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import pytest import pandas._testing as tm from pandas.core.arrays import TimedeltaArray class TestAccumulator: def test_accumulators_disallowed(self): # GH#50297 arr = TimedeltaArray._from_sequence(["1D", "2D"], dtype="m8[ns]") with pytest.raises(TypeError, match="cumprod not supported"): arr._accumulate("cumprod") def test_cumsum(self, unit): # GH#50297 dtype = f"m8[{unit}]" arr = TimedeltaArray._from_sequence(["1D", "2D"], dtype=dtype) result = arr._accumulate("cumsum") expected = TimedeltaArray._from_sequence(["1D", "3D"], dtype=dtype) tm.assert_timedelta_array_equal(result, expected)
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