def test_bitarray_clear():
ba = BitArray(1234)
ba.clear()
assert ba.is_zero()
assert not ba.is_all_on()
assert ba.get_highest_on_bit() == -1
assert ba.get_highest_off_bit() == -1
ba = BitArray.all_on()
ba.clear()
assert ba.is_zero()
assert not ba.is_all_on()
assert ba.get_highest_on_bit() == -1
assert ba.get_highest_off_bit() == -1
def test_bitarray_set_word():
# Non-inverted
expected = 9876 | (123456 << (BitArray.num_bits_per_word * 3))
ba = BitArray(0)
ba.set_word(0, 9876)
ba.set_word(3, 123456)
assert ba.__getstate__() == expected
assert not ba.is_all_on()
# Inverted
ba = BitArray(0)
ba.invert_in_place()
ba.set_word(2, 1234)
full_word = (1 << BitArray.num_bits_per_word) - 1
expected = ~((full_word & ~1234) << (BitArray.num_bits_per_word * 2))
assert ba.__getstate__() == expected
assert not ba.is_all_on()
def test_bitarray_constructor_sparse():
# Create a BitArray from a SparseArray.
ba = BitArray(SparseArray.all_on())
assert ba.is_all_on()
ba = BitArray(SparseArray())
assert ba.is_zero()
sa = SparseArray()
sa.set_range(3, 64)
sa.set_range(0, 1)
sa.clear_range(60, 2)
ba = BitArray(sa)
exp = 0b1111100111111111111111111111111111111111111111111111111111111111001
assert ba.__getstate__() == exp
sa.invert_in_place()
ba = BitArray(sa)
assert ba.__getstate__() == ~exp