我们从Python开源项目中，提取了以下12个代码示例，用于说明如何使用google.protobuf.message.optional_nested_enum()。
def testAssignUnknownEnum(self): """Assigning an unknown enum value is allowed and preserves the value.""" m = unittest_proto3_arena_pb2.TestAllTypes() m.optional_nested_enum = 1234567 self.assertEqual(1234567, m.optional_nested_enum) m.repeated_nested_enum.append(22334455) self.assertEqual(22334455, m.repeated_nested_enum[0]) # Assignment is a different code path than append for the C++ impl. m.repeated_nested_enum[0] = 7654321 self.assertEqual(7654321, m.repeated_nested_enum[0]) serialized = m.SerializeToString() m2 = unittest_proto3_arena_pb2.TestAllTypes() m2.ParseFromString(serialized) self.assertEqual(1234567, m2.optional_nested_enum) self.assertEqual(7654321, m2.repeated_nested_enum[0]) # Map isn't really a proto3-only feature. But there is no proto2 equivalent # of google/protobuf/map_unittest.proto right now, so it's not easy to # test both with the same test like we do for the other proto2/proto3 tests. # (google/protobuf/map_protobuf_unittest.proto is very different in the set # of messages and fields it contains).
def testAssignInvalidEnum(self): """It should not be possible to assign an invalid enum number to an enum field.""" m = unittest_pb2.TestAllTypes() with self.assertRaises(ValueError) as _: m.optional_nested_enum = 1234567 self.assertRaises(ValueError, m.repeated_nested_enum.append, 1234567)
def testPythonicInit(self): message = unittest_pb2.TestAllTypes( optional_int32=100, optional_fixed32=200, optional_float=300.5, optional_bytes=b'x', optionalgroup={'a': 400}, optional_nested_message={'bb': 500}, optional_nested_enum='BAZ', repeatedgroup=[{'a': 600}, {'a': 700}], repeated_nested_enum=['FOO', unittest_pb2.TestAllTypes.BAR], default_int32=800, oneof_string='y') self.assertIsInstance(message, unittest_pb2.TestAllTypes) self.assertEqual(100, message.optional_int32) self.assertEqual(200, message.optional_fixed32) self.assertEqual(300.5, message.optional_float) self.assertEqual(b'x', message.optional_bytes) self.assertEqual(400, message.optionalgroup.a) self.assertIsInstance(message.optional_nested_message, unittest_pb2.TestAllTypes.NestedMessage) self.assertEqual(500, message.optional_nested_message.bb) self.assertEqual(unittest_pb2.TestAllTypes.BAZ, message.optional_nested_enum) self.assertEqual(2, len(message.repeatedgroup)) self.assertEqual(600, message.repeatedgroup[0].a) self.assertEqual(700, message.repeatedgroup[1].a) self.assertEqual(2, len(message.repeated_nested_enum)) self.assertEqual(unittest_pb2.TestAllTypes.FOO, message.repeated_nested_enum[0]) self.assertEqual(unittest_pb2.TestAllTypes.BAR, message.repeated_nested_enum[1]) self.assertEqual(800, message.default_int32) self.assertEqual('y', message.oneof_string) self.assertFalse(message.HasField('optional_int64')) self.assertEqual(0, len(message.repeated_float)) self.assertEqual(42, message.default_int64) message = unittest_pb2.TestAllTypes(optional_nested_enum=u'BAZ') self.assertEqual(unittest_pb2.TestAllTypes.BAZ, message.optional_nested_enum) with self.assertRaises(ValueError): unittest_pb2.TestAllTypes( optional_nested_message={'INVALID_NESTED_FIELD': 17}) with self.assertRaises(TypeError): unittest_pb2.TestAllTypes( optional_nested_message={'bb': 'INVALID_VALUE_TYPE'}) with self.assertRaises(ValueError): unittest_pb2.TestAllTypes(optional_nested_enum='INVALID_LABEL') with self.assertRaises(ValueError): unittest_pb2.TestAllTypes(repeated_nested_enum='FOO') # Class to test proto3-only features/behavior (updated field presence & enums)
