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Groovy example source code file (GroovyTestSuite.java)

This example Groovy source code file (GroovyTestSuite.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 - Groovy tags/keywords

class, exception, exception, file, groovy, groovyclassloader, groovytestsuite, groovytestsuite, io, no, runtimeexception, runtimeexception, scripttestadapter, string, string

The Groovy GroovyTestSuite.java source code

 * Copyright 2003-2007 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,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package groovy.util;

import groovy.lang.GroovyClassLoader;
import groovy.lang.Script;
import junit.framework.Test;
import junit.framework.TestSuite;
import junit.textui.TestRunner;
import org.codehaus.groovy.runtime.ScriptTestAdapter;

import java.io.File;

 * A TestSuite which will run a Groovy unit test case inside any Java IDE
 * either as a unit test case or as an application.
 * <p/>
 * You can specify the GroovyUnitTest to run by running this class as an application
 * and specifying the script to run on the command line.
 * <p/>
 * <code>
 * java groovy.util.GroovyTestSuite src/test/Foo.groovy
 * </code>
 * <p/>
 * Or to run the test suite as a unit test suite in an IDE you can use
 * the 'test' system property to define the test script to run.
 * e.g. pass this into the JVM when the unit test plugin runs...
 * <p/>
 * <code>
 * -Dtest=src/test/Foo.groovy
 * </code>
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 18733 $
public class GroovyTestSuite extends TestSuite {

    protected static String file = null;

    protected final GroovyClassLoader loader = new GroovyClassLoader(GroovyTestSuite.class.getClassLoader());

    public static void main(String[] args) {
        if (args.length > 0) {
            file = args[0];

    public static Test suite() {
        GroovyTestSuite suite = new GroovyTestSuite();
        try {
        } catch (Exception e) {
            throw new RuntimeException("Could not create the test suite: " + e, e);
        return suite;

    public void loadTestSuite() throws Exception {
        String fileName = System.getProperty("test", file);
        if (fileName == null) {
            throw new RuntimeException("No filename given in the 'test' system property so cannot run a Groovy unit test");
        System.out.println("Compiling: " + fileName);
        Class type = compile(fileName);
        String[] args = {};
        if (!Test.class.isAssignableFrom(type) && Script.class.isAssignableFrom(type)) {
            // let's treat the script as a Test
            addTest(new ScriptTestAdapter(type, args));
        } else {

    public Class compile(String fileName) throws Exception {
        return loader.parseClass(new File(fileName));

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