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Spring Framework example source code file (SpringTestMethod.java)

This example Spring Framework source code file (SpringTestMethod.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

class, class, expectedexception, illegalaccessexception, illegalstateexception, list, method, reflection, springtestmethod, test, test, testclass, testclass, throwable, throwable, util

The Spring Framework SpringTestMethod.java source code

/*
 * 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.junit4;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.After;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.Test.None;
import org.junit.internal.runners.TestClass;

import org.springframework.test.annotation.ExpectedException;
import org.springframework.test.annotation.ProfileValueSource;
import org.springframework.test.annotation.ProfileValueUtils;

/**
 * SpringTestMethod is a custom implementation of JUnit 4.4's
 * {@link org.junit.internal.runners.TestMethod TestMethod}. Due to method and
 * field visibility constraints, the code of TestMethod has been duplicated here
 * instead of subclassing TestMethod directly.
 *
 * <p>SpringTestMethod also provides support for
 * {@link org.springframework.test.annotation.IfProfileValue @IfProfileValue}
 * and {@link ExpectedException @ExpectedException}. See {@link #isIgnored()}
 * and {@link #getExpectedException()} for further details.
 *
 * @author Sam Brannen
 * @since 2.5
 */
class SpringTestMethod {

	private static final Log logger = LogFactory.getLog(SpringTestMethod.class);

	private final Method method;

	private final ProfileValueSource profileValueSource;

	private final TestClass testClass;


	/**
	 * Constructs a test method for the supplied {@link Method method} and
	 * {@link TestClass test class}; and retrieves the configured (or default)
	 * {@link ProfileValueSource}.
	 * @param method The test method
	 * @param testClass the test class
	 */
	public SpringTestMethod(Method method, TestClass testClass) {
		this.method = method;
		this.testClass = testClass;
		this.profileValueSource = ProfileValueUtils.retrieveProfileValueSource(testClass.getJavaClass());
	}


	/**
	 * Determine if this test method is {@link Test#expected() expected} to
	 * throw an exception.
	 */
	public boolean expectsException() {
		return (getExpectedException() != null);
	}

	/**
	 * Get the {@link After @After} methods for this test method.
	 */
	public List<Method> getAfters() {
		return getTestClass().getAnnotatedMethods(After.class);
	}

	/**
	 * Get the {@link Before @Before} methods for this test method.
	 */
	public List<Method> getBefores() {
		return getTestClass().getAnnotatedMethods(Before.class);
	}

	/**
	 * Get the <code>exception that this test method is expected to throw.
	 * <p>Supports both Spring's {@link ExpectedException @ExpectedException(...)}
	 * and JUnit's {@link Test#expected() @Test(expected=...)} annotations, but
	 * not both simultaneously.
	 * @return the expected exception, or <code>null if none was specified
	 */
	public Class<? extends Throwable> getExpectedException() throws IllegalStateException {
		ExpectedException expectedExAnn = getMethod().getAnnotation(ExpectedException.class);
		Test testAnnotation = getMethod().getAnnotation(Test.class);

		Class<? extends Throwable> expectedException = null;
		Class<? extends Throwable> springExpectedException =
				(expectedExAnn != null && expectedExAnn.value() != null ? expectedExAnn.value() : null);
		Class<? extends Throwable> junitExpectedException =
				(testAnnotation != null && testAnnotation.expected() != None.class ? testAnnotation.expected() : null);

		if (springExpectedException != null && junitExpectedException != null) {
			String msg = "Test method [" + getMethod() + "] has been configured with Spring's @ExpectedException(" +
					springExpectedException.getName() + ".class) and JUnit's @Test(expected=" +
					junitExpectedException.getName() + ".class) annotations. " +
					"Only one declaration of an 'expected exception' is permitted per test method.";
			logger.error(msg);
			throw new IllegalStateException(msg);
		}
		else if (springExpectedException != null) {
			expectedException = springExpectedException;
		}
		else if (junitExpectedException != null) {
			expectedException = junitExpectedException;
		}

		return expectedException;
	}

	/**
	 * Get the actual {@link Method method} referenced by this test method.
	 */
	public final Method getMethod() {
		return this.method;
	}

	/**
	 * Get the {@link TestClass test class} for this test method.
	 */
	public final TestClass getTestClass() {
		return this.testClass;
	}

	/**
	 * Get the configured <code>timeout for this test method.
	 * <p>Supports JUnit's {@link Test#timeout() @Test(timeout=...)} annotation.
	 * @return the timeout, or <code>0 if none was specified
	 */
	public long getTimeout() {
		Test testAnnotation = getMethod().getAnnotation(Test.class);
		return (testAnnotation != null && testAnnotation.timeout() > 0 ? testAnnotation.timeout() : 0);
	}

	/**
	 * Convenience method for {@link Method#invoke(Object,Object...) invoking}
	 * the method associated with this test method. Throws exceptions consistent
	 * with {@link Method#invoke(Object,Object...) Method.invoke()}.
	 * @param testInstance the test instance upon which to invoke the method
	 */
	public void invoke(Object testInstance) throws IllegalAccessException, InvocationTargetException {
		getMethod().invoke(testInstance);
	}

	/**
	 * Determine if this test method should be ignored.
	 * @return <code>true if this test method should be ignored
	 * @see ProfileValueUtils#isTestEnabledInThisEnvironment
	 */
	public boolean isIgnored() {
		return (getMethod().isAnnotationPresent(Ignore.class) ||
				!ProfileValueUtils.isTestEnabledInThisEnvironment(
						this.profileValueSource, this.method, this.testClass.getJavaClass()));
	}

	/**
	 * Determine if this test method {@link Test#expected() expects} exceptions
	 * of the type of the supplied <code>exception to be thrown.
	 * @param exception the thrown exception
	 * @return <code>true if the supplied exception was of an expected type
	 */
	public boolean isUnexpected(Throwable exception) {
		return !getExpectedException().isAssignableFrom(exception.getClass());
	}

}

Other Spring Framework examples (source code examples)

Here is a short list of links related to this Spring Framework SpringTestMethod.java source code file:

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