# 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 sys
from contextlib import contextmanager

import pytest

from hypothesis import given, strategies as st
from hypothesis.errors import HypothesisWarning
from hypothesis.internal.scrutineer import MONITORING_TOOL_ID


@contextmanager
def using_tool_id(tool_id, tool_name):
    try:
        sys.monitoring.use_tool_id(tool_id, tool_name)
        yield
    finally:
        sys.monitoring.free_tool_id(tool_id)


@pytest.mark.skipif(sys.version_info[:2] < (3, 12), reason="new namespace")
def test_monitoring_warns_on_registered_tool_id(warns_or_raises):

    # scrutineer can't run if something has already registered its tool id.
    with using_tool_id(MONITORING_TOOL_ID, "rogue"):
        # 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 warns_or_raises(HypothesisWarning, match=r"already taken by tool rogue"):

            @given(st.integers())
            def f(n):
                raise AssertionError

            with pytest.raises(AssertionError):
                f()