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Groovy example source code file (AllTestSuite.java)

This example Groovy source code file (AllTestSuite.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

alltestsuite, class, compilationfailedexception, compilationfailedexception, empty_args, groovyclassloader, ifilenamefinder, io, ioexception, ioexception, log, logging, runtimeexception, string, string, test, test, util

The Groovy AllTestSuite.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,
 * 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 groovy.util;

import groovy.lang.GroovyClassLoader;
import groovy.lang.Script;
import junit.framework.Test;
import junit.framework.TestSuite;
import org.codehaus.groovy.control.CompilationFailedException;
import org.codehaus.groovy.runtime.ScriptTestAdapter;

import java.io.File;
import java.io.IOException;
import java.util.Collection;
import java.util.Iterator;
import java.util.logging.Logger;

/**
 * AllTestSuite can be used in extension of GroovyTestSuite to execute TestCases written in Groovy
 * from inside a Java IDE.
 * AllTestSuite collects all files below a given directory that comply to a given pattern.
 * From these files, a TestSuite is constructed that can be run via an IDE graphical Test runner.
 * The files are assumed to be Groovy source files and be either a TestCase or a Script that can
 * be wrapped transparently into a TestCase.
 * The directory and the pattern can be set via System properties (see this classes' constants for details.)
 *
 * When setting the loglevel of this class to FINEST, all file loading will be logged.
 *
 * See also groovy.util.AllTestSuiteTest.groovy
 * @author Dierk Koenig based on a prototype by Andrew Glover
 * @author Paul King
 * todo: dk: make FileNameFinder injectable
 */
public class AllTestSuite extends TestSuite {

    /** The System Property to set as base directory for collection of Test Cases.
     * The pattern will be used as an Ant fileset include basedir.
     * Key is "groovy.test.dir".
     * Default value is "./test/".
     */
    public static final String SYSPROP_TEST_DIR = "groovy.test.dir";

    /** The System Property to set as the filename pattern for collection of Test Cases.
     * The pattern will be used as Regular Expression pattern applied with the find
     * operator against each candidate file.path.
     * Key is "groovy.test.pattern".
     * Default value is "Test.groovy".
     */
    public static final String SYSPROP_TEST_PATTERN = "groovy.test.pattern";

    /** The System Property to set as a filename excludes pattern for collection of Test Cases.
     * When non-empty, the pattern will be used as Regular Expression pattern applied with the
     * find operator against each candidate file.path.
     * Key is "groovy.test.excludesPattern".
     * Default value is "".
     */
    public static final String SYSPROP_TEST_EXCLUDES_PATTERN = "groovy.test.excludesPattern";

    private static final Logger LOG = Logger.getLogger(AllTestSuite.class.getName());
    private static final ClassLoader JAVA_LOADER = AllTestSuite.class.getClassLoader();
    private static final GroovyClassLoader GROOVY_LOADER = new GroovyClassLoader(JAVA_LOADER);

    private static final String[] EMPTY_ARGS = new String[]{};
    private static IFileNameFinder finder = null;

    static { // this is only needed since the Groovy Build compiles *.groovy files after *.java files
        try {
            Class finderClass = Class.forName("groovy.util.FileNameFinder");
            finder = (IFileNameFinder) finderClass.newInstance();
        } catch (Exception e) {
            throw new RuntimeException("Cannot find and instantiate class FileNameFinder", e);
        }
    }

    public static Test suite() {
        String basedir = System.getProperty(SYSPROP_TEST_DIR, "./test/");
        String pattern = System.getProperty(SYSPROP_TEST_PATTERN, "**/*Test.groovy");
        String excludesPattern = System.getProperty(SYSPROP_TEST_EXCLUDES_PATTERN, "");
        return suite(basedir, pattern);
    }    

    public static Test suite(String basedir, String pattern) {
        return suite(basedir, pattern, "");
    }

    public static Test suite(String basedir, String pattern, String excludesPattern) {
        AllTestSuite suite = new AllTestSuite();
        String fileName = "";
        try {
            Collection filenames = excludesPattern.length() > 0
                    ? finder.getFileNames(basedir, pattern, excludesPattern)
                    : finder.getFileNames(basedir, pattern);
            for (Iterator iter = filenames.iterator(); iter.hasNext();) {
                fileName = (String) iter.next();
                LOG.finest("trying to load "+ fileName);
                suite.loadTest(fileName);
            }
        } catch (CompilationFailedException e1) {
            e1.printStackTrace();
            throw new RuntimeException("CompilationFailedException when loading "+fileName, e1);
        } catch (IOException e2) {
            throw new RuntimeException("IOException when loading "+fileName, e2);
        }
        return suite;
    }

    protected void loadTest(String fileName) throws CompilationFailedException, IOException {
        Class type = compile(fileName);
        if (!Test.class.isAssignableFrom(type) && Script.class.isAssignableFrom(type)) {
            addTest(new ScriptTestAdapter(type, EMPTY_ARGS));
        } else {
            addTestSuite(type);
        }
    }

    protected Class compile(String fileName) throws CompilationFailedException, IOException {
        return GROOVY_LOADER.parseClass(new File(fileName));
    }
}

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