Removed Mocha from app generators tests

railties/test/generators/app_generator_test.rb

 require 'generators/generators_test_helper'
 require 'rails/generators/rails/app/app_generator'
 require 'generators/shared_generator_tests'
-require 'mocha/setup' # FIXME: stop using mocha
 
 DEFAULT_APP_FILES = %w(
   .gitignore
@@ -117,35 +116,33 @@ def test_application_name_is_detected_if_it_exists_and_app_folder_renamed
 
     run_generator [app_root]
 
-    Rails.application.config.root = app_moved_root
-    Rails.application.class.stubs(:name).returns("Myapp")
-    Rails.application.stubs(:is_a?).returns(Rails::Application)
+    stub_rails_application(app_moved_root) do
+      Rails.application.stub(:is_a?, -> *args { Rails::Application }) do
+        FileUtils.mv(app_root, app_moved_root)
 
-    FileUtils.mv(app_root, app_moved_root)
+        # make sure we are in correct dir
+        FileUtils.cd(app_moved_root)
 
-    # make sure we are in correct dir
-    FileUtils.cd(app_moved_root)
-
-    generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true },
-                                                               destination_root: app_moved_root, shell: @shell
-    generator.send(:app_const)
-    quietly { generator.send(:update_config_files) }
-    assert_file "myapp_moved/config/environment.rb", /Rails\.application\.initialize!/
-    assert_file "myapp_moved/config/initializers/session_store.rb", /_myapp_session/
+        generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true },
+                                                                   destination_root: app_moved_root, shell: @shell
+        generator.send(:app_const)
+        quietly { generator.send(:update_config_files) }
+        assert_file "myapp_moved/config/environment.rb", /Rails\.application\.initialize!/
+        assert_file "myapp_moved/config/initializers/session_store.rb", /_myapp_session/
+      end
+    end
   end
 
   def test_rails_update_generates_correct_session_key
     app_root = File.join(destination_root, 'myapp')
     run_generator [app_root]
 
-    Rails.application.config.root = app_root
-    Rails.application.class.stubs(:name).returns("Myapp")
-    Rails.application.stubs(:is_a?).returns(Rails::Application)
-
-    generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
-    generator.send(:app_const)
-    quietly { generator.send(:update_config_files) }
-    assert_file "myapp/config/initializers/session_store.rb", /_myapp_session/
+    stub_rails_application(app_root) do
+      generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
+      generator.send(:app_const)
+      quietly { generator.send(:update_config_files) }
+      assert_file "myapp/config/initializers/session_store.rb", /_myapp_session/
+    end
   end
 
   def test_new_application_use_json_serialzier
@@ -158,14 +155,12 @@ def test_rails_update_keep_the_cookie_serializer_if_it_is_already_configured
     app_root = File.join(destination_root, 'myapp')
     run_generator [app_root]
 
-    Rails.application.config.root = app_root
-    Rails.application.class.stubs(:name).returns("Myapp")
-    Rails.application.stubs(:is_a?).returns(Rails::Application)
-
-    generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
-    generator.send(:app_const)
-    quietly { generator.send(:update_config_files) }
-    assert_file("#{app_root}/config/initializers/cookies_serializer.rb", /Rails\.application\.config\.action_dispatch\.cookies_serializer = :json/)
+    stub_rails_application(app_root) do
+      generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
+      generator.send(:app_const)
+      quietly { generator.send(:update_config_files) }
+      assert_file("#{app_root}/config/initializers/cookies_serializer.rb", /Rails\.application\.config\.action_dispatch\.cookies_serializer = :json/)
+    end
   end
 
   def test_rails_update_does_not_create_callback_terminator_initializer
@@ -174,14 +169,12 @@ def test_rails_update_does_not_create_callback_terminator_initializer
 
     FileUtils.rm("#{app_root}/config/initializers/callback_terminator.rb")
 
