Current File : //lib/python2.7/site-packages/google/protobuf/internal/message_factory_test.py
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# Protocol Buffers - Google's data interchange format
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"""Tests for google.protobuf.message_factory."""
__author__ = 'matthewtoia@google.com (Matt Toia)'
try:
import unittest2 as unittest #PY26
except ImportError:
import unittest
from google.protobuf import descriptor_pb2
from google.protobuf.internal import api_implementation
from google.protobuf.internal import factory_test1_pb2
from google.protobuf.internal import factory_test2_pb2
from google.protobuf import descriptor_database
from google.protobuf import descriptor_pool
from google.protobuf import message_factory
class MessageFactoryTest(unittest.TestCase):
def setUp(self):
self.factory_test1_fd = descriptor_pb2.FileDescriptorProto.FromString(
factory_test1_pb2.DESCRIPTOR.serialized_pb)
self.factory_test2_fd = descriptor_pb2.FileDescriptorProto.FromString(
factory_test2_pb2.DESCRIPTOR.serialized_pb)
def _ExerciseDynamicClass(self, cls):
msg = cls()
msg.mandatory = 42
msg.nested_factory_2_enum = 0
msg.nested_factory_2_message.value = 'nested message value'
msg.factory_1_message.factory_1_enum = 1
msg.factory_1_message.nested_factory_1_enum = 0
msg.factory_1_message.nested_factory_1_message.value = (
'nested message value')
msg.factory_1_message.scalar_value = 22
msg.factory_1_message.list_value.extend([u'one', u'two', u'three'])
msg.factory_1_message.list_value.append(u'four')
msg.factory_1_enum = 1
msg.nested_factory_1_enum = 0
msg.nested_factory_1_message.value = 'nested message value'
msg.circular_message.mandatory = 1
msg.circular_message.circular_message.mandatory = 2
msg.circular_message.scalar_value = 'one deep'
msg.scalar_value = 'zero deep'
msg.list_value.extend([u'four', u'three', u'two'])
msg.list_value.append(u'one')
msg.grouped.add()
msg.grouped[0].part_1 = 'hello'
msg.grouped[0].part_2 = 'world'
msg.grouped.add(part_1='testing', part_2='123')
msg.loop.loop.mandatory = 2
msg.loop.loop.loop.loop.mandatory = 4
serialized = msg.SerializeToString()
converted = factory_test2_pb2.Factory2Message.FromString(serialized)
reserialized = converted.SerializeToString()
self.assertEqual(serialized, reserialized)
result = cls.FromString(reserialized)
self.assertEqual(msg, result)
def testGetPrototype(self):
db = descriptor_database.DescriptorDatabase()
pool = descriptor_pool.DescriptorPool(db)
db.Add(self.factory_test1_fd)
db.Add(self.factory_test2_fd)
factory = message_factory.MessageFactory()
cls = factory.GetPrototype(pool.FindMessageTypeByName(
'google.protobuf.python.internal.Factory2Message'))
self.assertFalse(cls is factory_test2_pb2.Factory2Message)
self._ExerciseDynamicClass(cls)
cls2 = factory.GetPrototype(pool.FindMessageTypeByName(
'google.protobuf.python.internal.Factory2Message'))
self.assertTrue(cls is cls2)
def testGetMessages(self):
# performed twice because multiple calls with the same input must be allowed
for _ in range(2):
