstance) throws Exception {
Class<?> testClass = testExecutionContext.getTestClass().get();
Method testMethod = testExecutionContext.getTestMethod().get();
Throwable testException = testExecutionContext.getTestException().orElse(null);
getTestContextManager(testClass).afterTestMethod(testInstance, testMethod, testException);
}
/**
* Get the {@link TestContextManager} associated with the supplied test class.
* @param testClass the test class to be managed; never {@code null}
*/
private TestContextManager getTestContextManager(Class<?> testClass) {
Assert.notNull(testClass, "testClass must not be null");
return this.testContextManagerCache.computeIfAbsent(testClass, TestContextManager::new);
}
}