-    Rails.application.config.root = app_root
-    Rails.application.class.stubs(:name).returns("Myapp")
-    Rails.application.stubs(:is_a?).returns(Rails::Application)
-
-    generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
-    generator.send(:app_const)
-    quietly { generator.send(:update_config_files) }
-    assert_no_file "#{app_root}/config/initializers/callback_terminator.rb"
+    stub_rails_application(app_root) do
+      generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
+      generator.send(:app_const)
+      quietly { generator.send(:update_config_files) }
+      assert_no_file "#{app_root}/config/initializers/callback_terminator.rb"
+    end
   end
 
   def test_rails_update_does_not_remove_callback_terminator_initializer_if_already_present
@@ -190,14 +183,12 @@ def test_rails_update_does_not_remove_callback_terminator_initializer_if_already
 
     FileUtils.touch("#{app_root}/config/initializers/callback_terminator.rb")
 
-    Rails.application.config.root = app_root
-    Rails.application.class.stubs(:name).returns("Myapp")
-    Rails.application.stubs(:is_a?).returns(Rails::Application)
-
-    generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
-    generator.send(:app_const)
-    quietly { generator.send(:update_config_files) }
-    assert_file "#{app_root}/config/initializers/callback_terminator.rb"
+    stub_rails_application(app_root) do
+      generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
+      generator.send(:app_const)
+      quietly { generator.send(:update_config_files) }
+      assert_file "#{app_root}/config/initializers/callback_terminator.rb"
+    end
   end
 
   def test_rails_update_set_the_cookie_serializer_to_marchal_if_it_is_not_already_configured
@@ -206,14 +197,12 @@ def test_rails_update_set_the_cookie_serializer_to_marchal_if_it_is_not_already_
 
     FileUtils.rm("#{app_root}/config/initializers/cookies_serializer.rb")
 
-    Rails.application.config.root = app_root
-    Rails.application.class.stubs(:name).returns("Myapp")
-    Rails.application.stubs(:is_a?).returns(Rails::Application)
-
-    generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
-    generator.send(:app_const)
-    quietly { generator.send(:update_config_files) }
-    assert_file("#{app_root}/config/initializers/cookies_serializer.rb", /Rails\.application\.config\.action_dispatch\.cookies_serializer = :marshal/)
+    stub_rails_application(app_root) do
+      generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
+      generator.send(:app_const)
+      quietly { generator.send(:update_config_files) }
+      assert_file("#{app_root}/config/initializers/cookies_serializer.rb", /Rails\.application\.config\.action_dispatch\.cookies_serializer = :marshal/)
+    end
   end
 
   def test_rails_update_does_not_create_active_record_belongs_to_required_by_default
@@ -222,14 +211,12 @@ def test_rails_update_does_not_create_active_record_belongs_to_required_by_defau
 
     FileUtils.rm("#{app_root}/config/initializers/active_record_belongs_to_required_by_default.rb")
 
-    Rails.application.config.root = app_root
-    Rails.application.class.stubs(:name).returns("Myapp")
-    Rails.application.stubs(:is_a?).returns(Rails::Application)
-
-    generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
-    generator.send(:app_const)
-    quietly { generator.send(:update_config_files) }
-    assert_no_file "#{app_root}/config/initializers/active_record_belongs_to_required_by_default.rb"
+    stub_rails_application(app_root) do
+      generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
+      generator.send(:app_const)
+      quietly { generator.send(:update_config_files) }
+      assert_no_file "#{app_root}/config/initializers/active_record_belongs_to_required_by_default.rb"
+    end
   end
 
   def test_rails_update_does_not_remove_active_record_belongs_to_required_by_default_if_already_present
@@ -238,14 +225,12 @@ def test_rails_update_does_not_remove_active_record_belongs_to_required_by_defau
 
     FileUtils.touch("#{app_root}/config/initializers/active_record_belongs_to_required_by_default.rb")
 
