cos.write(data, 2, 3); // Write bytes at index 2, 3, 4
        assertTrue(cos.isInMemory());
        cos.close();
    }

    @Test
    public void testWriteWithOffsetAndLengthExceedingThreshold() throws IOException {
        // Test write(byte[], int, int) exceeding threshold
        ContentOutputStream cos = new ContentOutputStream(5, Curl.tmpDir);