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third_party/WebKit/Tools/Scripts/webkitpy/common/system/executive_mock.py

 # Copyright (C) 2011 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #    * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #    * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 35 matching lines @@
 
     def wait(self):
         return
 
     def poll(self):
         # Consider the process completed when all the stdout and stderr has been read.
         if self.stdout.len != self.stdout.tell() or self.stderr.len != self.stderr.tell():
             return None
         return self.returncode
 
-# FIXME: This should be unified with MockExecutive2
+    def communicate(self, *_):
+        return (self.stdout.getvalue(), self.stderr.getvalue())
 
 
+# FIXME: This should be unified with MockExecutive2 (http://crbug.com/626115).
 class MockExecutive(object):
     PIPE = "MOCK PIPE"
     STDOUT = "MOCK STDOUT"
 
     @staticmethod
     def ignore_error(error):
         pass
 
     def __init__(self, should_log=False, should_throw=False,
                  should_throw_when_run=None, should_return_zero_when_run=None):
         self._should_log = should_log
         self._should_throw = should_throw
         self._should_throw_when_run = should_throw_when_run or set()
         self._should_return_zero_when_run = should_return_zero_when_run or set()
         # FIXME: Once executive wraps os.getpid() we can just use a static pid for "this" process.
         self._running_pids = {'test-webkitpy': os.getpid()}
+        self.calls = []
+        self._output = "MOCK output of child process"
         self._proc = None
-        self.calls = []
 
     def check_running_pid(self, pid):
         return pid in self._running_pids.values()
 
     def running_pids(self, process_name_filter):
         running_pids = []
         for process_name, process_pid in self._running_pids.iteritems():
             if process_name_filter(process_name):
                 running_pids.append(process_pid)
 
@@ skipping 22 matching lines @@
 
         assert isinstance(args, list) or isinstance(args, tuple)
         if self._should_log:
             env_string = ""
             if env:
                 env_string = ", env=%s" % env
             input_string = ""
             if input:
                 input_string = ", input=%s" % input
             _log.info("MOCK run_command: %s, cwd=%s%s%s", args, cwd, env_string, input_string)
-        output = "MOCK output of child process"
 
         if self._should_throw_when_run.intersection(args):
             raise ScriptError("Exception for %s" % args, output="MOCK command output")
 
         if self._should_throw:
-            raise ScriptError("MOCK ScriptError", output=output)
+            raise ScriptError("MOCK ScriptError", output=self._output)
 
         if return_exit_code and self._should_return_zero_when_run.intersection(args):
             return 0
 
-        return output
+        return self._output
 
     def cpu_count(self):
         return 2
 
     def kill_all(self, process_name):
         pass
 
     def kill_process(self, pid):
         pass
 
     def popen(self, args, cwd=None, env=None, **kwargs):
         assert all(isinstance(arg, basestring) for arg in args)
         self.calls.append(args)
         if self._should_log:
             cwd_string = ""
             if cwd:
                 cwd_string = ", cwd=%s" % cwd
             env_string = ""
             if env:
                 env_string = ", env=%s" % env
             _log.info("MOCK popen: %s%s%s", args, cwd_string, env_string)
         if not self._proc:
-            self._proc = MockProcess()
+            self._proc = MockProcess(self._output)
         return self._proc
 
     def call(self, args, **kwargs):
         assert all(isinstance(arg, basestring) for arg in args)
         self.calls.append(args)
         _log.info('Mock call: %s', args)
 
     def run_in_parallel(self, commands):
         assert len(commands)
 
@@ skipping 12 matching lines @@
         return map(thunk, arglist)
 
     def process_dump(self):
         return []
 
 
 class MockExecutive2(MockExecutive):
     """MockExecutive2 is like MockExecutive except it doesn't log anything."""
 
     def __init__(self, output='', exit_code=0, exception=None, run_command_fn=None, stderr=''):
+        super(MockExecutive2, self).__init__()
         self._output = output
         self._stderr = stderr
         self._exit_code = exit_code
         self._exception = exception
         self._run_command_fn = run_command_fn
-        self.calls = []
 
     def run_command(self,
                     args,
                     cwd=None,
                     input=None,
                     error_handler=None,
                     return_exit_code=False,
                     return_stderr=True,
                     decode_output=False,
                     env=None,
                     debug_logging=False):
         self.calls.append(args)
         assert isinstance(args, list) or isinstance(args, tuple)
         assert all(isinstance(arg, basestring) for arg in args)
         if self._exception:
             raise self._exception  # pylint: disable=E0702
         if self._run_command_fn:
             return self._run_command_fn(args)
         if return_exit_code:
             return self._exit_code
         if self._exit_code and error_handler:
             script_error = ScriptError(script_args=args, exit_code=self._exit_code, output=self._output)
             error_handler(script_error)
         if return_stderr:
             return self._output + self._stderr
         return self._output