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Spring TestContext Framework
/*
* Copyright 2002-2017 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
*
* https://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.testng;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.testng.IHookCallBack;
import org.testng.IHookable;
import org.testng.ITestResult;
import org.testng.annotations.AfterClass;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.BeforeMethod;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.lang.Nullable;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.TestContext;
import org.springframework.test.context.TestContextManager;
import org.springframework.test.context.TestExecutionListeners;
import org.springframework.test.context.support.DependencyInjectionTestExecutionListener;
import org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener;
import org.springframework.test.context.support.DirtiesContextTestExecutionListener;
import org.springframework.test.context.web.ServletTestExecutionListener;
/**
* Abstract base test class which integrates the Spring TestContext Framework
* with explicit {@link ApplicationContext} testing support in a TestNG
* environment.
*
* Concrete subclasses:
*
* - Typically declare a class-level {@link ContextConfiguration
* @ContextConfiguration} annotation to configure the {@linkplain ApplicationContext
* application context} {@linkplain ContextConfiguration#locations() resource locations}
* or {@linkplain ContextConfiguration#classes() annotated classes}. If your test
* does not need to load an application context, you may choose to omit the
* {@code @ContextConfiguration} declaration and to configure the appropriate
* {@link org.springframework.test.context.TestExecutionListener TestExecutionListeners}
* manually.
* - Must have constructors which either implicitly or explicitly delegate to
* {@code super();}.
*
*
* The following {@link org.springframework.test.context.TestExecutionListener
* TestExecutionListeners} are configured by default:
*
*
* - {@link org.springframework.test.context.web.ServletTestExecutionListener}
*
- {@link org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener}
*
- {@link org.springframework.test.context.support.DependencyInjectionTestExecutionListener}
*
- {@link org.springframework.test.context.support.DirtiesContextTestExecutionListener}
*
*
* @author Sam Brannen
* @author Juergen Hoeller
* @since 2.5
* @see ContextConfiguration
* @see TestContext
* @see TestContextManager
* @see TestExecutionListeners
* @see ServletTestExecutionListener
* @see DirtiesContextBeforeModesTestExecutionListener
* @see DependencyInjectionTestExecutionListener
* @see DirtiesContextTestExecutionListener
* @see AbstractTransactionalTestNGSpringContextTests
* @see org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests
*/
@TestExecutionListeners({ ServletTestExecutionListener.class, DirtiesContextBeforeModesTestExecutionListener.class,
DependencyInjectionTestExecutionListener.class, DirtiesContextTestExecutionListener.class })
public abstract class AbstractTestNGSpringContextTests implements IHookable, ApplicationContextAware {
/** Logger available to subclasses */
protected final Log logger = LogFactory.getLog(getClass());
/**
* The {@link ApplicationContext} that was injected into this test instance
* via {@link #setApplicationContext(ApplicationContext)}.
*/
@Nullable
protected ApplicationContext applicationContext;
private final TestContextManager testContextManager;
@Nullable
private Throwable testException;
/**
* Construct a new AbstractTestNGSpringContextTests instance and initialize
* the internal {@link TestContextManager} for the current test class.
*/
public AbstractTestNGSpringContextTests() {
this.testContextManager = new TestContextManager(getClass());
}
/**
* Set the {@link ApplicationContext} to be used by this test instance,
* provided via {@link ApplicationContextAware} semantics.
* @param applicationContext the ApplicationContext that this test runs in
*/
@Override
public final void setApplicationContext(ApplicationContext applicationContext) {
this.applicationContext = applicationContext;
}
/**
* Delegates to the configured {@link TestContextManager} to call
* {@linkplain TestContextManager#beforeTestClass() 'before test class'} callbacks.
* @throws Exception if a registered TestExecutionListener throws an exception
*/
@BeforeClass(alwaysRun = true)
protected void springTestContextBeforeTestClass() throws Exception {
this.testContextManager.beforeTestClass();
}
/**
* Delegates to the configured {@link TestContextManager} to
* {@linkplain TestContextManager#prepareTestInstance(Object) prepare} this test
* instance prior to execution of any individual tests, for example for
* injecting dependencies, etc.
* @throws Exception if a registered TestExecutionListener throws an exception
*/
@BeforeClass(alwaysRun = true, dependsOnMethods = "springTestContextBeforeTestClass")
protected void springTestContextPrepareTestInstance() throws Exception {
this.testContextManager.prepareTestInstance(this);
}
/**
* Delegates to the configured {@link TestContextManager} to
* {@linkplain TestContextManager#beforeTestMethod(Object,Method) pre-process}
* the test method before the actual test is executed.
* @param testMethod the test method which is about to be executed
* @throws Exception allows all exceptions to propagate
*/
@BeforeMethod(alwaysRun = true)
protected void springTestContextBeforeTestMethod(Method testMethod) throws Exception {
this.testContextManager.beforeTestMethod(this, testMethod);
}
/**
* Delegates to the {@linkplain IHookCallBack#runTestMethod(ITestResult) test
* method} in the supplied {@code callback} to execute the actual test
* and then tracks the exception thrown during test execution, if any.
* @see org.testng.IHookable#run(IHookCallBack, ITestResult)
*/
@Override
public void run(IHookCallBack callBack, ITestResult testResult) {
Method testMethod = testResult.getMethod().getConstructorOrMethod().getMethod();
boolean beforeCallbacksExecuted = false;
try {
this.testContextManager.beforeTestExecution(this, testMethod);
beforeCallbacksExecuted = true;
}
catch (Throwable ex) {
this.testException = ex;
}
if (beforeCallbacksExecuted) {
callBack.runTestMethod(testResult);
this.testException = getTestResultException(testResult);
}
try {
this.testContextManager.afterTestExecution(this, testMethod, this.testException);
}
catch (Throwable ex) {
if (this.testException == null) {
this.testException = ex;
}
}
if (this.testException != null) {
throwAsUncheckedException(this.testException);
}
}
/**
* Delegates to the configured {@link TestContextManager} to
* {@linkplain TestContextManager#afterTestMethod(Object, Method, Throwable)
* post-process} the test method after the actual test has executed.
*
* @param testMethod the test method which has just been executed on the
* test instance
* @throws Exception allows all exceptions to propagate
*/
@AfterMethod(alwaysRun = true)
protected void springTestContextAfterTestMethod(Method testMethod) throws Exception {
try {
this.testContextManager.afterTestMethod(this, testMethod, this.testException);
}
finally {
this.testException = null;
}
}
/**
* Delegates to the configured {@link TestContextManager} to call
* {@linkplain TestContextManager#afterTestClass() 'after test class'} callbacks.
* @throws Exception if a registered TestExecutionListener throws an exception
*/
@AfterClass(alwaysRun = true)
protected void springTestContextAfterTestClass() throws Exception {
this.testContextManager.afterTestClass();
}
private Throwable getTestResultException(ITestResult testResult) {
Throwable testResultException = testResult.getThrowable();
if (testResultException instanceof InvocationTargetException) {
testResultException = ((InvocationTargetException) testResultException).getCause();
}
return testResultException;
}
private RuntimeException throwAsUncheckedException(Throwable t) {
throwAs(t);
// Appeasing the compiler: the following line will never be executed.
throw new IllegalStateException(t);
}
@SuppressWarnings("unchecked")
private void throwAs(Throwable t) throws T {
throw (T) t;
}
}