# COV-010: Test worker state edge cases

> Create tests for getworkerstate with invalid IDs, setworkerstate with None in tests/unit/teststateworkers.py.

- Skill: `tools-only/cov-010-test-worker-state-edge-cases` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add tools-only/cov-010-test-worker-state-edge-cases`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tools-only/cov-010-test-worker-state-edge-cases/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tools-only (https://skillmd.com/u/tools-only)
- Updated: 2026-09-29
- Page: https://skillmd.com/skills/tools-only/cov-010-test-worker-state-edge-cases

---

# COV-010: Test worker state edge cases

## Overview
Create tests for get_worker_state with invalid IDs, set_worker_state with None in tests/unit/test_state_workers.py.

## Files to Create
- `tests/unit/test_state_workers.py`

## Files to Modify
None

## Files to Read
- `zerg/state.py`

## Requirements

Implement the task as described. Follow TDD approach:
1. Write failing tests first
2. Implement code to make tests pass
3. Refactor if needed

## Verification

```bash
pytest tests/unit/test_state_workers.py -v --tb=short
```

## Acceptance Criteria
- [ ] Test get_worker_state with non-existent worker ID
- [ ] Test set_worker_state with None fields
- [ ] Test worker state update preserves existing fields
- [ ] Test get_all_workers returns empty when no workers
- [ ] Test worker state serialization roundtrip