38 lines
1.3 KiB
Python
38 lines
1.3 KiB
Python
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"""Test the california_housing loader, if the data is available,
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or if specifically requested via environment variable
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(e.g. for travis cron job)."""
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import pytest
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from sklearn.datasets.tests.test_common import check_return_X_y
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from functools import partial
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def test_fetch(fetch_california_housing_fxt):
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data = fetch_california_housing_fxt()
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assert((20640, 8) == data.data.shape)
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assert((20640, ) == data.target.shape)
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# test return_X_y option
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fetch_func = partial(fetch_california_housing_fxt)
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check_return_X_y(data, fetch_func)
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def test_fetch_asframe(fetch_california_housing_fxt):
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pd = pytest.importorskip('pandas')
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bunch = fetch_california_housing_fxt(as_frame=True)
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frame = bunch.frame
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assert hasattr(bunch, 'frame') is True
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assert frame.shape == (20640, 9)
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assert isinstance(bunch.data, pd.DataFrame)
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assert isinstance(bunch.target, pd.Series)
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def test_pandas_dependency_message(fetch_california_housing_fxt,
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hide_available_pandas):
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# Check that pandas is imported lazily and that an informative error
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# message is raised when pandas is missing:
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expected_msg = ('fetch_california_housing with as_frame=True'
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' requires pandas')
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with pytest.raises(ImportError, match=expected_msg):
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fetch_california_housing_fxt(as_frame=True)
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