import pytest
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from pandas.util._validators import validate_args_and_kwargs
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_fname = "func"
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def test_invalid_total_length_max_length_one():
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compat_args = ("foo",)
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kwargs = {"foo": "FOO"}
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args = ("FoO", "BaZ")
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min_fname_arg_count = 0
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max_length = len(compat_args) + min_fname_arg_count
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actual_length = len(kwargs) + len(args) + min_fname_arg_count
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msg = (
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rf"{_fname}\(\) takes at most {max_length} "
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rf"argument \({actual_length} given\)"
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)
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with pytest.raises(TypeError, match=msg):
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validate_args_and_kwargs(_fname, args, kwargs, min_fname_arg_count, compat_args)
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def test_invalid_total_length_max_length_multiple():
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compat_args = ("foo", "bar", "baz")
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kwargs = {"foo": "FOO", "bar": "BAR"}
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args = ("FoO", "BaZ")
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min_fname_arg_count = 2
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max_length = len(compat_args) + min_fname_arg_count
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actual_length = len(kwargs) + len(args) + min_fname_arg_count
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msg = (
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rf"{_fname}\(\) takes at most {max_length} "
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rf"arguments \({actual_length} given\)"
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)
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with pytest.raises(TypeError, match=msg):
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validate_args_and_kwargs(_fname, args, kwargs, min_fname_arg_count, compat_args)
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@pytest.mark.parametrize("args,kwargs", [((), {"foo": -5, "bar": 2}), ((-5, 2), {})])
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def test_missing_args_or_kwargs(args, kwargs):
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bad_arg = "bar"
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min_fname_arg_count = 2
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compat_args = {"foo": -5, bad_arg: 1}
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msg = (
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rf"the '{bad_arg}' parameter is not supported "
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rf"in the pandas implementation of {_fname}\(\)"
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)
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with pytest.raises(ValueError, match=msg):
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validate_args_and_kwargs(_fname, args, kwargs, min_fname_arg_count, compat_args)
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def test_duplicate_argument():
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min_fname_arg_count = 2
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compat_args = {"foo": None, "bar": None, "baz": None}
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kwargs = {"foo": None, "bar": None}
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args = (None,) # duplicate value for "foo"
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msg = rf"{_fname}\(\) got multiple values for keyword argument 'foo'"
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with pytest.raises(TypeError, match=msg):
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validate_args_and_kwargs(_fname, args, kwargs, min_fname_arg_count, compat_args)
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def test_validation():
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# No exceptions should be raised.
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compat_args = {"foo": 1, "bar": None, "baz": -2}
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kwargs = {"baz": -2}
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args = (1, None)
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min_fname_arg_count = 2
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validate_args_and_kwargs(_fname, args, kwargs, min_fname_arg_count, compat_args)
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