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#!/usr/bin/env python
#
# Copyright 2016 Confluent Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
# derived from https://github.com/verisign/python-confluent-schemaregistry.git
#
import struct
import unittest
from sys import version_info
if version_info >= (3,):
from unittest.mock import patch
from tests.avro import data_gen
from confluent_kafka.avro.serializer.message_serializer import MessageSerializer
from tests.avro.mock_schema_registry_client import MockSchemaRegistryClient
from confluent_kafka import avro
from pyflakes.test.harness import skipIf
class TestMessageSerializer(unittest.TestCase):
def setUp(self):
# need to set up the serializer
self.client = MockSchemaRegistryClient()
self.ms = MessageSerializer(self.client)
def assertMessageIsSame(self, message, expected, schema_id):
self.assertTrue(message)
self.assertTrue(len(message) > 5)
magic, sid = struct.unpack('>bI', message[0:5])
self.assertEqual(magic, 0)
self.assertEqual(sid, schema_id)
decoded = self.ms.decode_message(message)
self.assertTrue(decoded)
self.assertEqual(decoded, expected)
def test_encode_with_schema_id(self):
adv = avro.loads(data_gen.ADVANCED_SCHEMA)
basic = avro.loads(data_gen.BASIC_SCHEMA)
subject = 'test'
schema_id = self.client.register(subject, basic)
records = data_gen.BASIC_ITEMS
for record in records:
message = self.ms.encode_record_with_schema_id(schema_id, record)
self.assertMessageIsSame(message, record, schema_id)
subject = 'test_adv'
adv_schema_id = self.client.register(subject, adv)
self.assertNotEqual(adv_schema_id, schema_id)
records = data_gen.ADVANCED_ITEMS
for record in records:
message = self.ms.encode_record_with_schema_id(adv_schema_id, record)
self.assertMessageIsSame(message, record, adv_schema_id)
def test_encode_record_with_schema(self):
topic = 'test'
basic = avro.loads(data_gen.BASIC_SCHEMA)
subject = 'test-value'
schema_id = self.client.register(subject, basic)
records = data_gen.BASIC_ITEMS
for record in records:
message = self.ms.encode_record_with_schema(topic, basic, record)
self.assertMessageIsSame(message, record, schema_id)
@skipIf(version_info < (3,),
'unittest.mock.patch not available in Python 2')
def test_encode_record_with_schema_sets_writers_cache_once(self):
topic = 'test'
basic = avro.loads(data_gen.BASIC_SCHEMA)
subject = 'test-value'
self.client.register(subject, basic)
records = data_gen.BASIC_ITEMS
with patch.object(self.ms, "_get_encoder_func") as encoder_func_mock:
for record in records:
self.ms.encode_record_with_schema(topic, basic, record)
encoder_func_mock.assert_called_once_with(basic)
def test_decode_none(self):
"""null/None messages should decode to None"""
self.assertIsNone(self.ms.decode_message(None))
def hash_func(self):
return hash(str(self))
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