1#!/usr/bin/env python
2#
3# Copyright 2017 - The Android Open Source Project
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#     http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17"""Unit test for gsi_util.utils.file_utils."""
18
19import os
20import tempfile
21import unittest
22
23from gsi_util.utils import file_utils
24
25
26class UnopenedTemporaryFileTest(unittest.TestCase):
27  """Unit test for UnopenedTemporaryFile."""
28
29  def test_normal(self):
30    with file_utils.UnopenedTemporaryFile(
31        prefix='prefix', suffix='suffix') as f:
32      self.assertTrue(os.path.exists(f))
33      self.assertEqual(0, os.path.getsize(f))
34      self.assertRegexpMatches(os.path.basename(f), r'prefix.+suffix')
35      self.assertEqual(tempfile.gettempdir(), os.path.dirname(f))
36    self.assertFalse(os.path.exists(f))
37
38  def test_remove_before_exit(self):
39    with file_utils.UnopenedTemporaryFile() as f:
40      self.assertTrue(os.path.exists(f))
41      os.unlink(f)
42      self.assertFalse(os.path.exists(f))
43    self.assertFalse(os.path.exists(f))
44
45  def test_rename_before_exit(self):
46    with file_utils.UnopenedTemporaryFile() as f:
47      self.assertTrue(os.path.exists(f))
48      new_name = f + '.new'
49      os.rename(f, new_name)
50      self.assertFalse(os.path.exists(f))
51    self.assertFalse(os.path.exists(f))
52    self.assertTrue(os.path.exists(new_name))
53    os.unlink(new_name)
54
55
56if __name__ == '__main__':
57  unittest.main()
58