import numpy as np
import pandas as pd

import pytest

from dask.dataframe.hashing import hash_pandas_object
from dask.dataframe.utils import assert_eq


@pytest.mark.parametrize('obj', [
    pd.Series([1, 2, 3]),
    pd.Series([1.0, 1.5, 3.2]),
    pd.Series([1.0, 1.5, 3.2], index=[1.5, 1.1, 3.3]),
    pd.Series(['a', 'b', 'c']),
    pd.Series([True, False, True]),
    pd.Index([1, 2, 3]),
    pd.Index([True, False, True]),
    pd.DataFrame({'x': ['a', 'b', 'c'], 'y': [1, 2, 3]}),
    pd.util.testing.makeMissingDataframe(),
    pd.util.testing.makeMixedDataFrame(),
    pd.util.testing.makeTimeDataFrame(),
    pd.util.testing.makeTimeSeries(),
    pd.util.testing.makeTimedeltaIndex()])
def test_hash_pandas_object(obj):
    
a = hash_pandas_object(obj)
    b = hash_pandas_object(obj)
    if isinstance(a, np.ndarray):
        np.testing.assert_equal(a, b)
    else:
        assert_eq(a, b)