Ant example source code file (JavacTest.java)

This example Ant source code file (JavacTest.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

ford, javac, javac, javac12, javac13, javactest, javactest, prefect, project, project, slartibartfast, string, string, testcase

The JavacTest.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 org.apache.tools.ant.Project;
import org.apache.tools.ant.taskdefs.compilers.CompilerAdapter;
import org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory;
import org.apache.tools.ant.taskdefs.compilers.Javac12;
import org.apache.tools.ant.taskdefs.compilers.Javac13;
import org.apache.tools.ant.taskdefs.compilers.JavacExternal;
import org.apache.tools.ant.util.JavaEnvUtils;

import junit.framework.TestCase;

/**
 * Testcase for <javac>.
 *
 */
public class JavacTest extends TestCase {

    private Project project;
    private Javac javac;

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

    public void setUp() {
        project = new Project();
        project.init();
        javac = new Javac();
        javac.setProject(project);
    }

    /**
     * Test setting the name of the javac executable.
     */
    public void testForkedExecutableName() {
        assertNull("no fork means no executable", javac.getJavacExecutable());

        project.setProperty("build.compiler", "modern");
        assertNull("no fork means no executable", javac.getJavacExecutable());

        javac.setFork(true);
        assertNotNull("normal fork", javac.getJavacExecutable());
        assertTrue("name should contain \"javac\"",
                   javac.getJavacExecutable().indexOf("javac") > -1);

        project.setProperty("build.compiler", "extJavac");
        javac.setFork(false);
        assertNotNull("fork via property", javac.getJavacExecutable());
        assertTrue("name should contain \"javac\"",
                   javac.getJavacExecutable().indexOf("javac") > -1);

        project.setProperty("build.compiler", "whatever");
        assertNull("no fork and not extJavac means no executable",
                   javac.getJavacExecutable());

        String myJavac = "Slartibartfast";
        javac.setFork(true);
        javac.setExecutable(myJavac);
        assertEquals(myJavac, javac.getJavacExecutable());
    }

    /**
     * Test nested compiler args.
     */
    public void testCompilerArg() {
        String[] args = javac.getCurrentCompilerArgs();
        assertNotNull(args);
        assertEquals("no args", 0, args.length);

        Javac.ImplementationSpecificArgument arg = javac.createCompilerArg();
        String ford = "Ford";
        String prefect = "Prefect";
        String testArg = ford + " " + prefect;
        arg.setValue(testArg);
        args = javac.getCurrentCompilerArgs();
        assertEquals("unconditional single arg", 1, args.length);
        assertEquals(testArg, args[0]);

        arg.setCompiler("jikes");
        args = javac.getCurrentCompilerArgs();
        assertNotNull(args);
        assertEquals("implementation is jikes but build.compiler is null",
                     0, args.length);

        project.setProperty("build.compiler", "jvc");
        args = javac.getCurrentCompilerArgs();
        assertNotNull(args);
        assertEquals("implementation is jikes but build.compiler is jvc",
                     0, args.length);

        project.setProperty("build.compiler", "jikes");
        args = javac.getCurrentCompilerArgs();
        assertEquals("both are jikes", 1, args.length);
        assertEquals(testArg, args[0]);

        arg.setLine(testArg);
        args = javac.getCurrentCompilerArgs();
        assertEquals("split at space", 2, args.length);
        assertEquals(ford, args[0]);
        assertEquals(prefect, args[1]);
    }

    /**
     * Test nested compiler args in the fork="true" and
     * implementation="extJavac" case.
     */
    public void testCompilerArgForForkAndExtJavac() {
        Javac.ImplementationSpecificArgument arg = javac.createCompilerArg();
        String ford = "Ford";
        String prefect = "Prefect";
        String testArg = ford + " " + prefect;
        arg.setValue(testArg);
        arg.setCompiler("extJavac");
        javac.setFork(true);
        String[] args = javac.getCurrentCompilerArgs();
        assertEquals("both are forked javac", 1, args.length);
        assertEquals(testArg, args[0]);
    }

    /**
     * Test compiler attribute.
     */
    public void testCompilerAttribute() {
        // check defaults
        String compiler = javac.getCompiler();
        assertNotNull(compiler);
        if (System.getProperty("build.compiler") != null) {
            assertEquals(System.getProperty("build.compiler"),
                         compiler);
        } else {
            assertTrue("default value",
                       "javac1.1".equals(compiler)
                       || "javac1.2".equals(compiler)
                       || "javac1.3".equals(compiler)
                       || "javac1.4".equals(compiler)
                       || "javac1.5".equals(compiler)
                       || "classic".equals(compiler));
        }

        javac.setFork(true);
        assertNotNull(javac.getCompiler());
        assertEquals("extJavac", javac.getCompiler());
        assertEquals(compiler, javac.getCompilerVersion());

        // check build.compiler provides defaults
        javac = new Javac();
        javac.setProject(project);
        // setUserProperty to override system properties
        project.setUserProperty("build.compiler", "jikes");
        compiler = javac.getCompiler();
        assertNotNull(compiler);
        assertEquals("jikes", compiler);

        javac.setFork(true);
        compiler = javac.getCompiler();
        assertNotNull(compiler);
        assertEquals("jikes", compiler);

        // check attribute overrides build.compiler
        javac.setFork(false);
        javac.setCompiler("jvc");
        compiler = javac.getCompiler();
        assertNotNull(compiler);
        assertEquals("jvc", compiler);

        javac.setFork(true);
        compiler = javac.getCompiler();
        assertNotNull(compiler);
        assertEquals("jvc", compiler);
    }

    public void testCompilerAdapter() {
        if (JavaEnvUtils.isJavaVersion(JavaEnvUtils.JAVA_1_2)
            || JavaEnvUtils.isJavaVersion(JavaEnvUtils.JAVA_1_3)) {
            javac.setCompiler("javac1.1");
        } else {
            javac.setCompiler("javac1.4");
        }

        javac.setDepend(true);
        CompilerAdapter adapter =
            CompilerAdapterFactory.getCompiler(javac.getCompiler(), javac);

        if (JavaEnvUtils.isJavaVersion(JavaEnvUtils.JAVA_1_2)
            || JavaEnvUtils.isJavaVersion(JavaEnvUtils.JAVA_1_3)) {
            assertTrue(adapter instanceof Javac12);
        } else {
            assertTrue(adapter instanceof Javac13);
        }

        javac.setFork(true);
        adapter =
            CompilerAdapterFactory.getCompiler(javac.getCompiler(), javac);
        assertTrue(adapter instanceof JavacExternal);
    }

    public void testSourceNoDefault() {
        assertNull(javac.getSource());
    }

    public void testSourceWithDefault() {
        project.setNewProperty("ant.build.javac.source", "1.4");
        assertEquals("1.4", javac.getSource());
    }

    public void testSourceOverridesDefault() {
        project.setNewProperty("ant.build.javac.source", "1.4");
        javac.setSource("1.5");
        assertEquals("1.5", javac.getSource());
    }

    public void testTargetNoDefault() {
        assertNull(javac.getTarget());
    }

    public void testTargetWithDefault() {
        project.setNewProperty("ant.build.javac.target", "1.4");
        assertEquals("1.4", javac.getTarget());
    }

    public void testTargetOverridesDefault() {
        project.setNewProperty("ant.build.javac.target", "1.4");
        javac.setTarget("1.5");
        assertEquals("1.5", javac.getTarget());
    }
}