Ant example source code file (JavaTest.java)

This example Ant source code file (JavaTest.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 - Ant tags/keywords

and, exception, exception, file, file, fileoutputstream, interruptedexception, io, java, java, outputstreamwriter, security_margin, should, string, string

The JavaTest.java source code

/*
 *  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.tools.ant.taskdefs;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

import org.apache.tools.ant.BuildFileTest;
import org.apache.tools.ant.util.FileUtils;
import org.apache.tools.ant.util.TeeOutputStream;

/**
 * stress out java task
 * */
public class JavaTest extends BuildFileTest {

    private static final int TIME_TO_WAIT = 1;
    // wait 1 second extra to allow for java to start ...
    // this time was OK on a Win NT machine and on nagoya
    private static final int SECURITY_MARGIN = 2000;

    /** Utilities used for file operations */
    private static final FileUtils FILE_UTILS = FileUtils.getFileUtils();

    private boolean runFatalTests=false;

    public JavaTest(String name) {
        super(name);
    }

    /**
     * configure the project.
     * if the property junit.run.fatal.tests is set we run
     * the fatal tests
     */
    public void setUp() {
        configureProject("src/etc/testcases/taskdefs/java.xml");

        //final String propname="tests-classpath.value";
        //String testClasspath=System.getProperty(propname);
        //System.out.println("Test cp="+testClasspath);
        String propname="tests-classpath.value";
        String runFatal=System.getProperty("junit.run.fatal.tests");
        if(runFatal!=null)
            runFatalTests=true;
    }

    public void tearDown() {
        // remove log file from testSpawn
        project.executeTarget("cleanup");
    }

    public void testNoJarNoClassname(){
        expectBuildExceptionContaining("testNoJarNoClassname",
            "parameter validation",
            "Classname must not be null.");
    }

    public void testJarNoFork() {
        expectBuildExceptionContaining("testJarNoFork",
            "parameter validation",
            "Cannot execute a jar in non-forked mode. "
                + "Please set fork='true'. ");
    }

    public void testJarAndClassName() {
        expectBuildException("testJarAndClassName",
            "Should not be able to set both classname AND jar");
    }


    public void testClassnameAndJar() {
        expectBuildException("testClassnameAndJar",
            "Should not be able to set both classname AND jar");
    }

    public void testRun() {
        executeTarget("testRun");
    }



    /** this test fails but we ignore the return value;
     *  we verify that failure only matters when failonerror is set
     */
    public void testRunFail() {
        if(runFatalTests) {
            executeTarget("testRunFail");
        }
    }

    public void testRunFailFoe() {
        if(runFatalTests) {
            expectBuildExceptionContaining("testRunFailFoe",
                "java failures being propagated",
                "Java returned:");
        }
}

    public void testRunFailFoeFork() {
        expectBuildExceptionContaining("testRunFailFoeFork",
            "java failures being propagated",
            "Java returned:");
    }

    public void testExcepting() {
        expectLogContaining("testExcepting",
                            "Exception raised inside called program");
    }

    public void testExceptingFork() {
        expectLogContaining("testExceptingFork",
                            "Java Result:");
    }

    public void testExceptingFoe() {
        expectBuildExceptionContaining("testExceptingFoe",
            "passes exception through",
            "Exception raised inside called program");
    }

    public void testExceptingFoeFork() {
        expectBuildExceptionContaining("testExceptingFoeFork",
            "exceptions turned into error codes",
            "Java returned:");
    }

    public void testResultPropertyZero() {
        executeTarget("testResultPropertyZero");
        assertEquals("0",project.getProperty("exitcode"));
    }

    public void testResultPropertyNonZero() {
        executeTarget("testResultPropertyNonZero");
        assertEquals("2",project.getProperty("exitcode"));
    }

    public void testResultPropertyZeroNoFork() {
        executeTarget("testResultPropertyZeroNoFork");
        assertEquals("0",project.getProperty("exitcode"));
    }

    public void testResultPropertyNonZeroNoFork() {
        executeTarget("testResultPropertyNonZeroNoFork");
         assertEquals("-1",project.getProperty("exitcode"));
     }

    public void testRunFailWithFailOnError() {
        expectBuildExceptionContaining("testRunFailWithFailOnError",
            "non zero return code",
            "Java returned:");
    }

