def test_is_not_subset(self, CellRange):
cr1 = CellRange("E5:K10")
cr2 = CellRange("D4:M8")
assert cr2.issubset(cr1) is False
def test_issubset(self, CellRange):
cr1 = CellRange("E5:K10")
cr2 = CellRange("F6:J8")
assert cr2.issubset(cr1) is True
