mojo: Start generating structs for python bindings

mojo/python/tests/bindings_enums_unittest.py

 # Copyright 2014 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 unittest
 
 # Generated files
 # pylint: disable=F0401
 import sample_import_mojom
+import sample_service_mojom
 
 
 class EnumBindingsTest(unittest.TestCase):
 
   # Testing that enum class have expected constant values.
   def testTopLevelEnumGeneration(self):
     self.assertEquals(sample_import_mojom.Shape.RECTANGLE, 1)
     self.assertEquals(sample_import_mojom.Shape.CIRCLE, 2)
     self.assertEquals(sample_import_mojom.Shape.TRIANGLE, 3)
     self.assertEquals(sample_import_mojom.Shape.LAST,
                       sample_import_mojom.Shape.TRIANGLE)
 
     self.assertEquals(sample_import_mojom.AnotherShape.RECTANGLE, 10)
     self.assertEquals(sample_import_mojom.AnotherShape.CIRCLE, 11)
     self.assertEquals(sample_import_mojom.AnotherShape.TRIANGLE, 12)
 
     self.assertEquals(sample_import_mojom.YetAnotherShape.RECTANGLE, 20)
     self.assertEquals(sample_import_mojom.YetAnotherShape.CIRCLE, 21)
     self.assertEquals(sample_import_mojom.YetAnotherShape.TRIANGLE, 22)
 
+  # Testing that internal enum class have expected constant values.
+  def testInternalEnumGeneration(self):
+    self.assertEquals(sample_service_mojom.Bar.Type.VERTICAL, 1)
+    self.assertEquals(sample_service_mojom.Bar.Type.HORIZONTAL, 2)
+    self.assertEquals(sample_service_mojom.Bar.Type.BOTH, 3)
+    self.assertEquals(sample_service_mojom.Bar.Type.INVALID, 4)
+
   # Testing an enum class cannot be instantiated.
   def testNonInstantiableEnum(self):
     with self.assertRaises(TypeError):
       sample_import_mojom.Shape()
 
   # Testing an enum does not contain the VALUES constant.
   def testNoVALUESConstant(self):
     with self.assertRaises(AttributeError):
       # pylint: disable=W0104
       sample_import_mojom.Shape.VALUES
 
   # Testing enum values are frozen.
   def testEnumFrozen(self):
     with self.assertRaises(AttributeError):
       sample_import_mojom.Shape.RECTANGLE = 2
     with self.assertRaises(AttributeError):
       del sample_import_mojom.Shape.RECTANGLE
     with self.assertRaises(AttributeError):
       sample_import_mojom.Shape.NewShape = 4