def test_as_populated_list_throws_error_if_clearing_start():
r = RunLengthList([(0, 'foo'), (3, 'bar')])
try:
r.blank_between(0, 2)
except ValueError:
pass
else:
assert False
def test_blank_between_second_argument_None_blanks_to_end():
rl = RunLengthList([(0, 'foo'), (2, 'bar'), (4, 'baz')])
rl.blank_between(1, None)
assert rl.items() == [(0, 'foo')]
def test_RunLengthList_blank_between():
c = RunLengthList([(0, 'FOO'), (2, 'BAR'), (3, 'BAZ'), (4, 'QUX')])
c.blank_between(2, 3)
assert c.items() == [(0, 'FOO'), (3, 'BAZ'), (4, 'QUX')], c.items()
