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# coding=utf-8
#
# This file is part of Hypothesis, which may be found at
# https://github.com/HypothesisWorks/hypothesis-python
#
# Most of this work is copyright (C) 2013-2015 David R. MacIver
# (david@drmaciver.com), but it contains contributions by others. See
# CONTRIBUTING.rst for a full list of people who may hold copyright, and
# consult the git log if you need to determine who owns an individual
# contribution.
#
# 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 http://mozilla.org/MPL/2.0/.
#
# END HEADER
from __future__ import division, print_function, absolute_import
import time
import pytest
import hypothesis.strategies as s
from hypothesis import find, given, reject, settings
from hypothesis.errors import NoSuchExample, Unsatisfiable
def test_stops_after_max_examples_if_satisfying():
tracker = []
def track(x):
tracker.append(x)
return False
max_examples = 100
with pytest.raises(NoSuchExample):
find(
s.integers(0, 10000),
track, settings=settings(max_examples=max_examples))
assert len(tracker) == max_examples
def test_stops_after_max_iterations_if_not_satisfying():
tracker = set()
def track(x):
tracker.add(x)
reject()
max_examples = 100
max_iterations = 200
with pytest.raises(Unsatisfiable):
find(
s.integers(0, 10000),
track, settings=settings(
max_examples=max_examples, max_iterations=max_iterations))
# May be less because of duplication
assert len(tracker) <= max_iterations
def test_can_time_out_in_simplify():
def slow_always_true(x):
time.sleep(0.1)
return True
start = time.time()
find(
s.lists(s.booleans()), slow_always_true,
settings=settings(timeout=0.1, database=None)
)
finish = time.time()
run_time = finish - start
assert run_time <= 0.3
some_normal_settings = settings()
def test_is_not_normally_default():
assert settings.default is not some_normal_settings
@given(s.booleans())
@some_normal_settings
def test_settings_are_default_in_given(x):
assert settings.default is some_normal_settings
def test_settings_are_default_in_find():
find(
s.booleans(), lambda x: settings.default is some_normal_settings,
settings=some_normal_settings)
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