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comparison: media/webrtc/trunk/build/android/pylib/python_test_caller.py
media/webrtc/trunk/build/android/pylib/python_test_caller.py
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:e67608a901e0 |
|---|---|
| 1 # Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 # Use of this source code is governed by a BSD-style license that can be | |
| 3 # found in the LICENSE file. | |
| 4 | |
| 5 """Helper module for calling python-based tests.""" | |
| 6 | |
| 7 | |
| 8 import logging | |
| 9 import sys | |
| 10 import time | |
| 11 | |
| 12 from test_result import TestResults | |
| 13 | |
| 14 | |
| 15 def CallPythonTest(test, options): | |
| 16 """Invokes a test function and translates Python exceptions into test results. | |
| 17 | |
| 18 This method invokes SetUp()/TearDown() on the test. It is intended to be | |
| 19 resilient to exceptions in SetUp(), the test itself, and TearDown(). Any | |
| 20 Python exception means the test is marked as failed, and the test result will | |
| 21 contain information about the exception. | |
| 22 | |
| 23 If SetUp() raises an exception, the test is not run. | |
| 24 | |
| 25 If TearDown() raises an exception, the test is treated as a failure. However, | |
| 26 if the test itself raised an exception beforehand, that stack trace will take | |
| 27 precedence whether or not TearDown() also raised an exception. | |
| 28 | |
| 29 shard_index is not applicable in single-device scenarios, when test execution | |
| 30 is serial rather than parallel. Tests can use this to bring up servers with | |
| 31 unique port numbers, for example. See also python_test_sharder. | |
| 32 | |
| 33 Args: | |
| 34 test: an object which is ostensibly a subclass of PythonTestBase. | |
| 35 options: Options to use for setting up tests. | |
| 36 | |
| 37 Returns: | |
| 38 A TestResults object which contains any results produced by the test or, in | |
| 39 the case of a Python exception, the Python exception info. | |
| 40 """ | |
| 41 | |
| 42 start_date_ms = int(time.time()) * 1000 | |
| 43 failed = False | |
| 44 | |
| 45 try: | |
| 46 test.SetUp(options) | |
| 47 except Exception: | |
| 48 failed = True | |
| 49 logging.exception( | |
| 50 'Caught exception while trying to run SetUp() for test: ' + | |
| 51 test.qualified_name) | |
| 52 # Tests whose SetUp() method has failed are likely to fail, or at least | |
| 53 # yield invalid results. | |
| 54 exc_info = sys.exc_info() | |
| 55 return TestResults.FromPythonException(test.qualified_name, start_date_ms, | |
| 56 exc_info) | |
| 57 | |
| 58 try: | |
| 59 result = test.Run() | |
| 60 except Exception: | |
| 61 # Setting this lets TearDown() avoid stomping on our stack trace from Run() | |
| 62 # should TearDown() also raise an exception. | |
| 63 failed = True | |
| 64 logging.exception('Caught exception while trying to run test: ' + | |
| 65 test.qualified_name) | |
| 66 exc_info = sys.exc_info() | |
| 67 result = TestResults.FromPythonException(test.qualified_name, start_date_ms, | |
| 68 exc_info) | |
| 69 | |
| 70 try: | |
| 71 test.TearDown() | |
| 72 except Exception: | |
| 73 logging.exception( | |
| 74 'Caught exception while trying run TearDown() for test: ' + | |
| 75 test.qualified_name) | |
| 76 if not failed: | |
| 77 # Don't stomp the error during the test if TearDown blows up. This is a | |
| 78 # trade-off: if the test fails, this will mask any problem with TearDown | |
| 79 # until the test is fixed. | |
| 80 exc_info = sys.exc_info() | |
| 81 result = TestResults.FromPythonException(test.qualified_name, | |
| 82 start_date_ms, exc_info) | |
| 83 | |
| 84 return result |
