Allow Minitest and Rspec to coexist

test_helper.rb

# Minitest and Rspec will need separate environments because both gems define 'describe'
# 'm' is a nice test runner gem. It lets you run 'm test/models/foo.rb:21'

# Gemfile

group :minitest do
  gem 'minitest-rails'
  gem 'minitest-rails-capybara'
  gem 'factory_girl_rails'
  gem 'm'
end

# Next, configure your Rakefile

# Rakefile

require File.expand_path('../config/application', __FILE__)
require 'rake'
require 'rake/testtask'

Web::Application.load_tasks

Rake::TestTask.new do |t|
  t.pattern = 'test/**/*.rb'
  t.libs.push 'test'
end

Rake.application.instance_variable_get('@tasks').delete('default') # This prevents Rspec from owning 'rake'
task :default => [:spec, :test]

# Now let Minitest own your generators: 

# config/application.rb, inside Web, Application

    config.generators do |g|
      g.test_framework :mini_test, :spec => true, :fixture => false
    end

# Next, create the environment file

$ cp config/environments/test.rb config/environments/minitest.rb

# test/test_helper.rb
# Finally, make sure your test/test_helper.rb uses the minitest environment.

ENV["RAILS_ENV"] = "minitest"
require File.expand_path('../../config/environment', __FILE__)

class << ActiveSupport::TestCase
  remove_method :describe
end

require "minitest/spec"
require "minitest/autorun"
require "minitest/rails"

# Uncomment if you want Capybara in accceptance/integration tests
require "minitest/rails/capybara"

# Uncomment if you want awesome colorful output
require "minitest/pride"

class MiniTest::Rails::ActiveSupport::TestCase
  # Setup all fixtures in test/fixtures/*.(yml|csv) for all tests in alphabetical order.
  # fixtures :all

  # Add more helper methods to be used by all tests here...
  include FactoryGirl::Syntax::Methods
end