cos.write(new byte[] {});
        assertTrue(cos.isInMemory());
        assertFalse(cos.done);
        cos.close();
    }

    @Test
    public void testSingleByteWrites() throws IOException {
        // Writing one byte at a time
        ContentOutputStream cos = new ContentOutputStream(5, Curl.tmpDir);
        for (int i = 0; i < 3; i++) {
            cos.write(i);
        }