config.cache_classes = false messing up rspec tests?

Question

I\'m following the Ruby on Rails Tutorial by Michael Hartl (railstutorial.org).

At some point I got tired of tests failing just bescause the tests used old cached v

Answer 1

I had exactly the same problem and like you setting config.cache_classes to true solved the problem. But caching classes in the test environment really isn't what you want I don't think. I certainly don't understand why caching classes makes the tests pass.

So the way I found to solve this was to install a database cleane as the reason the tests are failing is due to duplicate entries in the test database. https://github.com/bmabey/database_cleaner

Then in your gemfile, in your test group add this.

gem 'database_cleaner', '0.6.6'

then run "bundle install" to install this gem

Then... in your spec_helper.rb file, add this..

RSpec.configure do |config|
.
.
.
.
   config.before(:each) do
      DatabaseCleaner.strategy = :truncation
      DatabaseCleaner.clean
   end

This will clear your test database before each run of your rspec tests.

Hope this helps. Cheers, mark.