Fix bug whereby booleans in unions could not be serialized in python.

mojo/python/tests/bindings_unions_unittest.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import struct
 import unittest
 
 # Generated files
 # pylint: disable=F0401
 import test_unions_mojom
@@ skipping 83 matching lines @@
     context = serialization.RootDeserializationContext(data, handles)
     decoded = test_unions_mojom.ObjectUnion.Deserialize(context)
 
     self.assertEquals(u, decoded)
 
   def testNonNullableNullObjectInUnionSerialization(self):
     u =  test_unions_mojom.ObjectUnion(f_dummy=None)
     with self.assertRaises(serialization.SerializationException):
       u.Serialize()
 
+  def testBoolInUnionSerialization(self):
+    u = test_unions_mojom.PodUnion(f_bool=True)
+    data, handles = u.Serialize()
+
+    context = serialization.RootDeserializationContext(data, handles)
+    decoded = test_unions_mojom.PodUnion.Deserialize(context)
+
+    self.assertEquals(u, decoded)
+
   def testArrayInUnionSerialization(self):
     u = test_unions_mojom.ObjectUnion(
         f_array_int8=[1, 2, 3, 4, 5])
     (data, handles) = u.Serialize()
     context = serialization.RootDeserializationContext(data, handles)
     decoded = test_unions_mojom.ObjectUnion.Deserialize(context)
 
     self.assertEquals(u, decoded)
 
   def testMapInUnionSerialization(self):
@@ skipping 65 matching lines @@
         'f_uint32': test_unions_mojom.PodUnion(f_uint32=32),
         'f_uint16': test_unions_mojom.PodUnion(f_uint16=16),
         'f_uint64': test_unions_mojom.PodUnion(f_uint64=64),
         }
     (data, handles) = s.Serialize()
 
     context = serialization.RootDeserializationContext(data, handles)
     decoded = test_unions_mojom.SmallStruct.Deserialize(context)
 
     self.assertEquals(s, decoded)