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Zookeeper, Kafka server, and Kafka consumer fixtures for Pytest

Project description

Pytest fixture factories for Zookeeper, Kafka server and Kafka consumer.

from pytest_kafka import make_zookeeper_process, make_kafka_server, make_kafka_consumer

ROOT = Path(__file__).parent
KAFKA_SCRIPTS = ROOT / 'kafka/bin/'

zookeeper_proc = make_zookeeper_process(ZOOKEEPER_BIN)
kafka_server = make_kafka_server(KAFKA_BIN, 'zookeeper_proc')
kafka_consumer = make_kafka_consumer(
    'kafka_server', seek_to_beginning=True, kafka_topics=['topic'])

This creates 3 fixtures:

  1. zookeeper_proc - Zookeeper process
  2. kafka_server - Kafka process
  3. kafka_consumer - usable kafka.KafkaConsumer instance

ZOOKEEPER_BIN and KAFKA_BIN are paths to launch scripts in your Kafka distribution. Check this project’s to see a way of installing Kafka for development.

It is advised to pass seek_to_beginning=True because otherwise some messages may not be captured by the consumer. This requires knowing the topics upfront because without topics there’s no partitions to seek.

It’s possible to create multiple Kafka fixtures forming a cluster by passing the same Zookeeper fixture to them. For an example, check the tests.

Session-scoped fixtures are also available. Consult the test suite.

System requirements


Execute ./ develop in a virtualenv. This will take care of:

  • installing dependencies
  • updating pip
  • installing dev dependencies
  • installing Kafka to the project dir (for development only)


The library has been open-sourced from a codebase belonging to Infectious Media.

Project details

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