Continuous Integration with SQLite
SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. You can use SQLite, if you do not want to test your code behaviour with other databases.
All Shippable official images come pre-installed with SQLite.
Adding SQLite to your project
You can add SQLite to your bundle for Ruby projects by specifying the following in your Gemfile:
gem "sqlite3", :platform => :ruby
If you're using ActiveRecord, you can add the following to your config/database.yml:
test: adapter: sqlite3 database: ":memory:" timeout: 500
More on SQLite3 can be found on official SQLite website.