Show more stack trace in instrumentation tests.

build/android/pylib/instrumentation/instrumentation_test_instance.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import collections
 import copy
 import logging
 import os
 import pickle
 import re
@@ skipping 83 matching lines @@
 
   Returns:
     A list containing an instance of InstrumentationTestResult for each test
     parsed.
   """
 
   results = []
 
   current_result = None
 
+  test_class = None
+  test_method = None
   for status_code, bundle in statuses:
-    test_class = bundle.get('class', '')
-    test_method = bundle.get('test', '')
+    test_class = bundle.get('class', '') or test_class

[jbudorick, 2015/12/11 21:04:30]

nit if this logic sticks around: just do

  test_class = bundle.get('class', test_class)

[Peter Wen, 2015/12/11 22:07:21]

Acknowledged.

+    test_method = bundle.get('test', '') or test_method

[jbudorick, 2015/12/11 21:04:30]

nit: same

[Peter Wen, 2015/12/11 22:07:21]

Acknowledged.

     if test_class and test_method:
       test_name = '%s#%s' % (test_class, test_method)
     else:
       continue
 
     if status_code == instrumentation_parser.STATUS_CODE_START:
       if current_result:
         results.append(current_result)
       current_result = test_result.InstrumentationTestResult(
           test_name, base_test_result.ResultType.UNKNOWN, start_ms, duration_ms)
@@ skipping 512 matching lines @@
   def GenerateTestResults(
       result_code, result_bundle, statuses, start_ms, duration_ms):
     return GenerateTestResults(result_code, result_bundle, statuses,
                                start_ms, duration_ms)
 
   #override
   def TearDown(self):
     if self._isolate_delegate:
       self._isolate_delegate.Clear()