import pytest
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from pandas.util._decorators import deprecate_kwarg
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import pandas._testing as tm
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@deprecate_kwarg("old", "new")
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def _f1(new=False):
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return new
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_f2_mappings = {"yes": True, "no": False}
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@deprecate_kwarg("old", "new", _f2_mappings)
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def _f2(new=False):
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return new
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def _f3_mapping(x):
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return x + 1
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@deprecate_kwarg("old", "new", _f3_mapping)
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def _f3(new=0):
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return new
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@pytest.mark.parametrize("key,klass", [("old", FutureWarning), ("new", None)])
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def test_deprecate_kwarg(key, klass):
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x = 78
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with tm.assert_produces_warning(klass):
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assert _f1(**{key: x}) == x
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@pytest.mark.parametrize("key", list(_f2_mappings.keys()))
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def test_dict_deprecate_kwarg(key):
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with tm.assert_produces_warning(FutureWarning):
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assert _f2(old=key) == _f2_mappings[key]
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@pytest.mark.parametrize("key", ["bogus", 12345, -1.23])
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def test_missing_deprecate_kwarg(key):
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with tm.assert_produces_warning(FutureWarning):
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assert _f2(old=key) == key
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@pytest.mark.parametrize("x", [1, -1.4, 0])
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def test_callable_deprecate_kwarg(x):
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with tm.assert_produces_warning(FutureWarning):
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assert _f3(old=x) == _f3_mapping(x)
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def test_callable_deprecate_kwarg_fail():
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msg = "((can only|cannot) concatenate)|(must be str)|(Can't convert)"
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with pytest.raises(TypeError, match=msg):
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_f3(old="hello")
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def test_bad_deprecate_kwarg():
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msg = "mapping from old to new argument values must be dict or callable!"
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with pytest.raises(TypeError, match=msg):
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@deprecate_kwarg("old", "new", 0)
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def f4(new=None):
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return new
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@deprecate_kwarg("old", None)
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def _f4(old=True, unchanged=True):
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return old, unchanged
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@pytest.mark.parametrize("key", ["old", "unchanged"])
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def test_deprecate_keyword(key):
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x = 9
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if key == "old":
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klass = FutureWarning
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expected = (x, True)
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else:
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klass = None
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expected = (True, x)
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with tm.assert_produces_warning(klass):
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assert _f4(**{key: x}) == expected
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