def test_does_not_modify(self):
p = b"ab"
l = b"abc"
assert util.cut_off_prefix(p, l) == b"c"
assert l == b"abc"
assert p == b"ab"
def test_falsy_error(self, prefix, label):
with pytest.raises(AssertionError):
util.cut_off_prefix(prefix, label)
def test_prefix_cut_off(self):
assert util.cut_off_prefix(b"ab", b"abc") == b"c"
def test_equals_empyt(self):
assert util.cut_off_prefix(b"ab", b"ab") == b""
def test_no_prefix_error(self):
with pytest.raises(AssertionError):
util.cut_off_prefix(b"ab", "bb")