| name | improve-test-coverage |
| description | This skill should be used when increasing test coverage to a specified threshold percentage. It runs the test suite with SimpleCov, identifies files with the lowest coverage, generates a brief with coverage gaps, and creates a plan with tasks to add the missing tests. |
| allowed-tools | ["Read","Bash","Glob","Grep"] |
Increase Test Coverage
Target threshold: $ARGUMENTS%
If no argument provided, prompt the user for a target.
Step 1: Gather Requirements
- Find coverage config (
.simplecov or spec/spec_helper.rb)
- Run test suite with coverage to get current state:
bundle exec rspec 2>&1 | tail -50
- Check SimpleCov output in
coverage/index.html or console output
- Identify the 20 files with lowest coverage, noting:
- File path
- Current coverage % (lines, branches)
- Which lines/branches are uncovered
Step 2: Compile Brief and Delegate
Compile the gathered information into a structured brief:
Increase test coverage from [current]% to $ARGUMENTS%.
Files needing coverage (ordered by coverage gap):
1. [file] - [current]% coverage (target: $ARGUMENTS%)
- Uncovered: [lines]
- Missing branch coverage: [lines]
2. ...
Configuration: .simplecov, update minimum_coverage to $ARGUMENTS%
Verification: `bundle exec rspec` -> Expected: SimpleCov reports >= $ARGUMENTS% coverage
Invoke /implement with this brief to create the implementation plan.
