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# Copyright 2023 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Unit tests for code_coverage_utils_test.py.
Example usage:
vpython3 code_coverage_utils_test.py
"""
# pylint: disable=protected-access
import os
from pathlib import Path
import sys
import tempfile
import unittest
path_root = Path(__file__).parents[2]
sys.path.append(str(path_root))
from pylib.utils import code_coverage_utils
from py_utils import tempfile_ext
import mock # pylint: disable=import-error
class MockDevicePathExists:
def __init__(self, value):
self._path_exists = value
def PathExists(self, directory, retries): # pylint: disable=unused-argument
return self._path_exists
class CodeCoverageUtilsTest(unittest.TestCase):
@mock.patch('subprocess.check_output')
def testMergeCoverageFiles(self, mock_sub):
with tempfile_ext.NamedTemporaryDirectory() as cov_tempd:
pro_tempd = os.path.join(cov_tempd, 'profraw')
os.mkdir(pro_tempd)
profdata = tempfile.NamedTemporaryFile(
dir=pro_tempd,
delete=False,
suffix=code_coverage_utils._PROFRAW_FILE_EXTENSION)
code_coverage_utils.MergeClangCoverageFiles(cov_tempd, pro_tempd)
# Merged file should be deleted.
self.assertFalse(os.path.exists(profdata.name))
self.assertTrue(mock_sub.called)
@mock.patch('os.path.isfile', return_value=True)
@mock.patch('shutil.rmtree')
@mock.patch('pylib.utils.code_coverage_utils.PullClangCoverageFiles')
@mock.patch('pylib.utils.code_coverage_utils.MergeClangCoverageFiles')
def testPullAndMaybeMergeClangCoverageFiles(self, mock_merge_function,
mock_pull_function, mock_rmtree,
_):
mock_device = MockDevicePathExists(True)
code_coverage_utils.PullAndMaybeMergeClangCoverageFiles(
mock_device, 'device_coverage_dir', 'output_dir',
'output_subfolder_name')
mock_pull_function.assert_called_with(mock_device, 'device_coverage_dir',
'output_dir/output_subfolder_name')
mock_merge_function.assert_called_with(
'output_dir', 'output_dir/output_subfolder_name/device_coverage_dir')
self.assertTrue(mock_rmtree.called)
@mock.patch('os.path.isfile', return_value=True)
@mock.patch('shutil.rmtree')
@mock.patch('pylib.utils.code_coverage_utils.PullClangCoverageFiles')
@mock.patch('pylib.utils.code_coverage_utils.MergeClangCoverageFiles')
def testPullAndMaybeMergeClangCoverageFilesNoPull(self, mock_merge_function,
mock_pull_function,
mock_rmtree, _):
mock_device = MockDevicePathExists(False)
code_coverage_utils.PullAndMaybeMergeClangCoverageFiles(
mock_device, 'device_coverage_dir', 'output_dir',
'output_subfolder_name')
self.assertFalse(mock_pull_function.called)
self.assertFalse(mock_merge_function.called)
self.assertFalse(mock_rmtree.called)
@mock.patch('os.path.isfile', return_value=False)
@mock.patch('shutil.rmtree')
@mock.patch('pylib.utils.code_coverage_utils.PullClangCoverageFiles')
@mock.patch('pylib.utils.code_coverage_utils.MergeClangCoverageFiles')
def testPullAndMaybeMergeClangCoverageFilesNoMerge(self, mock_merge_function,
mock_pull_function,
mock_rmtree, _):
mock_device = MockDevicePathExists(True)
code_coverage_utils.PullAndMaybeMergeClangCoverageFiles(
mock_device, 'device_coverage_dir', 'output_dir',
'output_subfolder_name')
mock_pull_function.assert_called_with(mock_device, 'device_coverage_dir',
'output_dir/output_subfolder_name')
self.assertFalse(mock_merge_function.called)
self.assertFalse(mock_rmtree.called)
if __name__ == '__main__':
unittest.main(verbosity=2)
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