A simple fix to run your Rails tests with sqlite. From the example by Chris Roos.
Add the gem to your bundle by adding
In your database.yml, use:
test: adapter: sqlite3 database: ":memory:"
It runs much faster!
You can also adjust the verbosity of the output:
test: adapter: sqlite3 database: ":memory:" verbosity: silent
To use rails migrations instead of loading
test: adapter: sqlite3 database: ":memory:" migrate: true
You can also use this with other (testing) environments, not just 'test'.
In general, Bundler should pick a compatible version for you if you don't
specify one in your
That said, the latest version of this gem is compatible with Rails 5.0, 5.1 and
If you're still on Rails 4, you can use version 1.3.0. Unfortunately, the hard
requirement of Ruby 2.2 or above for Rails 5 means
support Rails 4 and 5 at the same time.
If you're using a version of Rails older than 4, your first priority should be upgrading Rails. If that's really not an option, you can use version 1.2.2 of this gem with Rails 3.2. If you're using Rails 3.1 or 3.0, use version 1.1.0. If you're using Rails 2.3, use version 0.2.2. If you're using an even older version of Rails, use version 0.1.3.
The original hack this gem is based on was created by Chris Roos.
The hack was adapted as a Rails plugin by Geoffrey Grosenbach.
The following people have contributed:
- Kakutani Shintaro
- Matijs van Zuijlen
- Erik Hanson & Matt Scilipoti
- Greg Weber
- Stephan Zalewski
MemoryTestFix is maintained by Matijs van Zuijlen