def test_write_long(self):
writer = LittleEndianByteArrayByteWriter()
long_to_write = 0xF1F2F3F4F5F6F7F8
writer.write_long(long_to_write)
self.assertEqual(writer.get_n_bytes_written(),8)
self.assertEqual(writer.data,bytearray([0xF8,0xF7, 0xF6, 0xF5, 0xF4, 0xF3, 0xF2,0xF1]))
