406 lines
13 KiB
Python
406 lines
13 KiB
Python
"""
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This file contains a minimal set of tests for compliance with the extension
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array interface test suite, and should contain no other tests.
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The test suite for the full functionality of the array is located in
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`pandas/tests/arrays/`.
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The tests in this file are inherited from the BaseExtensionTests, and only
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minimal tweaks should be applied to get the tests passing (by overwriting a
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parent method).
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Additional tests should either be added to one of the BaseExtensionTests
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classes (if they are relevant for the extension interface for all dtypes), or
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be added to the array-specific tests in `pandas/tests/arrays/`.
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"""
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import numpy as np
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import pytest
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import pandas as pd
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import pandas._testing as tm
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from pandas.core.arrays.boolean import BooleanDtype
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from pandas.tests.extension import base
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def make_data():
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return [True, False] * 4 + [np.nan] + [True, False] * 44 + [np.nan] + [True, False]
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@pytest.fixture
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def dtype():
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return BooleanDtype()
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@pytest.fixture
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def data(dtype):
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return pd.array(make_data(), dtype=dtype)
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@pytest.fixture
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def data_for_twos(dtype):
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return pd.array(np.ones(100), dtype=dtype)
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@pytest.fixture
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def data_missing(dtype):
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return pd.array([np.nan, True], dtype=dtype)
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@pytest.fixture
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def data_for_sorting(dtype):
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return pd.array([True, True, False], dtype=dtype)
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@pytest.fixture
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def data_missing_for_sorting(dtype):
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return pd.array([True, np.nan, False], dtype=dtype)
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@pytest.fixture
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def na_cmp():
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# we are pd.NA
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return lambda x, y: x is pd.NA and y is pd.NA
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@pytest.fixture
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def na_value():
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return pd.NA
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@pytest.fixture
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def data_for_grouping(dtype):
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b = True
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a = False
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na = np.nan
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return pd.array([b, b, na, na, a, a, b], dtype=dtype)
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class TestDtype(base.BaseDtypeTests):
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pass
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class TestInterface(base.BaseInterfaceTests):
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pass
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class TestConstructors(base.BaseConstructorsTests):
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pass
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class TestGetitem(base.BaseGetitemTests):
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pass
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class TestSetitem(base.BaseSetitemTests):
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pass
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class TestIndex(base.BaseIndexTests):
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pass
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class TestMissing(base.BaseMissingTests):
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pass
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class TestArithmeticOps(base.BaseArithmeticOpsTests):
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implements = {"__sub__", "__rsub__"}
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def check_opname(self, s, op_name, other, exc=None):
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# overwriting to indicate ops don't raise an error
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exc = None
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if op_name.strip("_").lstrip("r") in ["pow", "truediv", "floordiv"]:
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# match behavior with non-masked bool dtype
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exc = NotImplementedError
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super().check_opname(s, op_name, other, exc=exc)
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def _check_op(self, obj, op, other, op_name, exc=NotImplementedError):
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if exc is None:
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if op_name in self.implements:
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msg = r"numpy boolean subtract"
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with pytest.raises(TypeError, match=msg):
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op(obj, other)
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return
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result = op(obj, other)
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expected = self._combine(obj, other, op)
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if op_name in (
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"__floordiv__",
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"__rfloordiv__",
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"__pow__",
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"__rpow__",
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"__mod__",
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"__rmod__",
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):
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# combine keeps boolean type
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expected = expected.astype("Int8")
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elif op_name in ("__truediv__", "__rtruediv__"):
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# combine with bools does not generate the correct result
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# (numpy behaviour for div is to regard the bools as numeric)
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expected = self._combine(obj.astype(float), other, op)
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expected = expected.astype("Float64")
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if op_name == "__rpow__":
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# for rpow, combine does not propagate NaN
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expected[result.isna()] = np.nan
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self.assert_equal(result, expected)
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else:
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with pytest.raises(exc):
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op(obj, other)
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@pytest.mark.xfail(
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reason="Inconsistency between floordiv and divmod; we raise for floordiv "
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"but not for divmod. This matches what we do for non-masked bool dtype."
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)
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def test_divmod_series_array(self, data, data_for_twos):
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super().test_divmod_series_array(data, data_for_twos)
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@pytest.mark.xfail(
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reason="Inconsistency between floordiv and divmod; we raise for floordiv "
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"but not for divmod. This matches what we do for non-masked bool dtype."
