Configure test frameworks and fixture replacements in rails

If you want to use another test framework for rails like rspec and factories instead of fixtures. You should adapt config/application.rb as follows:

config.generators do |g|
 g.test_framework :rspec # Use RSpec as testing framework.
 g.fallbacks[:rspec] = :test_unit # Fallback to Test-Unit if RSpec is not available.
 g.fixture_replacement :factory_girl # Use FactoryGirl instead of fixtures.
end