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Streaming & messaging

Kafka-style pub/sub, event consumers, async pipelines, and message-driven workflows.

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Streaming & messaging medium

How to Mock Offset Commit Auto vs Manual in Python

Demonstrates a Kafka-style offset commit function with auto/manual modes and tests it using unittest.mock.patch.

unittest mocking kafka
Python 
from unittest.mock import Mock, patch

def commit_offsets(topic_partition_offsets, auto_commit=False):
    """Manually commit offsets or simulate auto-commit."""
    if auto_commit:
        print(f"Auto-committing offsets: {topic_partition_offsets}")
        return {"status": "auto_committed"}
    
    print(f"Manuall…
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