def test_concat_bits_empty(self):
# Empty both sides.
self.assertEqual(0, bit_helpers.concat_bits(0, 0, 0, 0))
# Empty RHS.
self.assertEqual(3, bit_helpers.concat_bits(3, 2, 0, 0))
# Empty LHS.
self.assertEqual(3, bit_helpers.concat_bits(0, 0, 3, 2))
def test_concat_bits(self):
x = 0b10
y = 0b011
self.assertEqual(0b10011, bit_helpers.concat_bits(x, 2, y, 3))
def concat(self, other: 'Bits') -> 'Bits':
"""Returns a value that concatenates bits in self with bits in other."""
return Bits(
self.bit_count + other.bit_count,
concat_bits(self.value, self.bit_count, other.value, other.bit_count))