"""
Tests for np.foo applied to DataFrame, not necessarily ufuncs.
"""
import numpy as np

from pandas import Categorical, DataFrame
import pandas._testing as tm


class TestAsArray:
    def test_asarray_homogenous(self):
        df = DataFrame({"A": Categorical([1, 2]), "B": Categorical([1, 2])})
        result = np.asarray(df)
        # may change from object in the future
        expected = np.array([[1, 1], [2, 2]], dtype="object")
        tm.assert_numpy_array_equal(result, expected)

    def test_np_sqrt(self, float_frame):
        with np.errstate(all="ignore"):
            result = np.sqrt(float_frame)
        assert isinstance(result, type(float_frame))
        assert result.index is float_frame.index
        assert result.columns is float_frame.columns

        tm.assert_frame_equal(result, float_frame.apply(np.sqrt))
