Trellis improve-ut

Analyzes changed files and improves unit test coverage using project-specific testing conventions from .trellis/spec/ unit-test specs. Determines test scope (unit vs integration vs regression), adds or updates tests following existing patterns, and runs validation. Use when code changes need test coverage, after implementing a feature, after fixing a bug, or when test gaps are identified.

install

source · Clone the upstream repo

git clone https://github.com/mindfold-ai/Trellis

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/mindfold-ai/Trellis "$T" && mkdir -p ~/.claude/skills && cp -r "$T/packages/cli/src/templates/codex/skills/improve-ut" ~/.claude/skills/mindfold-ai-trellis-improve-ut-b63988 && rm -rf "$T"

manifest: packages/cli/src/templates/codex/skills/improve-ut/SKILL.md

source content

Improve Unit Tests (UT)

Use this skill to improve test coverage after code changes.

Usage

$improve-ut

Source of Truth

Discover and read unit-test specs dynamically:

# Discover available packages and their spec layers
python3 ./.trellis/scripts/get_context.py --mode packages

Look for packages with

unit-test

spec layer in the output. For each discovered

unit-test/

directory, read all relevant spec files inside it (for example

index.md

conventions.md

integration-patterns.md

mock-strategies.md

If this skill conflicts with the unit-test specs, the specs win.

Execution Flow

Inspect changed files:
- ```
git diff --name-only
```
Decide test scope using unit-test specs:
- unit vs integration vs regression
- mock vs real filesystem flow
Add/update tests using existing project test patterns
Run validation:

pnpm lint
pnpm typecheck
pnpm test

Summarize decisions, updates, and remaining test gaps.

Output Format

## UT Coverage Plan
- Changed areas: ...
- Test scope (unit/integration/regression): ...

## Test Updates
- Added: ...
- Updated: ...

## Validation
- pnpm lint: pass/fail
- pnpm typecheck: pass/fail
- pnpm test: pass/fail

## Gaps / Follow-ups
- <none or explicit rationale>