byte[] buffer = new byte[6];
        pdis.readFully(buffer, 1, 4);
        assertArrayEquals(new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x00 }, buffer);
    }

    @Test
    public void testReadChar() throws IOException {
        // 0x0041 is 'A'
        byte[] data = new byte[] { 0x00, 0x41, 0x00, 0x00 };
        PacDataInputStream pdis = createInputStream(data);
        assertEquals('A', pdis.readChar());
    }