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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 io
import sys
import unittest
import pytest
from hypothesis import given, strategies as st
from hypothesis.errors import FailedHealthCheck, HypothesisWarning
from tests.common.utils import fails_with, skipif_emscripten
class Thing_with_a_subThing(unittest.TestCase):
"""Example test case using subTest for the actual test below."""
@given(st.tuples(st.booleans(), st.booleans()))
def thing(self, lst):
for i, b in enumerate(lst):
with pytest.warns(HypothesisWarning):
# NOTE: For compatibility with Python 3.9's LL(1)
# parser, this is written as a nested with-statement,
# instead of a compound one.
with self.subTest((i, b)):
self.assertTrue(b)
def test_subTest():
suite = unittest.TestSuite()
suite.addTest(Thing_with_a_subThing("thing"))
stream = io.StringIO()
out = unittest.TextTestRunner(stream=stream).run(suite)
assert len(out.failures) <= out.testsRun, out
class test_given_on_setUp_fails_health_check(unittest.TestCase):
@fails_with(FailedHealthCheck)
@given(st.integers())
def setUp(self, i):
pass
def test(self):
"""Provide something to set up for, so the setUp method is called."""
SUBTEST_SUITE = """
import unittest
from hypothesis import given, settings, strategies as st
class MyTest(unittest.TestCase):
@given(s=st.text())
@settings(deadline=None)
def test_subtest(self, s):
with self.subTest(text=s):
self.assertIsInstance(s, str)
if __name__ == "__main__":
unittest.main()
"""
@skipif_emscripten
@pytest.mark.parametrize("err", [[], ["-Werror"]])
def test_subTest_no_self(testdir, err):
# https://github.com/HypothesisWorks/hypothesis/issues/2462
# for some reason this issue happens only when running unittest from commandline
fname = testdir.makepyfile(tests=SUBTEST_SUITE)
result = testdir.run(sys.executable, *err, str(fname))
expected = pytest.ExitCode.TESTS_FAILED if err else pytest.ExitCode.OK
assert result.ret == expected, result.stderr.str()
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