Fang Deng | 69498c3 | 2017-03-02 14:29:30 -0800 | [diff] [blame] | 1 | #!/usr/bin/env python |
| 2 | # |
| 3 | # Copyright 2016 - 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 | """Tests for acloud.internal.lib.utils.""" |
| 18 | |
| 19 | import getpass |
| 20 | import os |
| 21 | import subprocess |
Fang Deng | f24be08 | 2018-02-10 10:09:55 -0800 | [diff] [blame] | 22 | import time |
Fang Deng | 69498c3 | 2017-03-02 14:29:30 -0800 | [diff] [blame] | 23 | |
| 24 | import mock |
| 25 | |
| 26 | import unittest |
| 27 | from acloud.internal.lib import driver_test_lib |
| 28 | from acloud.internal.lib import utils |
| 29 | |
| 30 | |
| 31 | class UtilsTest(driver_test_lib.BaseDriverTest): |
| 32 | |
| 33 | def testCreateSshKeyPair_KeyAlreadyExists(self): |
| 34 | """Test when the key pair already exists.""" |
| 35 | public_key = "/fake/public_key" |
| 36 | private_key = "/fake/private_key" |
| 37 | self.Patch(os.path, "exists", side_effect=lambda path: path == public_key) |
| 38 | self.Patch(subprocess, "check_call") |
| 39 | utils.CreateSshKeyPairIfNotExist(private_key, public_key) |
| 40 | self.assertEqual(subprocess.check_call.call_count, 0) |
| 41 | |
| 42 | def testCreateSshKeyPair_KeyAreCreated(self): |
| 43 | """Test when the key pair created.""" |
| 44 | public_key = "/fake/public_key" |
| 45 | private_key = "/fake/private_key" |
| 46 | self.Patch(os.path, "exists", return_value=False) |
| 47 | self.Patch(subprocess, "check_call") |
| 48 | self.Patch(os, "rename") |
| 49 | utils.CreateSshKeyPairIfNotExist(private_key, public_key) |
| 50 | self.assertEqual(subprocess.check_call.call_count, 1) |
| 51 | subprocess.check_call.assert_called_with( |
| 52 | utils.SSH_KEYGEN_CMD + ["-C", getpass.getuser(), "-f", private_key], |
| 53 | stdout=mock.ANY, stderr=mock.ANY) |
| 54 | |
Fang Deng | f24be08 | 2018-02-10 10:09:55 -0800 | [diff] [blame] | 55 | def testRetryOnException(self): |
| 56 | def _IsValueError(exc): |
| 57 | return isinstance(exc, ValueError) |
| 58 | num_retry = 5 |
| 59 | |
| 60 | @utils.RetryOnException(_IsValueError, num_retry) |
| 61 | def _RaiseAndRetry(sentinel): |
| 62 | sentinel.alert() |
| 63 | raise ValueError("Fake error.") |
| 64 | |
| 65 | sentinel = mock.MagicMock() |
| 66 | self.assertRaises(ValueError, _RaiseAndRetry, sentinel) |
| 67 | self.assertEqual(1 + num_retry, sentinel.alert.call_count) |
| 68 | |
| 69 | def testRetryExceptionType(self): |
| 70 | """Test RetryExceptionType function.""" |
| 71 | def _RaiseAndRetry(sentinel): |
| 72 | sentinel.alert() |
| 73 | raise ValueError("Fake error.") |
| 74 | |
| 75 | num_retry = 5 |
| 76 | sentinel = mock.MagicMock() |
| 77 | self.assertRaises(ValueError, utils.RetryExceptionType, |
| 78 | (KeyError, ValueError), num_retry, _RaiseAndRetry, |
| 79 | sentinel=sentinel) |
| 80 | self.assertEqual(1 + num_retry, sentinel.alert.call_count) |
| 81 | |
| 82 | def testRetry(self): |
| 83 | """Test Retry.""" |
| 84 | self.Patch(time, "sleep") |
| 85 | def _RaiseAndRetry(sentinel): |
| 86 | sentinel.alert() |
| 87 | raise ValueError("Fake error.") |
| 88 | |
| 89 | num_retry = 5 |
| 90 | sentinel = mock.MagicMock() |
| 91 | self.assertRaises(ValueError, utils.RetryExceptionType, |
| 92 | (ValueError, KeyError), num_retry, _RaiseAndRetry, |
| 93 | sleep_multiplier=1, |
| 94 | retry_backoff_factor=2, |
| 95 | sentinel=sentinel) |
| 96 | |
| 97 | self.assertEqual(1 + num_retry, sentinel.alert.call_count) |
| 98 | time.sleep.assert_has_calls( |
| 99 | [mock.call(1), mock.call(2), mock.call(4), mock.call(8), mock.call(16)]) |
| 100 | |
Fang Deng | 69498c3 | 2017-03-02 14:29:30 -0800 | [diff] [blame] | 101 | |
| 102 | if __name__ == "__main__": |
| 103 | unittest.main() |