def test_write_int(self):
writer = LittleEndianByteArrayByteWriter()
int_to_write = 0xF1F2F3F4
writer.write_int(int_to_write)
self.assertEqual(writer.get_n_bytes_written(),4)
self.assertEqual(writer.data,bytearray([0xF4, 0xF3, 0xF2,0xF1]))
