public String getContentAsString() {
        final byte[] bytes = new byte[4096];
        try (BufferedInputStream bis = new BufferedInputStream(getContentAsStream());
                ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
            int length = bis.read(bytes);
            while (length != -1) {
                if (length != 0) {
                    baos.write(bytes, 0, length);
                }

public class ContentCache implements Closeable {

    protected static final Logger logger = Logger.getLogger(ContentCache.class.getName());

    private final byte[] data;

    private final File file;

    public ContentCache(final byte[] data) {
        this.data = data;
        this.file = null;
    }

    public ContentCache(final File file) {
        this.data = null;
        this.file = file;
    }

        public int getResponseCode() throws IOException {
            return 200;
        }

        @Override
        public InputStream getInputStream() throws IOException {
            return new ByteArrayInputStream(new byte[100]); // dummy payload
        }
    }

    @Test
    public void test_TmpFileHasBeenDeletedAfterResponseWasClosed() throws Exception {
        // ## Arrange ##

        cos.write(new byte[] { 0, 1, 2, 3, 4 });
        assertFalse(cos.done);
        assertTrue(cos.isInMemory());
        cos.close();
        assertFalse(cos.done);
    }

    @Test
    public void inFile() throws IOException {
        ContentOutputStream cos = new ContentOutputStream(10, Curl.tmpDir);
        cos.write(new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 });

                final byte[] bytes = new byte[4096];
                int length = bis.read(bytes);
                while (length != -1) {
                    if (length != 0) {
                        final int len = length;
                        logger.fine(() -> {
                            try {
                                return "<<< " + new String(bytes, 0, len, encoding);