AlCheck

A parallel code quality checker for Elixir projects. Runs format, compile, credo, dialyzer, and tests concurrently with smart test partitioning.

Check out how it works in the live showcase

Features

Parallel Execution - all checks run concurrently to maximize CPU utilization
Test Partitioning - splits test suite across multiple partitions
Coverage Merging - combines partition coverage into a single report with caching
Modified Tests - run only tests changed on your branch (granular line-level or whole modules)
Failed Test Rerun - re-run only previously failed tests
Auto-fix - configurable fix commands for format and credo issues
Real-time Progress - animated status lines with test counts and spinner
Configurable - .check.json for all settings, builtin: checks for Elixir-powered logic

Installation

Add al_check to your list of dependencies in mix.exs:

def deps do
  [
    {:al_check, "~> 0.1.0"}
  ]
end

Then install globally:

mix deps.get
mix check.install
# if you use asdf
asdf reshim

Quick Start

check                    # Run default checks
check --init             # Create .check.json with defaults
check --fast             # Run only fast checks (format, compile, credo)
check --only format,test # Run specific checks
check --failed           # Re-run only failed tests
check --fix              # Apply auto-fixes
check --coverage         # Show coverage report
check -v                 # Show version
check --help             # Show all options

Available Checks

Check	Command
`format`	`mix format --check-formatted`
`compile`	`mix compile --warnings-as-errors`
`compile_test`	`MIX_ENV=test mix compile --warnings-as-errors`
`dialyzer`	`mix dialyzer`
`credo`	`mix credo --all`
`credo_strict`	`mix credo --strict --only readability --all`
`test`	`mix test` (with parallel partitioning)
`modified_tests`	Runs only changed test lines vs base branch (builtin)
`modified_test_modules`	Runs whole modified test files vs base branch (builtin)

Guides

Configuration - .check.json reference, custom checks, coverage, fix commands
Test Partitioning - database setup, connection limits, scheduler tuning
Workflows - failed tests, auto-fix, modified tests, coverage, watch mode

Documentation

Full API documentation is available at https://hexdocs.pm/al_check.

Requirements

Elixir ~> 1.18
Mix build tool

License

This project is licensed under the MIT License - see the LICENSE file for details.

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