mirror of https://github.com/google/oss-fuzz.git
40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
# Copyright 2020 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Contains convenient helpers for writing tests."""
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import contextlib
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import os
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import shutil
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import tempfile
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from unittest import mock
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def patch_environ(testcase_obj, env=None):
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"""Patch environment."""
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if env is None:
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env = {}
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patcher = mock.patch.dict(os.environ, env)
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testcase_obj.addCleanup(patcher.stop)
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patcher.start()
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@contextlib.contextmanager
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def temp_dir_copy(directory):
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"""Context manager that yields a temporary copy of |directory|."""
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with tempfile.TemporaryDirectory() as temp_dir:
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temp_copy_path = os.path.join(temp_dir, os.path.basename(directory))
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shutil.copytree(directory, temp_copy_path)
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yield temp_copy_path
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