ruby on rails - Minitest - NoMethodError: undefined method `get' -

i stuck error when run simple test minitest-rails gem. have rails 4.1.5 , minitest 5.4.0

rake test:controllers

1) error: dashboardcontroller::index action#test_0001_anonymous: nomethoderror: undefined method get' #<#<class:0x00000008e28170>:0x00000008eeb9b8> test/controllers/dashboard_controller_test.rb:6:inblock (3 levels) in '

test:

require "test_helper"  describe dashboardcontroller   context "index action"     before       :index     end     { must_respond_with :success }     "must render index view"       must_render_template :index     end   end end 

my test_helper:

env["rails_env"] = "test" require file.expand_path("../../config/environment", __file__) require "rails/test_help" require "minitest/rails" require "minitest/rails/capybara"   class minitest::spec   class << self     alias :context :describe   end end   class requesttest < minitest::spec   include rails.application.routes.url_helpers    register_spec_type(/request$/, self) end   class actiondispatch::integrationtest   # register "request" tests handled integrationtest   register_spec_type(/request( ?test)?\z/i, self) end  class activesupport::testcase   activerecord::migration.check_pending!    # setup fixtures in test/fixtures/*.(yml|csv) tests in alphabetical order.   #   # note: you'll still have declare fixtures explicitly in integration tests   # -- not yet inherit setting   fixtures :all    # add more helper methods used tests here...   extend minitest::spec::dsl end 

there many things wrong doing. understand want use minitest's spec dsl in rails tests, correct? looks doing things accomplish don't need do. don't understand why half code in test_helper.rb file there. suspect have other code doing things not being shown.

here did reproduce setup:

$ echo "creating new rails app" ☣ [rails41:rails41] $ rails new undefined_get ☣ [rails41:rails41] $ cd undefined_get/ $ echo "generate dashboard controller" $ rails g controller dashboard index $ echo "add minitest-rails dependencies" $ echo 'gem "minitest-rails"' >> gemfile $ echo 'gem "minitest-rails-capybara"' >> gemfile $ bundle install $ echo "the test runs fine now:" $ rake test run options: --seed 47210  # running:  .  finished in 0.457972s, 2.1835 runs/s, 2.1835 assertions/s.  1 runs, 1 assertions, 0 failures, 0 errors, 0 skips $ echo "update test code , test_helper code" $ echo "use whatever editor want. not shown here." $ echo "now rerun tests:" $ rake test rake aborted! nomethoderror: undefined method `context' #<class:0x007f860258ae50> 

the error different yours. aliased method context describe in test_helper.rb file, unfortunately object aliased not in inheritance chain rails test objects. rails test objects extend minitest::spec::dsl, not inherit minitest::spec. so, suspicious code provided indeed producing results have presented. said, here code in test_helper.rb run test:

env['rails_env'] ||= 'test' require file.expand_path('../../config/environment', __file__) require 'rails/test_help' require "minitest/rails" require "minitest/rails/capybara"  class activesupport::testcase   # setup fixtures in test/fixtures/*.yml tests in alphabetical order.   fixtures :all    # allow context used describe   class << self     alias :context :describe   end    # add more helper methods used tests here... end 

this standard test_helper.rb 2 changes. first, has requires minitest-rails , minitest-rails-capybara. need in order enable minitest spec dsl in rails tests. second, adds alias context describe on activesupport::testcase, basis rails tests. if want add tests not inherit activesupport::testcase can alias on minitest::spec, not use context within controller tests.

still here? okay. why did code give different error mine? test object used controller tests isn't actioncontroller::testcase. because error undefined method get. get method actioncontroller::testcase defines, , not on minitest::spec. so, somehow messed minitest configuration. simple way make sure tests using correct test objects add additional assertion test. this:

require "test_helper"  describe dashboardcontroller   context "index action"     before       # make sure using correct test class       self.class.ancestors.must_include actioncontroller::testcase       # continue setup       :index     end     { must_respond_with :success }     "must render index view"       must_render_template :index     end   end end 

if first assertion fails know have done wrong in configuration.