judokon-test-author

Skill Instructions

This skill makes verification mandatory.

Inputs / Outputs / Non-goals

• Inputs: changed logic, affected features, relevant test locations.
• Outputs: updated tests, coverage notes, targeted test commands.
• Non-goals: full suite runs without need or DOM-mutation tests.

What this skill helps accomplish

• Protect game logic from regressions
• Validate state transitions and rules
• Ensure feature flags behave correctly

When to use this skill

• Adding or modifying battle logic
• Changing state machines
• Introducing new features or flags
• Fixing bugs

Testing principles

1. No logic change without tests
2. Test behaviour, not implementation
3. State transitions must be explicit
4. Feature flags require on/off coverage

Test execution

• Prefer targeted runs: npx vitest run tests/<path>.test.js
• Use npm run test:battles:classic or npm run test:battles:cli when relevant.

DOM discipline

• Do not mutate DOM directly in tests; use component APIs or user-level events.

Required test types

• State transition tests
• Rule evaluation tests
• Feature flag toggle tests
• Smoke tests for entry wiring

Expected output

• New or updated test files
• Clear test descriptions
• Coverage-aware suggestions when gaps exist