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1 # Copyright 2014 The Chromium Authors. All rights reserved. | 1 # Copyright 2014 The Chromium Authors. All rights reserved. |
2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 """ | 5 """ |
6 A test facility to assert call sequences while mocking their behavior. | 6 A test facility to assert call sequences while mocking their behavior. |
7 """ | 7 """ |
8 | 8 |
9 import os | 9 import os |
10 import sys | 10 import sys |
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103 Args: | 103 Args: |
104 call: a mock.call instance identifying a target to patch | 104 call: a mock.call instance identifying a target to patch |
105 Extra keyword arguments are processed by mock.patch | 105 Extra keyword arguments are processed by mock.patch |
106 | 106 |
107 Returns: | 107 Returns: |
108 A context manager to mock/unmock the target of the call | 108 A context manager to mock/unmock the target of the call |
109 """ | 109 """ |
110 if call.name.startswith('self.'): | 110 if call.name.startswith('self.'): |
111 target = self.call_target(call.parent) | 111 target = self.call_target(call.parent) |
112 _, attribute = call.name.rsplit('.', 1) | 112 _, attribute = call.name.rsplit('.', 1) |
113 return mock.patch.object(target, attribute, **kwargs) | 113 if (hasattr(type(target), attribute) |
| 114 and isinstance(getattr(type(target), attribute), property)): |
| 115 return mock.patch.object( |
| 116 type(target), attribute, new_callable=mock.PropertyMock, **kwargs) |
| 117 else: |
| 118 return mock.patch.object(target, attribute, **kwargs) |
114 else: | 119 else: |
115 return mock.patch(call.name, **kwargs) | 120 return mock.patch(call.name, **kwargs) |
116 | 121 |
117 def watchCalls(self, calls): | 122 def watchCalls(self, calls): |
118 """Add calls to the set of watched calls. | 123 """Add calls to the set of watched calls. |
119 | 124 |
120 Args: | 125 Args: |
121 calls: a sequence of mock.call instances identifying targets to watch | 126 calls: a sequence of mock.call instances identifying targets to watch |
122 """ | 127 """ |
123 self._watched.update((call.name, call) for call in calls) | 128 self._watched.update((call.name, call) for call in calls) |
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168 Raises: | 173 Raises: |
169 AssertionError if the watched targets do not receive the exact sequence | 174 AssertionError if the watched targets do not receive the exact sequence |
170 of calls specified. Missing calls, extra calls, and calls with | 175 of calls specified. Missing calls, extra calls, and calls with |
171 mismatching arguments, all cause the assertion to fail. | 176 mismatching arguments, all cause the assertion to fail. |
172 """ | 177 """ |
173 return self._AssertCalls(self, calls, self._watched) | 178 return self._AssertCalls(self, calls, self._watched) |
174 | 179 |
175 def assertCall(self, call, action=None): | 180 def assertCall(self, call, action=None): |
176 return self.assertCalls((call, action)) | 181 return self.assertCalls((call, action)) |
177 | 182 |
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