-    Rails.application.config.root = app_root
-    Rails.application.class.stubs(:name).returns("Myapp")
-    Rails.application.stubs(:is_a?).returns(Rails::Application)
-
-    generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
-    generator.send(:app_const)
-    quietly { generator.send(:update_config_files) }
-    assert_file "#{app_root}/config/initializers/active_record_belongs_to_required_by_default.rb"
+    stub_rails_application(app_root) do
+      generator = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true }, destination_root: app_root, shell: @shell
+      generator.send(:app_const)
+      quietly { generator.send(:update_config_files) }
+      assert_file "#{app_root}/config/initializers/active_record_belongs_to_required_by_default.rb"
+    end
   end
 
   def test_application_names_are_not_singularized
@@ -456,13 +441,15 @@ def test_template_from_dir_pwd
   end
 
   def test_usage_read_from_file
-    File.expects(:read).returns("USAGE FROM FILE")
-    assert_equal "USAGE FROM FILE", Rails::Generators::AppGenerator.desc
+    assert_called(File, :read, returns: "USAGE FROM FILE") do
+      assert_equal "USAGE FROM FILE", Rails::Generators::AppGenerator.desc
+    end
   end
 
   def test_default_usage
-    Rails::Generators::AppGenerator.expects(:usage_path).returns(nil)
-    assert_match(/Create rails files for app generator/, Rails::Generators::AppGenerator.desc)
+    assert_called(Rails::Generators::AppGenerator, :usage_path, returns: nil) do
+      assert_match(/Create rails files for app generator/, Rails::Generators::AppGenerator.desc)
+    end
   end
 
   def test_default_namespace
@@ -538,18 +525,31 @@ def test_spring
 
   def test_spring_binstubs
     jruby_skip "spring doesn't run on JRuby"
-    generator.stubs(:bundle_command).with('install')
-    generator.expects(:bundle_command).with('exec spring binstub --all').once
-    quietly { generator.invoke_all }
+    command_check = -> command do
+      @binstub_called ||= 0
+
+      case command
+      when 'install'
+        # Called when running bundle, we just want to stub it so nothing to do here.
+      when 'exec spring binstub --all'
+        @binstub_called += 1
+        assert_equal 1, @binstub_called, "exec spring binstub --all expected to be called once, but was called #{@install_called} times."
+      end
+    end
+
+    generator.stub :bundle_command, command_check do
+      quietly { generator.invoke_all }
+    end
   end
 
   def test_spring_no_fork
     jruby_skip "spring doesn't run on JRuby"
-    Process.stubs(:respond_to?).with(:fork).returns(false)
-    run_generator
+    assert_called_with(Process, :respond_to?, [:fork], returns: false) do
+      run_generator
 
-    assert_file "Gemfile" do |content|
-      assert_no_match(/spring/, content)
+      assert_file "Gemfile" do |content|
+        assert_no_match(/spring/, content)
+      end
     end
   end
 
@@ -651,18 +651,37 @@ def test_after_bundle_callback
     template = %{ after_bundle { run 'echo ran after_bundle' } }
     template.instance_eval "def read; self; end" # Make the string respond to read
 
-    generator([destination_root], template: path).expects(:open).with(path, 'Accept' => 'application/x-thor-template').returns(template)
+    check_open = -> *args do
+      assert_equal [ path, 'Accept' => 'application/x-thor-template' ], args
+      template
+    end
 
-    bundler_first = sequence('bundle, binstubs, after_bundle')
-    generator.expects(:bundle_command).with('install').once.in_sequence(bundler_first)
-    generator.expects(:bundle_command).with('exec spring binstub --all').in_sequence(bundler_first)
-    generator.expects(:run).with('echo ran after_bundle').in_sequence(bundler_first)
+    sequence = ['install', 'exec spring binstub --all', 'echo ran after_bundle']
+    ensure_bundler_first = -> command do
+      @sequence_step ||= 0
 
-    quietly { generator.invoke_all }
+      assert_equal sequence[@sequence_step], command, "commands should be called in sequence #{sequence}"
+      @sequence_step += 1
+    end
+
+    generator([destination_root], template: path).stub(:open, check_open, template) do
+      generator.stub(:bundle_command, ensure_bundler_first) do
+        generator.stub(:run, ensure_bundler_first) do
+          quietly { generator.invoke_all }
+        end
+      end
+    end
   end
 
   protected
 
+  def stub_rails_application(root)
+    Rails.application.config.root = root
+    Rails.application.class.stub(:name, "Myapp") do
+      yield
+    end
+  end
+
   def action(*args, &block)
     capture(:stdout) { generator.send(*args, &block) }
   end