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)
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def test_divmod(self, data):
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super().test_divmod(data)
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class TestComparisonOps(base.BaseComparisonOpsTests):
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def check_opname(self, s, op_name, other, exc=None):
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# overwriting to indicate ops don't raise an error
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super().check_opname(s, op_name, other, exc=None)
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class TestReshaping(base.BaseReshapingTests):
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pass
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class TestMethods(base.BaseMethodsTests):
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@pytest.mark.parametrize("na_sentinel", [-1, -2])
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def test_factorize(self, data_for_grouping, na_sentinel):
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# override because we only have 2 unique values
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if na_sentinel == -1:
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msg = "Specifying `na_sentinel=-1` is deprecated"
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else:
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msg = "Specifying the specific value to use for `na_sentinel` is deprecated"
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with tm.assert_produces_warning(FutureWarning, match=msg):
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labels, uniques = pd.factorize(data_for_grouping, na_sentinel=na_sentinel)
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expected_labels = np.array(
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[0, 0, na_sentinel, na_sentinel, 1, 1, 0], dtype=np.intp
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)
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expected_uniques = data_for_grouping.take([0, 4])
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tm.assert_numpy_array_equal(labels, expected_labels)
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self.assert_extension_array_equal(uniques, expected_uniques)
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def test_combine_le(self, data_repeated):
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# override because expected needs to be boolean instead of bool dtype
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orig_data1, orig_data2 = data_repeated(2)
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s1 = pd.Series(orig_data1)
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s2 = pd.Series(orig_data2)
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result = s1.combine(s2, lambda x1, x2: x1 <= x2)
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expected = pd.Series(
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[a <= b for (a, b) in zip(list(orig_data1), list(orig_data2))],
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dtype="boolean",
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)
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self.assert_series_equal(result, expected)
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val = s1.iloc[0]
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result = s1.combine(val, lambda x1, x2: x1 <= x2)
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expected = pd.Series([a <= val for a in list(orig_data1)], dtype="boolean")
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self.assert_series_equal(result, expected)
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def test_searchsorted(self, data_for_sorting, as_series):
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# override because we only have 2 unique values
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data_for_sorting = pd.array([True, False], dtype="boolean")
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b, a = data_for_sorting
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arr = type(data_for_sorting)._from_sequence([a, b])
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if as_series:
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arr = pd.Series(arr)
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assert arr.searchsorted(a) == 0
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assert arr.searchsorted(a, side="right") == 1
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assert arr.searchsorted(b) == 1
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assert arr.searchsorted(b, side="right") == 2
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result = arr.searchsorted(arr.take([0, 1]))
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expected = np.array([0, 1], dtype=np.intp)
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tm.assert_numpy_array_equal(result, expected)
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# sorter
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sorter = np.array([1, 0])
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assert data_for_sorting.searchsorted(a, sorter=sorter) == 0
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def test_argmin_argmax(self, data_for_sorting, data_missing_for_sorting):
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# override because there are only 2 unique values
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# data_for_sorting -> [B, C, A] with A < B < C -> here True, True, False
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assert data_for_sorting.argmax() == 0
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assert data_for_sorting.argmin() == 2
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# with repeated values -> first occurrence
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data = data_for_sorting.take([2, 0, 0, 1, 1, 2])
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assert data.argmax() == 1
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assert data.argmin() == 0
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# with missing values
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# data_missing_for_sorting -> [B, NA, A] with A < B and NA missing.
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assert data_missing_for_sorting.argmax() == 0
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assert data_missing_for_sorting.argmin() == 2
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class TestCasting(base.BaseCastingTests):
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pass
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class TestGroupby(base.BaseGroupbyTests):
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"""
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Groupby-specific tests are overridden because boolean only has 2
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unique values, base tests uses 3 groups.
