for (int i = 0; i < 5; i++) {
            assertEquals(data[i], buffer[i]);
        }
    }

    @Test
    @DisplayName("readn should handle partial reads")
    void testReadnPartial() throws IOException {
        byte[] buffer = new byte[10];
        byte[] data = { 1, 2, 3 };
        ByteArrayInputStream bais = new ByteArrayInputStream(data);