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"""Tests for google.protobuf.descriptor_database."""

__author__ = 'matthewtoia@google.com (Matt Toia)'

try:
  import unittest2 as unittest  #PY26
except ImportError:
  import unittest

from google.protobuf import unittest_pb2
from google.protobuf import descriptor_pb2
from google.protobuf.internal import factory_test2_pb2
from google.protobuf import descriptor_database


class DescriptorDatabaseTest(unittest.TestCase):

  def testAdd(self):
    db = descriptor_database.DescriptorDatabase()
    file_desc_proto = descriptor_pb2.FileDescriptorProto.FromString(
        factory_test2_pb2.DESCRIPTOR.serialized_pb)
    db.Add(file_desc_proto)

    self.assertEqual(file_desc_proto, db.FindFileByName(
        'google/protobuf/internal/factory_test2.proto'))
    # Can find message type.
    self.assertEqual(file_desc_proto, db.FindFileContainingSymbol(
        'google.protobuf.python.internal.Factory2Message'))
    # Can find nested message type.
    self.assertEqual(file_desc_proto, db.FindFileContainingSymbol(
        'google.protobuf.python.internal.Factory2Message.NestedFactory2Message'))
    # Can find enum type.
    self.assertEqual(file_desc_proto, db.FindFileContainingSymbol(
        'google.protobuf.python.internal.Factory2Enum'))
    # Can find nested enum type.
    self.assertEqual(file_desc_proto, db.FindFileContainingSymbol(
        'google.protobuf.python.internal.Factory2Message.NestedFactory2Enum'))
    self.assertEqual(file_desc_proto, db.FindFileContainingSymbol(
        'google.protobuf.python.internal.MessageWithNestedEnumOnly.NestedEnum'))
    # Can find field.
    self.assertEqual(file_desc_proto, db.FindFileContainingSymbol(
        'google.protobuf.python.internal.Factory2Message.list_field'))
    # Can find enum value.
    self.assertEqual(file_desc_proto, db.FindFileContainingSymbol(
        'google.protobuf.python.internal.Factory2Enum.FACTORY_2_VALUE_0'))
    # Can find top level extension.
    self.assertEqual(file_desc_proto, db.FindFileContainingSymbol(
        'google.protobuf.python.internal.another_field'))
    # Can find nested extension inside a message.
    self.assertEqual(file_desc_proto, db.FindFileContainingSymbol(
        'google.protobuf.python.internal.Factory2Message.one_more_field'))

    # Can find service.
    file_desc_proto2 = descriptor_pb2.FileDescriptorProto.FromString(
        unittest_pb2.DESCRIPTOR.serialized_pb)
    db.Add(file_desc_proto2)
    self.assertEqual(file_desc_proto2, db.FindFileContainingSymbol(
        'protobuf_unittest.TestService'))

    # Non-existent field under a valid top level symbol can also be
    # found. The behavior is the same with protobuf C++.
    self.assertEqual(file_desc_proto2, db.FindFileContainingSymbol(
        'protobuf_unittest.TestAllTypes.none_field'))

    self.assertRaises(KeyError,
                      db.FindFileContainingSymbol,
                      'protobuf_unittest.NoneMessage')


if __name__ == '__main__':
  unittest.main()