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TST Make test_fastica_eigh_low_rank_warning more stable #23770

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Jun 28, 2022
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TST Make test_fastica_eigh_low_rank_warning more stable #23770

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6 changes: 2 additions & 4 deletions sklearn/decomposition/tests/test_fastica.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,6 @@

import numpy as np
from scipy import stats
from sklearn.datasets import make_low_rank_matrix

from sklearn.utils._testing import assert_array_equal
from sklearn.utils._testing import assert_allclose
Expand Down Expand Up @@ -501,9 +500,8 @@ def test_fastica_simple_different_solvers(add_noise, global_random_seed):
def test_fastica_eigh_low_rank_warning(global_random_seed):
"""Test FastICA eigh solver raises warning for low-rank data."""
rng = np.random.RandomState(global_random_seed)
X = make_low_rank_matrix(
n_samples=10, n_features=10, random_state=rng, effective_rank=2
)
A = rng.randn(10, 2)
X = A @ A.T
ica = FastICA(random_state=0, whiten="unit-variance", whiten_solver="eigh")
msg = "There are some small singular values"
with pytest.warns(UserWarning, match=msg):
Expand Down