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66 lines
1.7 KiB
66 lines
1.7 KiB
6 months ago
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import numpy as np
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import pytest
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from pandas._libs import lib
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import pandas.util._test_decorators as td
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import pandas as pd
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import pandas._testing as tm
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def assert_block_lengths(x):
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assert len(x) == len(x._mgr.blocks[0].mgr_locs)
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return 0
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def cumsum_max(x):
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x.cumsum().max()
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return 0
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@pytest.mark.parametrize(
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"func",
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[
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cumsum_max,
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pytest.param(assert_block_lengths, marks=td.skip_array_manager_invalid_test),
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],
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)
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def test_mgr_locs_updated(func):
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# https://github.com/pandas-dev/pandas/issues/31802
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# Some operations may require creating new blocks, which requires
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# valid mgr_locs
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df = pd.DataFrame({"A": ["a", "a", "a"], "B": ["a", "b", "b"], "C": [1, 1, 1]})
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result = df.groupby(["A", "B"]).agg(func)
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expected = pd.DataFrame(
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{"C": [0, 0]},
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index=pd.MultiIndex.from_product([["a"], ["a", "b"]], names=["A", "B"]),
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)
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tm.assert_frame_equal(result, expected)
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@pytest.mark.parametrize(
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"binner,closed,expected",
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[
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(
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np.array([0, 3, 6, 9], dtype=np.int64),
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"left",
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np.array([2, 5, 6], dtype=np.int64),
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),
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(
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np.array([0, 3, 6, 9], dtype=np.int64),
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"right",
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np.array([3, 6, 6], dtype=np.int64),
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),
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(np.array([0, 3, 6], dtype=np.int64), "left", np.array([2, 5], dtype=np.int64)),
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(
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np.array([0, 3, 6], dtype=np.int64),
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"right",
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np.array([3, 6], dtype=np.int64),
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),
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],
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)
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def test_generate_bins(binner, closed, expected):
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values = np.array([1, 2, 3, 4, 5, 6], dtype=np.int64)
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result = lib.generate_bins_dt64(values, binner, closed=closed)
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tm.assert_numpy_array_equal(result, expected)
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