public void testOpenBufferedStream() throws IOException {
    InputStream in = source.openBufferedStream();
    assertTrue(source.wasStreamOpened());
    assertFalse(source.wasStreamClosed());

    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ByteStreams.copy(in, out);
    in.close();
    out.close();

    assertTrue(source.wasStreamClosed());
    assertArrayEquals(bytes, out.toByteArray());
  }

    assertThrows(IndexOutOfBoundsException.class, () -> hasher.putBytes(new byte[8], 0, -1));
  }

  private static final class TestHasher extends AbstractByteHasher {

    private final ByteArrayOutputStream out = new ByteArrayOutputStream();

    @Override
    protected void update(byte b) {
      out.write(b);
    }

    @Override
    protected void update(byte[] b, int off, int len) {

        this.mechanism = mechanism;
    }

    @Override
    public byte[] toByteArray() {
        try {
            final ByteArrayOutputStream collector = new ByteArrayOutputStream();
            final ASN1OutputStream der = ASN1OutputStream.create(collector, ASN1Encoding.DER);
            final ASN1EncodableVector fields = new ASN1EncodableVector();

                }
            });
        }

        void checkVersion(Project project, String tool, Pattern versionRegex, int... minVersion) {
            ByteArrayOutputStream pipe = new ByteArrayOutputStream();
            project.exec(spec -> {
                spec.setCommandLine(tool, "--version");
                spec.setStandardOutput(pipe);
            });

     * @param exception the exception to append
     * @return the updated buffer
     */
    protected StringBuilder appendException(final StringBuilder buf, final Exception exception) {
        try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
                PrintWriter writer = new PrintWriter(baos, false, Constants.CHARSET_UTF_8)) {
            exception.printStackTrace(writer);
            writer.flush();

    }

    private static String readFully(InputStream inputStream) throws IOException {
        try (InputStream input = inputStream; ByteArrayOutputStream out = new ByteArrayOutputStream()) {
            byte[] buf = new byte[8192];
            int read;
            while ((read = input.read(buf)) >= 0) {
                out.write(buf, 0, read);
            }

    static String srcString = "ABCDEFGHIJKLMN";

    static String urlString = "あいうえお";

    InputStream is = new ByteArrayInputStream(srcBytes);

    ByteArrayOutputStream os = new ByteArrayOutputStream();

    Reader reader = new StringReader(srcString);

    StringWriter writer = new StringWriter();

    StringBuilder builder = new StringBuilder();

        int code = p.waitFor();
        return new ExecResult(code, out, err);
    }

    private static String readFully(InputStream in) throws IOException {
        try (InputStream input = in; ByteArrayOutputStream out = new ByteArrayOutputStream()) {
            byte[] buf = new byte[8192];
            int read;
            while ((read = input.read(buf)) >= 0) {
                out.write(buf, 0, read);
            }

    /**
     * A buffer that will contain the output of the ant code run,
     * if the output was not already written directly to stdout.
     */
    public final ByteArrayOutputStream outputBuffer = new ByteArrayOutputStream()

    @Inject
    protected FileSystemOperations getFileSystemOperations() {
        throw new UnsupportedOperationException();
    }

    @TaskAction
    final void executeTask() {

        }
    }

    @Test
    public void test_main_withHelp() {
        // Test main method with help option
        PrintStream originalErr = System.err;
        try {
            ByteArrayOutputStream errContent = new ByteArrayOutputStream();
            System.setErr(new PrintStream(errContent));

            String[] args = { "--help" };
            // Note: main calls System.exit, so we can't test it directly