auto_stub.SimpleMock: add sanity - sort kwargs in expectations.

testing_support/tests/auto_stub_test.py

Index: testing_support/tests/auto_stub_test.py
diff --git a/testing_support/tests/auto_stub_test.py b/testing_support/tests/auto_stub_test.py
index a3d6aef1992b4cef01ae07db6add3e908b8d066b..3322da9524bd4efa17da8008bfb80d265e1885df 100644
--- a/testing_support/tests/auto_stub_test.py
+++ b/testing_support/tests/auto_stub_test.py
@@ -19,6 +19,17 @@ class TestSimpleMock(unittest.TestCase):
     obj.method1(1, param=2)
     obj.check_calls(['method1(1, param=2)'])
 
+  def test_auto_mock_sorted(self):
+    obj = MockedObject(self)
+    obj.method1(1, c=4, a=2, b=3)
+    # tandrii@ is very surprised this is actually deterministic.
+    obj.check_calls(['method1(1, a=2, c=4, b=3)'])
+    # The proper and sane way is to always sort them.
+    obj = MockedObject(self, sorted_kwargs=True)
+    obj.method1(1, c=4, a=2, b=3)
+    obj.check_calls(['method1(1, a=2, b=3, c=4)'])
+
+
 def return_one():
   return 1