Fixes dispatch files to return exit codes in several places

BUG=170477

Review URL: https://chromiumcodereview.appspot.com/19021003

git-svn-id: http://src.chromium.org/svn/trunk/src/build@211084 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

android/pylib/browsertests/dispatch.py

@@ -12,6 +12,7 @@ from pylib import android_commands
 from pylib import cmd_helper
 from pylib import constants
 from pylib import ports
+from pylib.base import base_test_result
 from pylib.base import shard
 from pylib.gtest import dispatch as gtest_dispatch
 from pylib.gtest import test_runner
@@ -41,7 +42,7 @@ def Dispatch(options):
 
   if not attached_devices:
     logging.critical('A device must be attached and online.')
-    return 1
+    return (base_test_result.TestRunResults(), constants.ERROR_EXIT_CODE)
 
   # Reset the test port allocation. It's important to do it before starting
   # to dispatch any tests.

android/pylib/gtest/dispatch.py

@@ -212,9 +212,11 @@ def Dispatch(options):
   Returns:
     base_test_result.TestRunResults object with the results of running the tests
   """
+  results = base_test_result.TestRunResults()
+
   if options.test_suite == 'help':
     _ListTestSuites()
-    return 0
+    return (results, 0)
 
   if options.use_xvfb:
     framebuffer = xvfb.Xvfb()
@@ -222,7 +224,6 @@ def Dispatch(options):
 
   all_test_suites = _FullyQualifiedTestSuites(options.exe, options.test_suite,
                                               options.build_type)
-  results = base_test_result.TestRunResults()
   exit_code = 0
   for suite_name, suite_path in all_test_suites:
     # Give each test suite its own copy of options.

android/pylib/instrumentation/dispatch.py

@@ -8,6 +8,7 @@ import logging
 import os
 
 from pylib import android_commands
+from pylib import constants
 from pylib.base import base_test_result
 from pylib.base import shard
 from pylib.utils import report_results
@@ -36,8 +37,8 @@ def Dispatch(options):
   tests = test_pkg._GetAllMatchingTests(
       options.annotations, options.exclude_annotations, options.test_filter)
   if not tests:
-    logging.warning('No instrumentation tests to run with current args.')
-    return base_test_result.TestRunResults()
+    logging.error('No instrumentation tests to run with current args.')
+    return (base_test_result.TestRunResults(), constants.ERROR_EXIT_CODE)
 
   attached_devices = android_commands.GetAttachedDevices()
   if not attached_devices:

android/pylib/uiautomator/dispatch.py

@@ -8,6 +8,7 @@ import logging
 import os
 
 from pylib import android_commands
+from pylib import constants
 from pylib.base import base_test_result
 from pylib.base import shard
 from pylib.utils import report_results
@@ -36,8 +37,8 @@ def Dispatch(options):
   tests = test_pkg._GetAllMatchingTests(
       options.annotations, options.exclude_annotations, options.test_filter)
   if not tests:
-    logging.warning('No uiautomator tests to run with current args.')
-    return base_test_result.TestRunResults()
+    logging.error('No uiautomator tests to run with current args.')
+    return (base_test_result.TestRunResults(), constants.ERROR_EXIT_CODE)
 
   attached_devices = android_commands.GetAttachedDevices()
   if not attached_devices: