then:
        ManifestUtil.parseManifestClasspath(nonexistent) == []
        ManifestUtil.parseManifestClasspath(directory) == []
    }

    def "returns empty classpath for non-jar file"() {
        when:
        def file = tmpDir.createFile('non-jar.zip')
        file << "text"

        then:
        ManifestUtil.parseManifestClasspath(file) == []
    }

        }
    }

    private static void addManifestClasspathFiles(File classpathFile, List<File> classpathFiles) {
        List<URI> classpathUris = ManifestUtil.parseManifestClasspath(classpathFile);
        for (URI classpathUri : classpathUris) {
            addClasspathFile(new File(classpathUri), classpathFiles);
        }
    }

        URI fileUri = file.toURI();
        URI relativeUri = jarFileUri.relativize(fileUri);
        return relativeUri.getRawPath();
    }

    public static List<URI> parseManifestClasspath(File jarFile) {
        List<URI> manifestClasspath = new ArrayList<URI>();
        for (String value : readManifestClasspathString(jarFile)) {
            try {
                URI uri = new URI(value);