Add support for operational arguments protobuf.

unittests/recipes_py_test.py

Index: unittests/recipes_py_test.py
diff --git a/unittests/recipes_py_test.py b/unittests/recipes_py_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..eff5c4a06aec619bd4f4d4c1e217e8181fc41eb3
--- /dev/null
+++ b/unittests/recipes_py_test.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+# 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 base64
+import json
+import unittest
+
+import repo_test_util
+
+import recipes
+from recipe_engine import arguments_pb2
+from google.protobuf import json_format as jsonpb
+
+
+class TestOperationalArgs(unittest.TestCase):
+
+  def test_operational_arg_parsing(self):
+    # For convenience, we'll define the JSONPB data as a Python dict that we
+    # will then dump into JSON.
+    op_args = jsonpb.Parse(json.dumps({
+      'properties': {'property': {
+        'a': {'s': 'Hello'},
+        'b': {'int': -12345},
+        'c': {'uint': 12345},
+        'd': {'d': 3.14159},
+        'e': {'b': True},
+        'f': {'data': base64.b64encode('\x60\x0d\xd0\x65')},
+        'g': {'map': {
+          'property': {
+            'foo': {'s': 'FOO!'},
+            'bar': {'map': {
+              'property': {
+                'baz': {'s': 'BAZ!'},
+              },
+            }},
+          }},
+        },
+        'h': {'list': {
+          'property': [
+            {'s': 'foo'},
+            {'s': 'bar'},
+            {'s': 'baz'},
+          ],
+        }},
+      }},
+      'annotationFlags': {
+        'emitTimestamp': True,
+      },
+    }), arguments_pb2.Arguments())
+
+    self.assertEqual(
+        recipes._op_properties_to_dict(op_args.properties.property),
+        {
+          u'a': u'Hello',
+          u'b': -12345L,
+          u'c': 12345L,
+          u'd': 3.14159,
+          u'e': True,
+          u'f': '\x60\x0d\xd0\x65',
+          u'g': {
+            u'foo': u'FOO!',
+            u'bar': {
+              u'baz': u'BAZ!',
+            },
+          },
+          u'h': [
+            u'foo',
+            u'bar',
+            u'baz',
+          ],
+        })
+
+
+if __name__ == '__main__':
+  result = unittest.main()