ContentOutputStream cos = new ContentOutputStream(10, Curl.tmpDir);
        cos.write(new byte[9]);
        assertTrue(cos.isInMemory());
        cos.close();
    }

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