Set UNbufferIO env for Earlgrey tests outputs.

scripts/slave/ios/test_runner.py

 #!/usr/bin/python
 # Copyright 2014 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.
 
 """Contains test runners for launching tests on simulators and devices."""
 
 # pylint: disable=relative-import
 import environment_setup
 
@@ skipping 840 matching lines @@
 
   def HandleJsonFileWithPath(self, summary):
     """Parse data in summarydir and send to perf dashboard."""
     with open(summary) as jsonFile:
       return json.load(jsonFile)
 
   def GetLaunchEnvironment(self):
     """Returns the environment which is used to run the xctest.
     """
     env = dict(os.environ, APP_TARGET_NAME=self.test_host_name,
-               TEST_TARGET_NAME=self.test_target_name)
+               TEST_TARGET_NAME=self.test_target_name,
+               NSUnbufferedIO='YES')
     return env
 
   def GetLaunchCommand(self, test_filter=None, blacklist=False):
     """Returns the command which is used to launch the test.
 
     Args:
       test_filter: A list of tests to filter by, or None to mean all.
       blacklist: Whether to blacklist the elements of test_filter or not. Only
       works when test_filter is not None.
 
@@ skipping 387 matching lines @@
     Args:
       test_filter: A list of tests to filter by, or None to mean all.
       blacklist: Whether to blacklist the elements of test_filter or not. Only
       works when test_filter is not None.
 
     Returns:
       A list whose elements are the args representing the command.
     """
     built_dir = os.path.split(self.app_path)[0]
 
-    cmd = ['xcodebuild', 'test',
-          'BUILT_PRODUCTS_DIR=%s' % built_dir,
-          '-project', self.test_project_dir,
-          '-scheme','TestProject',
-          '-destination','platform=iOS Simulator,name=%s,OS=%s'
-          % (self.platform, self.version),
-          '-archivePath', self.homedir,
-          'APP_TARGET_NAME=%s' % self.test_host_name,
-          'TEST_TARGET_NAME=%s' % self.test_target_name]
+    cmd = [
+      'xcodebuild', 'test',
+      'BUILT_PRODUCTS_DIR=%s' % built_dir,
+      '-project', self.test_project_dir,
+      '-scheme','TestProject',
+      '-destination','platform=iOS Simulator,name=%s,OS=%s'
+      % (self.platform, self.version),
+      '-archivePath', self.homedir,
+      'APP_TARGET_NAME=%s' % self.test_host_name,
+      'TEST_TARGET_NAME=%s' % self.test_target_name,
+      'NSUnbufferedIO=YES'
+    ]
     return cmd
 
   @TestRunner.RequireTearDown
   def Launch(self, *args, **kwargs):
     """Launches the test."""
     self.SetUp()
 
     result = self._Run(
       self.GetLaunchCommand(), self.GetLaunchEnvironment(), *args, **kwargs)
 
@@ skipping 130 matching lines @@
     Args:
       test_filter: A list of tests to filter by, or None to mean all.
       blacklist: Whether to blacklist the elements of test_filter or not. Only
       works when test_filter is not None.
 
     Returns:
       A list whose elements are the args representing the command.
     """
     built_dir = os.path.split(self.app_path)[0]
 
-    cmd = ['xcodebuild', 'test-without-building',
-          'BUILT_PRODUCTS_DIR=%s' % built_dir,
-          'CONFIGURATION_BUILD_DIR=%s' % built_dir,
-          '-project', self.test_project_dir,
-          '-configuration', 'iphoneos',
-          '-scheme', 'TestProject',
-          '-destination','id=%s' % self.device_id,
-          'APP_TARGET_NAME=%s' % self.test_host_name,
-          'TEST_TARGET_NAME=%s' % self.test_target_name]
+    cmd = [
+      'xcodebuild', 'test-without-building',
+      'BUILT_PRODUCTS_DIR=%s' % built_dir,
+      'CONFIGURATION_BUILD_DIR=%s' % built_dir,
+      '-project', self.test_project_dir,
+      '-configuration', 'iphoneos',
+      '-scheme', 'TestProject',
+      '-destination','id=%s' % self.device_id,
+      'APP_TARGET_NAME=%s' % self.test_host_name,
+      'TEST_TARGET_NAME=%s' % self.test_target_name,
+      'NSUnbufferedIO=YES'
+    ]
     return cmd
 
   @TestRunner.RequireTearDown
   def Launch(self, *args, **kwargs):
     """Launches the test."""
     self.InstallApp()
 
     result = self._Run(
       self.GetLaunchCommand(), self.GetLaunchEnvironment(), *args, **kwargs)
 
     if result.crashed and not result.crashed_test:
       # If the app crashed, but there is no specific test which crashed,
       # then the app must have failed to even start. Try one more time.
       self.Print(
         '%s appears to have crashed on startup. Retrying...' % self.app_name,
         blank_lines=2,
         time_to_sleep=5,
       )
 
       # Uninstall and re-install the app.
       self.UninstallApp()
       self.InstallApp()
 
       result = self._Run(
         self.GetLaunchCommand(), self.GetLaunchEnvironment(), *args, **kwargs)
 
     return self.RunAllTests(result, *args, **kwargs)