public int readInt3() {
        return byteBuf.readUnsignedMediumLE();
    }
@Test
    void assertReadInt3() {
        when(byteBuf.readUnsignedMediumLE()).thenReturn(1);
        assertThat(new MySQLPacketPayload(byteBuf, StandardCharsets.UTF_8).readInt3(), is(1));
    }