LesliTesting provides the shared test configuration used across the Lesli Framework.

It standardizes Minitest output, SimpleCov profiles, coverage reports, and fixture loading for Rails applications, engines, and Ruby gems.

• Profiles for Rails applications, engines, and Ruby gems
• Human-friendly Minitest terminal reporting
• SimpleCov HTML, console, and Cobertura reports
• Configurable minimum coverage
• Shared Lesli fixture loading
• CI-aware test and coverage output

Add LesliTesting to the application:

bundle add lesli_testing

Require LesliTesting near the beginning of test/test_helper.rb, then choose the matching project profile:

ENV["RAILS_ENV"] ||= "test"

require "lesli_testing"

LesliTesting.app("LesliBuilder")
# LesliTesting.engine("LesliShield")
# LesliTesting.gem("LesliDate")

Pass configuration to the selected profile:

LesliTesting.engine(
  "LesliShield",
  coverage_missing_len: 30,
  coverage_min_coverage: 80
)

bin/rails test
COVERAGE=true bin/rails test
COVERAGE=true CI=true bin/rails test

Set QUIET=true to suppress the per-test lines printed by the custom reporter.

Clone the repository and install its dependencies:

git clone https://github.com/LesliTech/LesliTesting.git
cd LesliTesting
bundle install

To use local source from a Lesli development workspace, reference it from the host application's Gemfile:

gem "lesli_testing", path: "gems/LesliTesting"

Run the default test task from the LesliTesting directory:

bundle exec rake

• Lesli website
• Documentation
• Release notes
• Issue tracker
• Source code

• X: @LesliTech
• hello@lesli.tech
• https://www.lesli.tech

Copyright (c) 2026, Lesli Technologies, S. A.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.

The complete license text is available in the license file.

The Open-Source SaaS Development Framework for Ruby on Rails.