test_error.py

#!/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 pickle

from confluent_kafka import KafkaError
from confluent_kafka.error import ConsumeError, ProduceError


def test_new_consume_error_constant():
    ce = ConsumeError(KafkaError(KafkaError._PARTITION_EOF))

    assert ce.code == KafkaError._PARTITION_EOF
    assert ce.name == u'_PARTITION_EOF'


def test_new_consume_error_caused_by():
    ce = ConsumeError(KafkaError(KafkaError.INVALID_CONFIG), exception=ValueError())

    assert ce.code == KafkaError.INVALID_CONFIG
    assert ce.name == u'INVALID_CONFIG'
    assert isinstance(ce.exception, ValueError)


def test_new_consume_error_custom_message():
    ce = ConsumeError(KafkaError(KafkaError._KEY_SERIALIZATION, "Unable to serialize key"))

    assert ce.code == KafkaError._KEY_SERIALIZATION
    assert ce.name == u'_KEY_SERIALIZATION'
    assert ce.args[0].str() == "Unable to serialize key"


def test_new_produce_error_constant():
    pe = ProduceError(KafkaError(KafkaError._PARTITION_EOF))

    assert pe.code == KafkaError._PARTITION_EOF
    assert pe.name == u'_PARTITION_EOF'


def test_new_produce_error_caused_by():
    pe = ProduceError(KafkaError(KafkaError.INVALID_CONFIG), exception=ValueError())

    assert pe.code == KafkaError.INVALID_CONFIG
    assert pe.name == u'INVALID_CONFIG'
    assert isinstance(pe.exception, ValueError)


def test_new_produce_error_custom_message():
    pe = ProduceError(KafkaError(KafkaError._KEY_SERIALIZATION, "Unable to serialize key"))

    assert pe.code == KafkaError._KEY_SERIALIZATION
    assert pe.name == u'_KEY_SERIALIZATION'
    assert pe.args[0].str() == "Unable to serialize key"


def test_kafka_error_non_ascii_str():
    # Covers the valid-UTF-8 non-ASCII path only: that the "replace" decode
    # doesn't mangle legitimate non-English text. The public constructor can't
    # inject invalid bytes, so the actual #448 invalid-byte case (reachable only
    # from C or a genuinely non-UTF-8 locale) is not exercised here.
    msg = u"Ошибка: недопустимое значение"
    err = KafkaError(KafkaError._KEY_SERIALIZATION, msg)

    assert err.str() == msg
    assert msg in str(err)
    assert repr(err)


def test_kafka_error_pickle():
    # KafkaError_reduce() is what backs pickle and copy.deepcopy, and it
    # decodes the reason string the same way KafkaError_str() does. Guards
    # against a regression reintroducing #448 on the __reduce__ path, e.g. a
    # KafkaError crossing a multiprocessing process boundary.
    msg = u"Ошибка: недопустимое значение"
    err = KafkaError(KafkaError._KEY_SERIALIZATION, msg, fatal=True, retriable=True, txn_requires_abort=False)

    restored = pickle.loads(pickle.dumps(err))

    assert restored.code() == err.code()
    assert restored.str() == err.str()
    assert restored.name() == err.name()
    assert restored.fatal() == err.fatal()
    assert restored.retriable() == err.retriable()
    assert restored.txn_requires_abort() == err.txn_requires_abort()