when:
        def classpathFiles = [tmpDir.file('mydir/jar one.jar'), tmpDir.file('mydir/nested dir/jar two.jar')]

        then:
        ManifestUtil.createManifestClasspath(jarFile, classpathFiles) == "jar%20one.jar nested%20dir/jar%20two.jar";
    }

    def "returns empty classpath list for missing file or directory"() {
        when:
        def nonexistent = new File("does no exist");

    /**
     * A compile operation. It should return a File where classes are compiled to.
     */
    protected abstract File compile(File workspace);

    /**
     * Provides a File where instrumented output will be written to.
     */
    protected abstract File instrumentedOutput(File workspace);

    @Override

    def "#desc can handle symlinks"() {
        def buildScript = file("build.gradle")
        def baseDir = file('build')
        baseDir.file('file').text = 'some contents'
        def symlinked = baseDir.file('symlinked')
        symlinked.text = 'target of symlink'
        baseDir.file('symlink').createLink(symlinked)

        buildScript << """
            def baseDir = new File("${escapeString(baseDir)}")

        else file

    private
    fun maybeRelativize(file: File): File =
        if (!file.isAbsolute) file else File(GFileUtils.relativePathOf(file, rootDirectory))

    private
    fun wildcardsToRegexPatternString(pathWithWildcards: String): String {
        fun String.runIfNotEmpty(action: String.() -> String): String =
            if (this.isEmpty()) this else action()

            }
        """

        file("plugin1.gradle") << """
            task sayMessageFrom1 { doLast { println new pkg.Thing().getMessage() } }
            apply from: 'plugin2.gradle'
        """

        file("plugin2.gradle") << """
            task sayMessageFrom2 { doLast { println new pkg.Thing().getMessage() } }
            apply from: 'plugin3.gradle'
        """

        file("plugin3.gradle") << """

                ProcessGroovyMethodsExecute.execute("some string", envpList, project.file("test"));

                ProcessGroovyMethodsExecute.execute(commandArray);
                ProcessGroovyMethodsExecute.execute(commandArray, envpArray, project.file("test"));
                ProcessGroovyMethodsExecute.execute(commandArray, envpList, project.file("test"));

    }

    @Override
    public File newTemporaryDirectory(String... path) {
        File dir = newTemporaryFile(path);
        forceMkdir(dir);
        return dir;
    }

    @Override
    public Factory<File> temporaryDirectoryFactory(final String... path) {
        return new Factory<File>() {
            @Nullable
            @Override
            public File create() {
                return newTemporaryDirectory(path);

        String resourceName = getClasspathManifestName(moduleName);
        Set<File> implementationClasspath = new LinkedHashSet<>();
        findImplementationClasspath(moduleName, implementationClasspath);
        for (File file : implementationClasspath) {
            if (file.isDirectory()) {
                File propertiesFile = new File(file, resourceName);
                if (propertiesFile.isFile()) {

        assert !filteredContents

        def tmpDir = dir.file(".tmp")
        if (tmpDir.exists()) {
            tmpDir.assertIsEmptyDir()
        }
    }

    private void printFileTree(File dir) {
        def list = []
        if (dir.exists()) {
            dir.eachFileRecurse { file ->
                list << file
            }
        }

        this.owner = owner;
        this.artifact = artifact;
        this.artifactId = artifactId;
        this.file = file;
        this.fileSource = calculatedValueFactory.create(Describables.of(artifactId), file);
        this.builtBy = builtBy;