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"""
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def test_grouping_grouper(self, data_for_grouping):
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df = pd.DataFrame(
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{"A": ["B", "B", None, None, "A", "A", "B"], "B": data_for_grouping}
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)
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gr1 = df.groupby("A").grouper.groupings[0]
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gr2 = df.groupby("B").grouper.groupings[0]
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tm.assert_numpy_array_equal(gr1.grouping_vector, df.A.values)
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tm.assert_extension_array_equal(gr2.grouping_vector, data_for_grouping)
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@pytest.mark.parametrize("as_index", [True, False])
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def test_groupby_extension_agg(self, as_index, data_for_grouping):
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df = pd.DataFrame({"A": [1, 1, 2, 2, 3, 3, 1], "B": data_for_grouping})
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result = df.groupby("B", as_index=as_index).A.mean()
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_, uniques = pd.factorize(data_for_grouping, sort=True)
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if as_index:
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index = pd.Index(uniques, name="B")
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expected = pd.Series([3.0, 1.0], index=index, name="A")
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self.assert_series_equal(result, expected)
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else:
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expected = pd.DataFrame({"B": uniques, "A": [3.0, 1.0]})
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self.assert_frame_equal(result, expected)
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def test_groupby_agg_extension(self, data_for_grouping):
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# GH#38980 groupby agg on extension type fails for non-numeric types
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df = pd.DataFrame({"A": [1, 1, 2, 2, 3, 3, 1], "B": data_for_grouping})
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expected = df.iloc[[0, 2, 4]]
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expected = expected.set_index("A")
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result = df.groupby("A").agg({"B": "first"})
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self.assert_frame_equal(result, expected)
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result = df.groupby("A").agg("first")
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self.assert_frame_equal(result, expected)
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result = df.groupby("A").first()
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self.assert_frame_equal(result, expected)
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def test_groupby_extension_no_sort(self, data_for_grouping):
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df = pd.DataFrame({"A": [1, 1, 2, 2, 3, 3, 1], "B": data_for_grouping})
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result = df.groupby("B", sort=False).A.mean()
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_, index = pd.factorize(data_for_grouping, sort=False)
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index = pd.Index(index, name="B")
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expected = pd.Series([1.0, 3.0], index=index, name="A")
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self.assert_series_equal(result, expected)
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def test_groupby_extension_transform(self, data_for_grouping):
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valid = data_for_grouping[~data_for_grouping.isna()]
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df = pd.DataFrame({"A": [1, 1, 3, 3, 1], "B": valid})
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result = df.groupby("B").A.transform(len)
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expected = pd.Series([3, 3, 2, 2, 3], name="A")
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self.assert_series_equal(result, expected)
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def test_groupby_extension_apply(self, data_for_grouping, groupby_apply_op):
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df = pd.DataFrame({"A": [1, 1, 2, 2, 3, 3, 1], "B": data_for_grouping})
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df.groupby("B", group_keys=False).apply(groupby_apply_op)
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df.groupby("B", group_keys=False).A.apply(groupby_apply_op)
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df.groupby("A", group_keys=False).apply(groupby_apply_op)
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df.groupby("A", group_keys=False).B.apply(groupby_apply_op)
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def test_groupby_apply_identity(self, data_for_grouping):
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df = pd.DataFrame({"A": [1, 1, 2, 2, 3, 3, 1], "B": data_for_grouping})
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result = df.groupby("A").B.apply(lambda x: x.array)
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expected = pd.Series(
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[
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df.B.iloc[[0, 1, 6]].array,
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df.B.iloc[[2, 3]].array,
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df.B.iloc[[4, 5]].array,
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],
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index=pd.Index([1, 2, 3], name="A"),
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name="B",
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)
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self.assert_series_equal(result, expected)
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def test_in_numeric_groupby(self, data_for_grouping):
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df = pd.DataFrame(
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{
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"A": [1, 1, 2, 2, 3, 3, 1],
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"B": data_for_grouping,
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"C": [1, 1, 1, 1, 1, 1, 1],
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}
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)
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result = df.groupby("A").sum().columns
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if data_for_grouping.dtype._is_numeric:
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expected = pd.Index(["B", "C"])
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else:
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expected = pd.Index(["C"])
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tm.assert_index_equal(result, expected)
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@pytest.mark.parametrize("min_count", [0, 10])
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def test_groupby_sum_mincount(self, data_for_grouping, min_count):
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df = pd.DataFrame({"A": [1, 1, 2, 2, 3, 3, 1], "B": data_for_grouping})
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result = df.groupby("A").sum(min_count=min_count)
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if min_count == 0:
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expected = pd.DataFrame(
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{"B": pd.array([3, 0, 0], dtype="Int64")},
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index=pd.Index([1, 2, 3], name="A"),
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)
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tm.assert_frame_equal(result, expected)
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else:
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expected = pd.DataFrame(
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{"B": pd.array([pd.NA] * 3, dtype="Int64")},
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index=pd.Index([1, 2, 3], name="A"),
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)
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tm.assert_frame_equal(result, expected)
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class TestNumericReduce(base.BaseNumericReduceTests):
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def check_reduce(self, s, op_name, skipna):
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result = getattr(s, op_name)(skipna=skipna)
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expected = getattr(s.astype("float64"), op_name)(skipna=skipna)
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# override parent function to cast to bool for min/max
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if np.isnan(expected):
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expected = pd.NA
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elif op_name in ("min", "max"):
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expected = bool(expected)
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tm.assert_almost_equal(result, expected)
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class TestBooleanReduce(base.BaseBooleanReduceTests):
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pass
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class TestPrinting(base.BasePrintingTests):
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pass
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class TestUnaryOps(base.BaseUnaryOpsTests):
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pass
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class TestParsing(base.BaseParsingTests):
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pass
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class Test2DCompat(base.Dim2CompatTests):
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pass
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