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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 os
import pytest
import hypothesis
from hypothesis import errors
from hypothesis.internal import escalation as esc
from hypothesis.internal.compat import BaseExceptionGroup
def test_is_hypothesis_file_not_confused_by_prefix(monkeypatch):
# Errors in third-party extensions such as `hypothesis-trio` or
# `hypothesis-jsonschema` used to be incorrectly considered to be
# Hypothesis internal errors, which could result in confusing error
# messages. This test makes sure that files like:
# `[...]/python3.12/site-packages/hypothesis_something/[...]`
# are not considered as hypothesis files.
root = os.path.dirname(hypothesis.__file__)
assert esc.is_hypothesis_file(hypothesis.__file__)
assert esc.is_hypothesis_file(esc.__file__)
assert not esc.is_hypothesis_file(pytest.__file__)
assert not esc.is_hypothesis_file(root + "-suffix")
assert not esc.is_hypothesis_file(root + "-suffix/something.py")
@pytest.mark.parametrize("fname", ["", "<ipython-input-18-f7c304bea5eb>"])
def test_is_hypothesis_file_does_not_error_on_invalid_paths_issue_2319(fname):
assert not esc.is_hypothesis_file(fname)
def test_multiplefailures_deprecation():
with pytest.warns(errors.HypothesisDeprecationWarning):
exc = errors.MultipleFailures
assert exc is BaseExceptionGroup
def test_errors_attribute_error():
with pytest.raises(AttributeError):
errors.ThisIsNotARealAttributeDontCreateSomethingWithThisName
def test_handles_null_traceback():
esc.InterestingOrigin.from_exception(Exception())
def test_handles_context():
e = ValueError()
e.__context__ = KeyError()
origin = esc.InterestingOrigin.from_exception(e)
assert "ValueError at " in str(origin)
assert " context: " in str(origin)
assert "KeyError at " in str(origin)
def test_handles_groups():
origin = esc.InterestingOrigin.from_exception(
BaseExceptionGroup("message", [ValueError("msg2")])
)
assert "ExceptionGroup at " in str(origin)
assert "child exception" in str(origin)
assert "ValueError at " in str(origin)
def make_exceptions_with_cycles():
err = ValueError()
err.__context__ = err
yield err
err = TypeError()
err.__context__ = BaseExceptionGroup("msg", [err])
yield err
inner = LookupError()
err = BaseExceptionGroup("msg", [inner])
inner.__context__ = err
yield err
inner = OSError()
yield BaseExceptionGroup("msg", [inner, inner, inner])
@pytest.mark.parametrize("err", list(make_exceptions_with_cycles()))
def test_handles_cycles(err):
esc.InterestingOrigin.from_exception(err)
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