90 lines
2.5 KiB
Python
90 lines
2.5 KiB
Python
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"""Test kddcup99 loader, if the data is available,
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or if specifically requested via environment variable
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(e.g. for CI jobs).
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Only 'percent10' mode is tested, as the full data
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is too big to use in unit-testing.
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"""
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from functools import partial
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import pytest
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from sklearn.datasets.tests.test_common import (
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check_as_frame,
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check_pandas_dependency_message,
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check_return_X_y,
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)
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@pytest.mark.parametrize("as_frame", [True, False])
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@pytest.mark.parametrize(
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"subset, n_samples, n_features",
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[
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(None, 494021, 41),
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("SA", 100655, 41),
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("SF", 73237, 4),
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("http", 58725, 3),
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("smtp", 9571, 3),
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],
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)
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def test_fetch_kddcup99_percent10(
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fetch_kddcup99_fxt, as_frame, subset, n_samples, n_features
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):
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data = fetch_kddcup99_fxt(subset=subset, as_frame=as_frame)
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assert data.data.shape == (n_samples, n_features)
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assert data.target.shape == (n_samples,)
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if as_frame:
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assert data.frame.shape == (n_samples, n_features + 1)
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assert data.DESCR.startswith(".. _kddcup99_dataset:")
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def test_fetch_kddcup99_return_X_y(fetch_kddcup99_fxt):
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fetch_func = partial(fetch_kddcup99_fxt, subset="smtp")
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data = fetch_func()
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check_return_X_y(data, fetch_func)
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def test_fetch_kddcup99_as_frame(fetch_kddcup99_fxt):
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bunch = fetch_kddcup99_fxt()
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check_as_frame(bunch, fetch_kddcup99_fxt)
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def test_fetch_kddcup99_shuffle(fetch_kddcup99_fxt):
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dataset = fetch_kddcup99_fxt(
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random_state=0,
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subset="SA",
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percent10=True,
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)
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dataset_shuffled = fetch_kddcup99_fxt(
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random_state=0,
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subset="SA",
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shuffle=True,
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percent10=True,
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)
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assert set(dataset["target"]) == set(dataset_shuffled["target"])
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assert dataset_shuffled.data.shape == dataset.data.shape
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assert dataset_shuffled.target.shape == dataset.target.shape
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def test_pandas_dependency_message(fetch_kddcup99_fxt, hide_available_pandas):
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check_pandas_dependency_message(fetch_kddcup99_fxt)
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def test_corrupted_file_error_message(fetch_kddcup99_fxt, tmp_path):
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"""Check that a nice error message is raised when cache is corrupted."""
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kddcup99_dir = tmp_path / "kddcup99_10-py3"
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kddcup99_dir.mkdir()
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samples_path = kddcup99_dir / "samples"
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with samples_path.open("wb") as f:
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f.write(b"THIS IS CORRUPTED")
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msg = (
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"The cache for fetch_kddcup99 is invalid, please "
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f"delete {str(kddcup99_dir)} and run the fetch_kddcup99 again"
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)
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with pytest.raises(OSError, match=msg):
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fetch_kddcup99_fxt(data_home=str(tmp_path))
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