# Copyright The Kubeflow Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import os

import pytest


@pytest.fixture
def mock_env_vars():
    """Fixture to set and clean up environment variables"""
    original_env = dict(os.environ)

    def _set_env_vars(**kwargs):
        for key, value in kwargs.items():
            if value is None:
                os.environ.pop(key, None)
            else:
                os.environ[key] = str(value)
        return os.environ

    yield _set_env_vars

    # Cleanup
    os.environ.clear()
    os.environ.update(original_env)