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How to use test_dataframe_single_element_coerce method in pandera

Best Python code snippet using pandera_python

test_schemas.py

Source:test_schemas.py

...82    # checks if 'a' is converted to float, while schema says int, will a schema83    # error be thrown84    with pytest.raises(errors.SchemaError):85        schema.validate(df.assign(a=[1.7, 2.3, 3.1]))86def test_dataframe_single_element_coerce() -> None:87    """Test that coercing a single element dataframe works correctly."""88    schema = DataFrameSchema({"x": Column(int, coerce=True)})89    assert isinstance(schema(pd.DataFrame({"x": [1]})), pd.DataFrame)90    with pytest.raises(errors.SchemaError, match="Error while coercing 'x'"):91        schema(pd.DataFrame({"x": [None]}))92def test_dataframe_empty_coerce() -> None:93    """Test that coercing an empty element dataframe works correctly."""94    schema = DataFrameSchema({"x": Column(int, coerce=True)})95    assert isinstance(schema(pd.DataFrame({"x": []})), pd.DataFrame)96def test_dataframe_schema_equality() -> None:97    """Test DataframeSchema equality."""98    schema = DataFrameSchema({"a": Column(int)})99    assert schema == copy.copy(schema)100    assert schema != "schema"...

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