def index_adjust(self, index, adjustment):
RunLengthList.index_adjust(self, index, adjustment)
self.adjustments.append((index, adjustment))
def test_RunLengthList_index_adjust_index_collision():
c = RunLengthList([(0, 1), (3, 2)])
c.index_adjust(3, 2)
assert c.items() == [(0, 1), (5, 2)], c.items()
def test_RunlengthList_index_adjust_negative_adjustment_normalises():
c = RunLengthList([(0, 'f'), (2, 'o'), (3, 'b')])
c.index_adjust(1, -2)
assert c.items() == [(0, 'f'), (1, 'b')]
def test_RunLengthList_index_adjust():
c = RunLengthList([(0, 1), (3, 2), (6, 3)])
c.index_adjust(2, 2)
assert c.items() == [(0, 1), (5, 2), (8, 3)], c.items()
