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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.tuscany.sca.host.embedded;
import java.lang.annotation.Annotation;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
/**
* A helper class that can be used to run an SCA JUnit test case. The test case will run in an isolated class loader.
*
* @version $Rev: 637634 $ $Date: 2008-03-16 12:59:48 -0700 (Sun, 16 Mar 2008) $
*/
public class SCATestCaseRunner {
private ClassLoader classLoader;
private Class<?> testSuiteClass;
private Object testSuite;
private Class<?> testResultClass;
private Class<?> testCaseClass;
private Object testCase;
private Class<?> beforeAnnotation;
private Class<?> beforeClassAnnotation;
private Class<?> afterAnnotation;
private Class<?> afterClassAnnotation;
private Class<?> junit4AdapterClass;
private Class<?> junit3TestCaseClass;
/**
* Constructs a new TestCase runner.
*
* @param testClass
*/
public SCATestCaseRunner(Class testClass) {
try {
ClassLoader tccl = Thread.currentThread().getContextClassLoader();
classLoader = testClass.getClassLoader();
if (classLoader instanceof URLClassLoader) {
URL[] urls = ((URLClassLoader)classLoader).getURLs();
classLoader = new URLClassLoader(urls, classLoader.getParent());
} else if (classLoader == tccl || classLoader.getParent() == tccl) {
classLoader = new URLClassLoader(new URL[0], classLoader);
} else {
classLoader = tccl;
}
try {
Thread.currentThread().setContextClassLoader(classLoader);
testCaseClass = Class.forName(testClass.getName(), true, classLoader);
testCase = testCaseClass.newInstance();
ClassLoader testClassLoader = testCaseClass.getClassLoader();
junit3TestCaseClass = Class.forName("junit.framework.TestCase", true, testClassLoader);
testSuiteClass = Class.forName("junit.framework.TestSuite", true, testClassLoader);
Constructor testSuiteConstructor = testSuiteClass.getConstructor(Class.class);
testSuite = testSuiteConstructor.newInstance(testCaseClass);
testResultClass = Class.forName("junit.framework.TestResult", true, testClassLoader);
try {
beforeAnnotation = Class.forName("org.junit.Before", true, testClassLoader);
afterAnnotation = Class.forName("org.junit.After", true, testClassLoader);
beforeClassAnnotation = Class.forName("org.junit.BeforeClass", true, testClassLoader);
afterClassAnnotation = Class.forName("org.junit.AfterClass", true, testClassLoader);
junit4AdapterClass = Class.forName("junit.framework.JUnit4TestAdapter", true, testClassLoader);
} catch (Exception e) {
// Unexpected
throw new AssertionError(e);
}
} finally {
Thread.currentThread().setContextClassLoader(tccl);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Run the test case
*/
public void run() {
ClassLoader tccl = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(classLoader);
if (junit3TestCaseClass.isAssignableFrom(testCaseClass)) {
Object testResult = testResultClass.newInstance();
Method runMethod = testSuiteClass.getMethod("run", testResultClass);
runMethod.invoke(testSuite, testResult);
} else {
Object junit4Adapter = junit4AdapterClass.getConstructor(Class.class).newInstance(testCaseClass);
Object testResult = testResultClass.newInstance();
Method runMethod = junit4AdapterClass.getMethod("run", testResultClass);
runMethod.invoke(junit4Adapter, testResult);
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
Thread.currentThread().setContextClassLoader(tccl);
}
}
/**
* Invoke the setUp method
*/
public void setUp() {
execute("setUp");
}
/**
* Invoke the before methods
*/
public void before() {
execute(beforeAnnotation);
}
/**
* Invoke the beforeClass methods
*/
public void beforeClass() {
execute(beforeClassAnnotation);
}
/**
* Invoke the tearDown method
*/
public void tearDown() {
execute("tearDown");
}
/**
* Invoke the after methods
*/
public void after() {
execute(afterAnnotation);
}
/**
* Invoke the afterClass methods
*/
public void afterClass() {
execute(afterClassAnnotation);
}
/**
* Invoke the specified test method.
*/
public void run(String methodName) {
execute(methodName);
}
/**
* Invoke the methods annotated with the specified annotation.
*/
private void execute(Class<?> annotationClass) {
if (annotationClass == null) {
throw new RuntimeException(new NoSuchMethodException());
}
ClassLoader tccl = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(classLoader);
for (Method method : testCaseClass.getDeclaredMethods()) {
for (Annotation annotation : method.getAnnotations()) {
if (annotation.annotationType() == annotationClass) {
method.invoke(testCase);
}
}
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
Thread.currentThread().setContextClassLoader(tccl);
}
}
/**
* Invoke the specified method
*/
private void execute(String methodName) {
ClassLoader tccl = Thread.currentThread().getContextClassLoader();
try {
Thread.currentThread().setContextClassLoader(classLoader);
Method setUpMethod = testCaseClass.getDeclaredMethod(methodName);
setUpMethod.setAccessible(true);
setUpMethod.invoke(testCase);
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
Thread.currentThread().setContextClassLoader(tccl);
}
}
}
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