title: LoadError: cannot load such file -- minitest/reporters
body: <p>I am getting an error while testing my database.</p>
  
  <p>I have two models. When I added the second one and the Active Admin gem I started getting the error.</p>
  
  <pre><code> bundle exec rake test:models --trace
  ** Invoke test:models (first_time)
  ** Invoke test:prepare (first_time)
  ** Execute test:prepare
  ** Execute test:models
  rake aborted!
  LoadError: cannot load such file -- minitest/reporters
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `block in require'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
  /Users/nischaynamdev/RubymineProjects/hostel_mess_pay/test/test_helper.rb:4:in `&lt;top (required)&gt;'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `block in require'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
  /Users/nischaynamdev/RubymineProjects/hostel_mess_pay/test/models/admin_user_test.rb:1:in `&lt;top (required)&gt;'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `block in require'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:114:in `block (3 levels) in define'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:114:in `each'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:114:in `block (2 levels) in define'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:113:in `each'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.2/lib/rails/test_unit/sub_test_task.rb:113:in `block in define'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/task.rb:240:in `call'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/task.rb:240:in `block in execute'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/task.rb:235:in `each'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/task.rb:235:in `execute'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/task.rb:165:in `invoke'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/application.rb:150:in `invoke_task'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/application.rb:106:in `block (2 levels) in top_level'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/application.rb:106:in `each'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/application.rb:106:in `block in top_level'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/application.rb:115:in `run_with_threads'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/application.rb:100:in `top_level'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/application.rb:78:in `block in run'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/application.rb:176:in `standard_exception_handling'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/lib/rake/application.rb:75:in `run'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rake-10.5.0/bin/rake:33:in `&lt;top (required)&gt;'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/bin/rake:23:in `load'
  /Users/nischaynamdev/.rbenv/versions/2.2.3/bin/rake:23:in `&lt;main&gt;'
  Tasks: TOP =&gt; test:models
  </code></pre>
  
  <p>This is my gemfile: </p>
  
  <pre><code> source 'https://rubygems.org'
      gem 'activeadmin', github: 'activeadmin'
      gem 'devise'
      gem 'cancan'
      gem 'draper'
      gem 'pundit'
      gem 'rails',        '4.2.2'
      gem 'bootstrap-sass', '~&gt; 3.3', '&gt;= 3.3.6'
      gem 'sass-rails',   '5.0.2'
      gem 'uglifier',     '2.5.3'
      gem 'coffee-rails', '4.1.0'
      gem 'jquery-rails', '4.0.3'
      gem 'turbolinks',   '2.3.0'
      gem 'jbuilder',     '2.2.3'
      gem 'sdoc',         '0.4.0', group: :doc
  
      group :development, :test do
        gem 'sqlite3',     '1.3.9'
        gem 'byebug',      '3.4.0'
        gem 'web-console', '2.0.0.beta3'
        gem 'spring',      '1.1.3'
        gem 'guard'
        gem 'guard-minitest'
      end
  
      group :test do
        gem 'minitest-reporters', '~&gt; 1.1', '&gt;= 1.1.7'
        gem 'mini_backtrace',     '0.1.3'
        gem 'ruby-prof'
      end
  
      group :production do
        gem 'pg',             '0.17.1'
        gem 'rails_12factor', '0.0.2'
      end
  </code></pre>