83 lines
2.6 KiB
Python
83 lines
2.6 KiB
Python
#!/usr/bin/env python3
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# Copyright 2020 The Pigweed Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# https://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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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"""Tests for clang_tidy."""
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import pathlib
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import unittest
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from unittest import mock
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from pw_toolchain import clang_tidy
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class ClangTidyTest(unittest.TestCase):
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"""Unit tests for the clang-tidy wrapper."""
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@mock.patch('subprocess.run', autospec=True)
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def test_source_exclude_filters(self, mock_run):
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# Build the path using joinpath to use OS-appropriate separators on both
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# Windows and Linux.
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source_file = (
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pathlib.Path('..').joinpath('third_party').joinpath('somefile.cc')
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)
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source_root = pathlib.Path('..')
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source_exclude = ['third_party.*']
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extra_args = ['END_OF_INVOKER']
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got = clang_tidy.main(
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False,
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'clang-tidy',
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source_file,
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source_root,
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None,
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source_exclude,
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list(),
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extra_args,
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)
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# Return code is zero.
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self.assertEqual(got, 0)
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# No calls to subprocess: we filtered out the source file.
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self.assertEqual(len(mock_run.mock_calls), 0)
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@mock.patch('subprocess.run', autospec=True)
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def test_source_exclude_does_not_filter(self, mock_run):
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mock_run.return_value.returncode = 0
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source_file = (
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pathlib.Path('..').joinpath('third_party').joinpath('somefile.cc')
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)
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source_root = pathlib.Path('..')
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source_exclude = ['someotherdir.*']
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extra_args = ['END_OF_INVOKER']
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got = clang_tidy.main(
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False,
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'clang-tidy',
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source_file,
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source_root,
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None,
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source_exclude,
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list(),
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extra_args,
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)
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# Return code is zero.
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self.assertEqual(got, 0)
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# One call to subprocess: we did not filter out the source file.
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# There will be more than one mock call because accessing return value
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# attributes also produces mock_calls.
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self.assertGreater(len(mock_run.mock_calls), 0)
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if __name__ == '__main__':
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unittest.main()
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