Integration test modified to take environment variables for processes

test/python_modules/integration/__init__.py

@@ -138,7 +138,7 @@ class Process(object):
     FAILED = 2
     STOPPED = 3
 
-    def __init__(self, executable_name, arguments:typing.Sequence=[], exit_codes:typing.Sequence=(0,)):
+    def __init__(self, executable_name, arguments:typing.Sequence=[], exit_codes:typing.Sequence=(0,), env=None):
         self.__name = "{0}__{1}".format(state.get_unique_number(), executable_name)
         self.__executable = state.get_executable(executable_name)
         self.__arguments = arguments
@@ -154,6 +154,7 @@ class Process(object):
         self.__is_failed = threading.Event()
         self.__ignored = False
         self.__process = None
+        self.__env = env
 
         state.register_process(self)
 
@@ -236,7 +237,7 @@ class Process(object):
                                          bufsize=0,
                                          stdout=stdout,
                                          stderr=stderr,
-                                         env=None) as p:
+                                         env=self.__env) as p:
                         with self.__process_lock:
                             self.__process = p
                         response_queue.put(Process.RUNNING)