def test_is_not_disjoint(self, CellRange):
cr1 = CellRange("E5:K10")
cr2 = CellRange("D2:F7")
assert cr1.isdisjoint(cr2) is False
def test_isdisjoint(self, CellRange):
cr1 = CellRange("E5:K10")
cr2 = CellRange("A1:C12")
assert cr1.isdisjoint(cr2) is True