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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 example, given, strategies as st
from hypothesis.errors import InvalidArgument
from tests.common.utils import fails_with
@example(False).via("Manually specified")
@given(st.booleans())
def test_ok_example_via(x):
pass
def test_invalid_example_via():
with pytest.raises(InvalidArgument):
example(x=False).via(100) # not a string!
with pytest.raises(TypeError):
example(x=False).via("abc", "def") # too many args
@pytest.mark.parametrize(
"kw",
[
{"condition": None}, # must be a bool
{"reason": None}, # must be a string
{"raises": None}, # not a BaseException (or even a type)
{"raises": int}, # not a BaseException
{"raises": [Exception]}, # not a tuple
{"raises": (None,)}, # tuple containing a non-BaseException
{"raises": ()}, # empty tuple doesn't make sense here
# raising non-failure exceptions, eg KeyboardInterrupt, is tested below
],
ids=repr,
)
def test_invalid_example_xfail_arguments(kw):
with pytest.raises(InvalidArgument):
example(x=False).xfail(**kw)
@example(True).xfail()
@example(True).xfail(reason="ignored for passing tests")
@example(True).xfail(raises=KeyError)
@example(True).xfail(raises=(KeyError, ValueError))
@example(True).xfail(True, reason="...")
@example(False).xfail(condition=False)
@given(st.none())
def test_many_xfail_example_decorators(fails):
if fails:
raise KeyError
@fails_with(AssertionError)
@example(x=True).xfail(raises=KeyError)
@given(st.none())
def test_xfail_reraises_non_specified_exception(x):
assert not x
@fails_with(
InvalidArgument,
match=r"@example\(x=True\) raised an expected BaseException\('msg'\), "
r"but Hypothesis does not treat this as a test failure",
)
@example(True).xfail()
@given(st.none())
def test_must_raise_a_failure_exception(x):
if x:
raise BaseException("msg")
@fails_with(
AssertionError,
match=r"Expected an exception from @example\(x=None\), but no exception was raised.",
)
@example(None).xfail()
@given(st.none())
def test_error_on_unexpected_pass_base(x):
pass
@fails_with(
AssertionError,
match=r"Expected an AssertionError from @example\(x=None\), but no exception was raised.",
)
@example(None).xfail(raises=AssertionError)
@given(st.none())
def test_error_on_unexpected_pass_single(x):
pass
@fails_with(
AssertionError,
match=r"Expected an AssertionError from @example\(x=None\), but no exception was raised.",
)
@example(None).xfail(raises=(AssertionError,))
@given(st.none())
def test_error_on_unexpected_pass_single_elem_tuple(x):
pass
@fails_with(
AssertionError,
match=r"Expected a KeyError, or ValueError from @example\(x=None\), but no exception was raised.",
)
@example(None).xfail(raises=(KeyError, ValueError))
@given(st.none())
def test_error_on_unexpected_pass_multi(x):
pass
|
