48 lines
1.5 KiB
Python
48 lines
1.5 KiB
Python
# Copyright 2016 Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, 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
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# under the License.
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import mock
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import unittest
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from fuelmenu.common import replace
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def custom_mock_open(lines):
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"""Customizing mock open
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:param lines: list of lines
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:return: mock object
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"""
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m_open = mock.mock_open()
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m_open.return_value.readlines.return_value = [
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'{}\n'.format(line) for line in lines
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]
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return m_open
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class TestReplace(unittest.TestCase):
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def setUp(self):
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super(TestReplace, self).setUp()
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self.data = ['line1', 'line2', 'line3']
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def test_replace(self):
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filename = 'filename'
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with mock.patch('__builtin__.open', custom_mock_open(self.data)) \
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as m_open:
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replace.replaceInFile(filename, 'line2', 'line4')
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self.assertEqual(m_open.call_args_list,
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[mock.call(filename), mock.call(filename, 'w')])
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m_open.return_value.write.assert_called_once_with(
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'line1\nline4\nline3\n')
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