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[Issue #2] Add unit tests for ConsistentHashRing #30

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HugoNijhuis merged 1 commits from issue-2-hashring-tests into main 2026-01-09 15:53:57 +00:00
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HugoNijhuisandClaude Opus 4.5 3cd4d75e50 Add comprehensive unit tests for ConsistentHashRing
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Test all public methods with 100% coverage:
- AddNode: updates ring, is idempotent, handles multiple nodes
- RemoveNode: updates ring, handles non-existent nodes
- GetNode: returns consistent results, handles empty ring and single node
- GetNodes and IsEmpty helper methods

Distribution tests verify:
- Balanced key distribution across nodes (< 25% deviation)
- Minimal key movement when adding nodes (< 35% moved)
- Virtual nodes improve distribution (CV < 15%)
- Ring behavior with 100+ nodes

Includes benchmarks for GetNode, AddNode, and distribution operations.

Closes #2

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-01-09 16:52:34 +01:00