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# This file is part of Hypothesis, which may be found at
# https://github.com/HypothesisWorks/hypothesis/
#
# Copyright the Hypothesis Authors.
# Individual contributors are listed in AUTHORS.rst and the git log.
#
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at https://mozilla.org/MPL/2.0/.
import pytest
from hypothesis import settings
from hypothesis.errors import Unsatisfiable
from hypothesis.strategies import lists
from tests.common import standard_types
from tests.common.debug import minimal
from tests.common.utils import flaky
@pytest.mark.parametrize("spec", standard_types, ids=list(map(repr, standard_types)))
@flaky(min_passes=1, max_runs=2)
def test_can_collectively_minimize(spec):
"""This should generally exercise strategies' strictly_simpler heuristic by
putting us in a state where example cloning is required to get to the
answer fast enough."""
n = 10
try:
xs = minimal(
lists(spec, min_size=n, max_size=n),
lambda x: len(set(map(repr, x))) >= 2,
settings(max_examples=2000),
)
assert len(xs) == n
assert 2 <= len(set(map(repr, xs))) <= 3
except Unsatisfiable:
pass
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