# GetMessage should work regardless of the order the FileDescriptorProto
# are provided. In particular, the function should succeed when the files
# are not in the topological order of dependencies.
# Assuming factory_test2_fd depends on factory_test1_fd.
self.assertIn(self.factory_test1_fd.name,
self.factory_test2_fd.dependency)
# Get messages should work when a file comes before its dependencies:
# factory_test2_fd comes before factory_test1_fd.
messages = message_factory.GetMessages([self.factory_test2_fd,
self.factory_test1_fd])
self.assertTrue(
set(['google.protobuf.python.internal.Factory2Message',
'google.protobuf.python.internal.Factory1Message'],
).issubset(set(messages.keys())))
self._ExerciseDynamicClass(
messages['google.protobuf.python.internal.Factory2Message'])
factory_msg1 = messages['google.protobuf.python.internal.Factory1Message']
self.assertTrue(set(
['google.protobuf.python.internal.Factory2Message.one_more_field',
'google.protobuf.python.internal.another_field'],).issubset(set(
ext.full_name
for ext in factory_msg1.DESCRIPTOR.file.pool.FindAllExtensions(
factory_msg1.DESCRIPTOR))))
msg1 = messages['google.protobuf.python.internal.Factory1Message']()
ext1 = msg1.Extensions._FindExtensionByName(
'google.protobuf.python.internal.Factory2Message.one_more_field')
ext2 = msg1.Extensions._FindExtensionByName(
'google.protobuf.python.internal.another_field')
msg1.Extensions[ext1] = 'test1'
msg1.Extensions[ext2] = 'test2'
self.assertEqual('test1', msg1.Extensions[ext1])
self.assertEqual('test2', msg1.Extensions[ext2])
self.assertEqual(None,
msg1.Extensions._FindExtensionByNumber(12321))
if api_implementation.Type() == 'cpp':
# TODO(jieluo): Fix len to return the correct value.
# self.assertEqual(2, len(msg1.Extensions))
self.assertEqual(len(msg1.Extensions), len(msg1.Extensions))
self.assertRaises(TypeError,
msg1.Extensions._FindExtensionByName, 0)
self.assertRaises(TypeError,
msg1.Extensions._FindExtensionByNumber, '')
else:
self.assertEqual(None,
msg1.Extensions._FindExtensionByName(0))
self.assertEqual(None,
msg1.Extensions._FindExtensionByNumber(''))
def testDuplicateExtensionNumber(self):
pool = descriptor_pool.DescriptorPool()
factory = message_factory.MessageFactory(pool=pool)
# Add Container message.
f = descriptor_pb2.FileDescriptorProto()
f.name = 'google/protobuf/internal/container.proto'
f.package = 'google.protobuf.python.internal'
msg = f.message_type.add()
msg.name = 'Container'
rng = msg.extension_range.add()
rng.start = 1
rng.end = 10
pool.Add(f)
msgs = factory.GetMessages([f.name])
self.assertIn('google.protobuf.python.internal.Container', msgs)
# Extend container.
f = descriptor_pb2.FileDescriptorProto()
f.name = 'google/protobuf/internal/extension.proto'
f.package = 'google.protobuf.python.internal'
f.dependency.append('google/protobuf/internal/container.proto')
msg = f.message_type.add()
msg.name = 'Extension'
ext = msg.extension.add()
ext.name = 'extension_field'
ext.number = 2
ext.label = descriptor_pb2.FieldDescriptorProto.LABEL_OPTIONAL
ext.type_name = 'Extension'
ext.extendee = 'Container'
pool.Add(f)
msgs = factory.GetMessages([f.name])
self.assertIn('google.protobuf.python.internal.Extension', msgs)
# Add Duplicate extending the same field number.
f = descriptor_pb2.FileDescriptorProto()
f.name = 'google/protobuf/internal/duplicate.proto'
f.package = 'google.protobuf.python.internal'
f.dependency.append('google/protobuf/internal/container.proto')
msg = f.message_type.add()
msg.name = 'Duplicate'
ext = msg.extension.add()
ext.name = 'extension_field'
ext.number = 2
ext.label = descriptor_pb2.FieldDescriptorProto.LABEL_OPTIONAL
ext.type_name = 'Duplicate'
ext.extendee = 'Container'
pool.Add(f)
with self.assertRaises(Exception) as cm:
factory.GetMessages([f.name])
self.assertIn(str(cm.exception),
['Extensions '
'"google.protobuf.python.internal.Duplicate.extension_field" and'
' "google.protobuf.python.internal.Extension.extension_field"'
' both try to extend message type'
' "google.protobuf.python.internal.Container"'
' with field number 2.',
'Double registration of Extensions'])
if __name__ == '__main__':
unittest.main()
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