1 # Copyright 2013 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.
5 """Runs host-driven tests on a particular device."""
12 from pylib.base import base_test_result
13 from pylib.base import base_test_runner
14 from pylib.host_driven import test_case
15 from pylib.instrumentation import test_result
18 class HostDrivenExceptionTestResult(test_result.InstrumentationTestResult):
19 """Test result corresponding to a python exception in a host-driven test."""
21 def __init__(self, test_name, start_date_ms, exc_info):
22 """Constructs a HostDrivenExceptionTestResult object.
25 test_name: name of the test which raised an exception.
26 start_date_ms: the starting time for the test.
27 exc_info: exception info, ostensibly from sys.exc_info().
29 exc_type, exc_value, exc_traceback = exc_info
30 trace_info = ''.join(traceback.format_exception(exc_type, exc_value,
32 log_msg = 'Exception:\n' + trace_info
33 duration_ms = (int(time.time()) * 1000) - start_date_ms
35 super(HostDrivenExceptionTestResult, self).__init__(
37 base_test_result.ResultType.FAIL,
40 log=str(exc_type) + ' ' + log_msg)
43 class HostDrivenTestRunner(base_test_runner.BaseTestRunner):
44 """Orchestrates running a set of host-driven tests.
46 Any Python exceptions in the tests are caught and translated into a failed
47 result, rather than being re-raised on the main thread.
51 def __init__(self, device, shard_index, tool, push_deps,
53 """Creates a new HostDrivenTestRunner.
56 device: Attached android device.
57 shard_index: Shard index.
58 tool: Name of the Valgrind tool.
59 push_deps: If True, push all dependencies to the device.
60 cleanup_test_files: Whether or not to cleanup test files on device.
63 super(HostDrivenTestRunner, self).__init__(device, tool, push_deps,
66 # The shard index affords the ability to create unique port numbers (e.g.
67 # DEFAULT_PORT + shard_index) if the test so wishes.
68 self.shard_index = shard_index
71 def RunTest(self, test):
72 """Sets up and runs a test case.
75 test: An object which is ostensibly a subclass of HostDrivenTestCase.
78 A TestRunResults object which contains the result produced by the test
79 and, in the case of a failure, the test that should be retried.
82 assert isinstance(test, test_case.HostDrivenTestCase)
84 start_date_ms = int(time.time()) * 1000
85 exception_raised = False
88 test.SetUp(str(self.device), self.shard_index,
89 self._push_deps, self._cleanup_test_files)
92 'Caught exception while trying to run SetUp() for test: ' +
94 # Tests whose SetUp() method has failed are likely to fail, or at least
95 # yield invalid results.
96 exc_info = sys.exc_info()
97 results = base_test_result.TestRunResults()
98 results.AddResult(HostDrivenExceptionTestResult(
99 test.tagged_name, start_date_ms, exc_info))
105 # Setting this lets TearDown() avoid stomping on our stack trace from
106 # Run() should TearDown() also raise an exception.
107 exception_raised = True
108 logging.exception('Caught exception while trying to run test: ' +
110 exc_info = sys.exc_info()
111 results = base_test_result.TestRunResults()
112 results.AddResult(HostDrivenExceptionTestResult(
113 test.tagged_name, start_date_ms, exc_info))
119 'Caught exception while trying run TearDown() for test: ' +
121 if not exception_raised:
122 # Don't stomp the error during the test if TearDown blows up. This is a
123 # trade-off: if the test fails, this will mask any problem with TearDown
124 # until the test is fixed.
125 exc_info = sys.exc_info()
126 results = base_test_result.TestRunResults()
127 results.AddResult(HostDrivenExceptionTestResult(
128 test.tagged_name, start_date_ms, exc_info))
130 if not results.DidRunPass():