src/testcases/org/apache/tools/ant/taskdefs/JavacTest.java

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package org.apache.tools.ant.taskdefs;

import org.apache.tools.ant.Project;

import junit.framework.TestCase;

/**
 * Testcase for <javac>.
 *
 * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
 * @version $Revision$ $Date$
 */
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(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.setImplementation("jikes");
        args = javac.getCurrentCompilerArgs();
        assertNotNull(args);
        assertEquals("implementation is jikes but build.compiler is null", 
                     0, args.length);

        project.setProperty("build.compiler", "classic");
        args = javac.getCurrentCompilerArgs();
        assertNotNull(args);
        assertEquals("implementation is jikes but build.compiler is classic", 
                     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.setImplementation("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);
        assertTrue("default value", 
                   "modern".equals(compiler) || "classic".equals(compiler));

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

        // check build.compiler provides defaults
        javac.setFork("false");
        project.setNewProperty("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);
    }

}