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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 unittest
import pytest
from _pytest.outcomes import Skipped
from hypothesis import given, settings
from hypothesis.core import skip_exceptions_to_reraise
from hypothesis.database import InMemoryExampleDatabase
from hypothesis.strategies import integers
from tests.common.utils import capture_out
@pytest.mark.parametrize("skip_exception", skip_exceptions_to_reraise())
def test_no_falsifying_example_if_unittest_skip(skip_exception):
"""If a ``SkipTest`` exception is raised during a test, Hypothesis should
not continue running the test and shrink process, nor should it print
anything about falsifying examples."""
class DemoTest(unittest.TestCase):
@given(xs=integers())
def test_to_be_skipped(self, xs):
if xs == 0:
raise skip_exception
else:
assert xs == 0
with capture_out() as o:
suite = unittest.defaultTestLoader.loadTestsFromTestCase(DemoTest)
unittest.TextTestRunner().run(suite)
assert "Falsifying example" not in o.getvalue()
def test_skip_exceptions_save_database_entries():
"""Skip exceptions should save database entries for immediate replay (issue #4484)."""
database = InMemoryExampleDatabase()
call_count = 0
skip_value = None
first_value = None
@settings(database=database, max_examples=100)
@given(integers())
def test_func(n):
nonlocal call_count, skip_value, first_value
call_count += 1
if first_value is None:
first_value = n
# Skip on the 5th value in the first run (the choice of 5 is arbitrary)
if call_count == 5 and skip_value is None:
skip_value = n
if n == skip_value:
pytest.skip()
# First run should raise a skip exception and save to database
with pytest.raises(Skipped):
test_func()
assert sum(len(v) for v in database.data.values()) == 1
# Second run should immediately replay the skip value
first_value = None
call_count = 0
with pytest.raises(Skipped):
test_func()
# first call should be the replayed skip value
assert first_value == skip_value
assert call_count == 1
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