| Fang Deng | 71c4b1f | 2013-05-20 09:55:04 -0700 | [diff] [blame^] | 1 | #!/usr/bin/python |
| 2 | # Copyright (c) 2013 The Chromium OS Authors. All rights reserved. |
| 3 | # Use of this source code is governed by a BSD-style license that can be |
| 4 | # found in the LICENSE file. |
| 5 | |
| 6 | import __builtin__ |
| 7 | import mox |
| 8 | import os |
| 9 | import unittest |
| 10 | from StringIO import StringIO |
| 11 | |
| 12 | import utils |
| 13 | |
| 14 | |
| 15 | class TestUtils(mox.MoxTestBase): |
| 16 | """Test utility functions.""" |
| 17 | |
| 18 | |
| 19 | def test_load_servo_interface_mapping(self): |
| 20 | """Test servo-interface mapping file can be loaded.""" |
| 21 | self.mox.StubOutWithMock(__builtin__, 'open') |
| 22 | fake_content = ( |
| 23 | 'chromeos1-rack5-host10-servo, chromeos1-poe-switch1, fa42\n' |
| 24 | 'chromeos1-rack5-host11-servo, chromeos1-poe-switch1, fa43\n' |
| 25 | ', chromeos2-poe-switch8, fa43\n' |
| 26 | 'chromeos2-rack5-host11-servo, chromeos2-poe-switch8, fa44\n') |
| 27 | fake_file = self.mox.CreateMockAnything() |
| 28 | fake_file.__enter__().AndReturn(StringIO(fake_content)) |
| 29 | fake_file.__exit__(mox.IgnoreArg(), mox.IgnoreArg(), mox.IgnoreArg()) |
| 30 | open('fake_file.csv').AndReturn(fake_file) |
| 31 | expect = {'chromeos1-rack5-host10-servo': |
| 32 | ('chromeos1-poe-switch1', 'fa42'), |
| 33 | 'chromeos1-rack5-host11-servo': |
| 34 | ('chromeos1-poe-switch1', 'fa43'), |
| 35 | 'chromeos2-rack5-host11-servo': |
| 36 | ('chromeos2-poe-switch8', 'fa44')} |
| 37 | self.mox.ReplayAll() |
| 38 | self.assertEqual( |
| 39 | utils.load_servo_interface_mapping('fake_file.csv'), expect) |
| 40 | self.mox.VerifyAll() |
| 41 | |
| 42 | |
| 43 | def _reload_helper(self, do_reload): |
| 44 | """Helper class for mapping file reloading tests.""" |
| 45 | self.mox.StubOutWithMock(utils, 'load_servo_interface_mapping') |
| 46 | self.mox.StubOutWithMock(os.path, 'getmtime') |
| 47 | check_point = 1369783561.8525634 |
| 48 | if do_reload: |
| 49 | last_modified = check_point + 10.0 |
| 50 | servo_interface = {'fake_servo': ('fake_switch', 'fake_if')} |
| 51 | utils.load_servo_interface_mapping('fake_file').AndReturn( |
| 52 | servo_interface) |
| 53 | else: |
| 54 | last_modified = check_point |
| 55 | os.path.getmtime(mox.IgnoreArg()).AndReturn(last_modified) |
| 56 | self.mox.ReplayAll() |
| 57 | result = utils.reload_servo_interface_mapping_if_necessary( |
| 58 | check_point, mapping_file='fake_file') |
| 59 | if do_reload: |
| 60 | self.assertEqual(result, (last_modified, servo_interface)) |
| 61 | else: |
| 62 | self.assertIsNone(result) |
| 63 | self.mox.VerifyAll() |
| 64 | |
| 65 | |
| 66 | def test_reload_servo_interface_mapping_necessary(self): |
| 67 | """Test that mapping file is reloaded when it is modified.""" |
| 68 | self._reload_helper(True) |
| 69 | |
| 70 | |
| 71 | def test_reload_servo_interface_mapping_not_necessary(self): |
| 72 | """Test that mapping file is not reloaded when it is not modified.""" |
| 73 | self._reload_helper(False) |
| 74 | |
| 75 | |
| 76 | if __name__ == '__main__': |
| 77 | unittest.main() |