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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2020 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.
#
import pytest
from confluent_kafka.serialization import (DoubleSerializer,
IntegerSerializer,
StringDeserializer,
DoubleDeserializer,
IntegerDeserializer,
StringSerializer)
@pytest.mark.parametrize("serializer, deserializer, data",
[(DoubleSerializer(), DoubleDeserializer(), 6.21682154508147),
(IntegerSerializer(), IntegerDeserializer(), 4124),
(DoubleSerializer(), DoubleDeserializer(), None),
(IntegerSerializer(), IntegerDeserializer(), None)])
def test_numeric_serialization(kafka_cluster, serializer, deserializer, data):
"""
Tests basic serialization/deserialization of numeric types.
Args:
kafka_cluster (KafkaClusterFixture): cluster fixture
serializer (Serializer): serializer to test
deserializer (Deserializer): deserializer to validate serializer
data(object): input data
"""
topic = kafka_cluster.create_topic("serialization-numeric")
producer = kafka_cluster.producer(value_serializer=serializer)
producer.produce(topic, value=data)
producer.flush()
consumer = kafka_cluster.consumer(value_deserializer=deserializer)
consumer.subscribe([topic])
msg = consumer.poll()
assert msg.value() == data
consumer.close()
@pytest.mark.parametrize("data, codec",
[(u'Jämtland', 'utf_8'),
(u'Härjedalen', 'utf_16'),
(None, 'utf_32')])
def test_string_serialization(kafka_cluster, data, codec):
"""
Tests basic unicode serialization/deserialization functionality
Args:
kafka_cluster (KafkaClusterFixture): cluster fixture
data (unicode): input data
codec (str): encoding type
"""
topic = kafka_cluster.create_topic("serialization-string")
producer = kafka_cluster.producer(value_serializer=StringSerializer(codec))
producer.produce(topic, value=data)
producer.flush()
consumer = kafka_cluster.consumer(value_deserializer=StringDeserializer(codec))
consumer.subscribe([topic])
msg = consumer.poll()
assert msg.value() == data
consumer.close()
@pytest.mark.parametrize("key_serializer, value_serializer, key_deserializer, value_deserializer, key, value", # noqa: E501
[(DoubleSerializer(), StringSerializer('utf_8'),
DoubleDeserializer(), StringDeserializer(),
-31.2168215450814477, u'Jämtland'),
(StringSerializer('utf_16'), DoubleSerializer(),
StringDeserializer('utf_16'), DoubleDeserializer(),
u'Härjedalen', 1.2168215450814477)])
def test_mixed_serialization(kafka_cluster, key_serializer, value_serializer,
key_deserializer, value_deserializer, key, value):
"""
Tests basic mixed serializer/deserializer functionality.
Args:
kafka_cluster (KafkaClusterFixture): cluster fixture
key_serializer (Serializer): serializer to test
key_deserializer (Deserializer): deserializer to validate serializer
key (object): key data
value (object): value data
"""
topic = kafka_cluster.create_topic("serialization-numeric")
producer = kafka_cluster.producer(key_serializer=key_serializer,
value_serializer=value_serializer)
producer.produce(topic, key=key, value=value)
producer.flush()
consumer = kafka_cluster.consumer(key_deserializer=key_deserializer,
value_deserializer=value_deserializer)
consumer.subscribe([topic])
msg = consumer.poll()
assert msg.key() == key
assert msg.value() == value
consumer.close()
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