Add initial postprocess unit test thingy.

recipe_engine/step_runner.py

 # Copyright 2016 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 import StringIO
 import collections
 import contextlib
 import datetime
 import json
 import os
@@ skipping 453 matching lines @@
             self._test_data.expected_exception))
 
   def _rendered_step_to_dict(self, rs):
     d = rs.config.render_to_dict()
     if rs.followup_annotations:
       d['~followup_annotations'] = rs.followup_annotations
     return d
 
   @property
   def steps_ran(self):
-    return [self._rendered_step_to_dict(rs)
-            for rs in self._step_history.itervalues()]
+    return collections.OrderedDict(
+      (name, self._rendered_step_to_dict(rs))
+      for name, rs in self._step_history.iteritems())
 
 
 # Placeholders associated with a rendered step.
 Placeholders = collections.namedtuple('Placeholders',
     ('inputs_cmd', 'outputs_cmd', 'stdout', 'stderr', 'stdin'))
 
 # Result of 'render_step'.
 #
 # Fields:
 #   config (recipe_api.StepConfig): The step configuration.
@@ skipping 184 matching lines @@
   supplied command, and only uses the |env| kwarg for modifying the environment
   of the child process.
   """
   saved_path = os.environ['PATH']
   try:
     if path is not None:
       os.environ['PATH'] = path
     yield
   finally:
     os.environ['PATH'] = saved_path