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Fix flaky TestMixture.test_component_choice_random #6222

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merged 6 commits into from
Oct 21, 2022
Merged

Fix flaky TestMixture.test_component_choice_random #6222

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550e034
TST: Fix seed for draws
bherwerth Oct 17, 2022
67c2c77
TST: Use binomial test
bherwerth Oct 17, 2022
a435853
TST: Revert to previous assertion
bherwerth Oct 19, 2022
53a1440
TST: Increase draws to 200
bherwerth Oct 19, 2022
b8aa500
Implement suggestion to lower draws to 20
bherwerth Oct 20, 2022
514f765
Correct comment to match the number of draws
bherwerth Oct 20, 2022
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4 changes: 2 additions & 2 deletions pymc/tests/distributions/test_mixture.py
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Expand Up @@ -333,8 +333,8 @@ def test_component_choice_random(self):
weights = [0.5, 0.5]
components = [Normal.dist(-10, 0.01), Normal.dist(10, 0.01)]
mix = Mixture.dist(weights, components)
draws = draw(mix, draws=10)
# Probability of coming from same component 10 times is 0.5**10
draws = draw(mix, draws=20, random_seed=self.get_random_state())
# Probability of coming from same component 20 times is 0.5**20
assert np.unique(draws > 0).size == 2
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@pytest.mark.parametrize(
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