    public void testRunSuccessWithFailOnError() {
        executeTarget("testRunSuccessWithFailOnError");
    }

    public void testSpawn() {
        File logFile = FILE_UTILS.createTempFile("spawn","log", project.getBaseDir());
        // this is guaranteed by FileUtils#createTempFile
        assertTrue("log file not existing", !logFile.exists());
        project.setProperty("logFile", logFile.getAbsolutePath());
        project.setProperty("timeToWait", Long.toString(TIME_TO_WAIT));
        project.executeTarget("testSpawn");
        try {
            Thread.sleep(TIME_TO_WAIT * 1000 + SECURITY_MARGIN);
        } catch (Exception ex) {
            System.out.println("my sleep was interrupted");
        }
        // let's be nice with the next generation of developers
        if (!logFile.exists()) {
            System.out.println("suggestion: increase the constant"
            + " SECURITY_MARGIN to give more time for java to start.");
        }
        assertTrue("log file exists", logFile.exists());
    }

    public void testRedirect1() {
        executeTarget("redirect1");
    }

    public void testRedirect2() {
        executeTarget("redirect2");
    }

    public void testRedirect3() {
        executeTarget("redirect3");
    }

    public void testRedirector1() {
        executeTarget("redirector1");
    }

    public void testRedirector2() {
        executeTarget("redirector2");
    }

    /**
     * entry point class with no dependencies other
     * than normal JRE runtime
     */
    public static class EntryPoint {

    /**
     * this entry point is used by the java.xml tests to
     * generate failure strings to handle
     * argv[0] = exit code (optional)
     * argv[1] = string to print to System.out (optional)
     * argv[1] = string to print to System.err (optional)
     */
        public static void main(String[] argv) {
            int exitCode=0;
            if(argv.length>0) {
                try {
                    exitCode=Integer.parseInt(argv[0]);
                } catch(NumberFormatException nfe) {
                    exitCode=-1;
                }
            }
            if(argv.length>1) {
                System.out.println(argv[1]);
            }
            if(argv.length>2) {
                System.err.println(argv[2]);
            }
            if(exitCode!=0) {
                System.exit(exitCode);
            }
        }
    }

    /**
     * entry point class with no dependencies other
     * than normal JRE runtime
     */
    public static class ExceptingEntryPoint {

        /**
         * throw a run time exception which does not need
         * to be in the signature of the entry point
         */
        public static void main(String[] argv) {
            throw new NullPointerException("Exception raised inside called program");
        }
    }
    /**
     * test class for spawn
     */
    public static class SpawnEntryPoint {
        public static void main(String [] argv) {
            int sleepTime = 10;
            String logFile = "spawn.log";
            if (argv.length >= 1) {
                sleepTime = Integer.parseInt(argv[0]);
            }
            if (argv.length >= 2)
            {
                logFile = argv[1];
            }
            OutputStreamWriter out = null;
            try {
                Thread.sleep(sleepTime * 1000);
            } catch (InterruptedException ex) {
                System.out.println("my sleep was interrupted");
            }

            try {
                File dest = new File(logFile);
                FileOutputStream fos = new FileOutputStream(dest);
                out = new OutputStreamWriter(fos);
                out.write("bye bye\n");
            } catch (Exception ex) {}
            finally {
                try {out.close();} catch (IOException ioe) {}}

        }
    }

    /**
     * entry point class to pipe System.in to the specified stream:
     * "out", "err", or "both".  If none specified, swallow the input.
     */
    public static class PipeEntryPoint {

        /**
         * pipe input to specified output
         */
        public static void main(String[] args) {
            OutputStream os = null;
            if (args.length > 0) {
                if ("out".equalsIgnoreCase(args[0])) {
                    os = System.out;
                } else if ("err".equalsIgnoreCase(args[0])) {
                    os = System.err;
                } else if ("both".equalsIgnoreCase(args[0])) {
                    os = new TeeOutputStream(System.out, System.err);
                }
            }
            if (os != null) {
                Thread t = new Thread(new StreamPumper(System.in, os, true));
                t.start();
                try {
                    t.join();
                } catch (InterruptedException eyeEx) {
                }
            }
        }
    }
}