From af72f6343b56c3cf7b6fb90aab9f6da60d68bd15 Mon Sep 17 00:00:00 2001
From: Jon Rowe <hello@jonrowe.co.uk>
Date: Mon, 4 Dec 2023 21:49:51 +0000
Subject: [PATCH] Remove usage of ammeter exist matcher

---
 .../rspec/channel/channel_generator_spec.rb   |  10 +-
 .../controller/controller_generator_spec.rb   | 146 +++--
 .../rspec/feature/feature_generator_spec.rb   |  30 +-
 .../generator/generator_generator_spec.rb     |  11 +-
 .../rspec/helper/helper_generator_spec.rb     |  15 +-
 .../rspec/install/install_generator_spec.rb   |   2 +-
 .../rspec/job/job_generator_spec.rb           |  17 +-
 .../rspec/mailbox/mailbox_generator_spec.rb   |  10 +-
 .../rspec/mailer/mailer_generator_spec.rb     |  70 ++-
 .../rspec/model/model_generator_spec.rb       |   6 +-
 .../rspec/scaffold/scaffold_generator_spec.rb | 531 +++++++++++-------
 .../rspec/system/system_generator_spec.rb     |  15 +-
 spec/support/generators.rb                    |  64 +--
 13 files changed, 551 insertions(+), 376 deletions(-)

diff --git a/spec/generators/rspec/channel/channel_generator_spec.rb b/spec/generators/rspec/channel/channel_generator_spec.rb
index 96c5deaada..03c2f79256 100644
--- a/spec/generators/rspec/channel/channel_generator_spec.rb
+++ b/spec/generators/rspec/channel/channel_generator_spec.rb
@@ -5,13 +5,11 @@
 RSpec.describe Rspec::Generators::ChannelGenerator, type: :generator, skip: !RSpec::Rails::FeatureCheck.has_action_cable_testing? do
   setup_default_destination
 
-  describe 'the generated files' do
-    before { run_generator %w[chat] }
+  before { run_generator %w[chat] }
 
-    subject { file("spec/channels/chat_channel_spec.rb") }
+  subject(:channel_spec) { file("spec/channels/chat_channel_spec.rb") }
 
-    it { is_expected.to exist }
-    it { is_expected.to contain(/require 'rails_helper'/) }
-    it { is_expected.to contain(/describe ChatChannel, #{type_metatag(:channel)}/) }
+  it "generates a channel spec file" do
+    expect(channel_spec).to contain(/require 'rails_helper'/).and(contain(/describe ChatChannel, #{type_metatag(:channel)}/))
   end
 end
diff --git a/spec/generators/rspec/controller/controller_generator_spec.rb b/spec/generators/rspec/controller/controller_generator_spec.rb
index 3885194abf..3724c49e20 100644
--- a/spec/generators/rspec/controller/controller_generator_spec.rb
+++ b/spec/generators/rspec/controller/controller_generator_spec.rb
@@ -6,18 +6,17 @@
   setup_default_destination
 
   describe 'request specs' do
-    subject { file('spec/requests/posts_spec.rb') }
+    subject(:filename) { file('spec/requests/posts_spec.rb') }
 
     describe 'generated by default' do
       before do
         run_generator %w[posts]
       end
 
-      describe 'the spec' do
-        it { is_expected.to exist }
-        it { is_expected.to contain(/require 'rails_helper'/) }
-        it { is_expected.to contain(/^RSpec.describe "Posts", #{type_metatag(:request)}/) }
-        it { is_expected.to contain('pending') }
+      it 'includes the standard boilerplate' do
+        expect(filename).to contain(/require 'rails_helper'/)
+                              .and(contain(/^RSpec.describe "Posts", #{type_metatag(:request)}/))
+                              .and(contain('pending'))
       end
     end
 
@@ -25,7 +24,10 @@
       before do
         run_generator %w[posts --no-request_specs]
       end
-      it { is_expected.not_to exist }
+
+      it 'skips the file' do
+        expect(File.exist?(filename)).to be false
+      end
     end
 
     describe 'with actions' do
@@ -33,22 +35,24 @@
         run_generator %w[posts index custom_action]
       end
 
-      it { is_expected.to exist }
-      it { is_expected.to contain('get "/posts/index"') }
-      it { is_expected.to contain('get "/posts/custom_action"') }
+      it 'includes the standard boilerplate' do
+        expect(filename).to contain('get "/posts/index"')
+                             .and(contain('get "/posts/custom_action"'))
+      end
     end
 
     describe 'with namespace and actions' do
-      subject { file('spec/requests/admin/external/users_spec.rb') }
+      subject(:filename) { file('spec/requests/admin/external/users_spec.rb') }
 
       before do
         run_generator %w[admin::external::users index custom_action]
       end
 
-      it { is_expected.to exist }
-      it { is_expected.to contain(/^RSpec.describe "Admin::External::Users", #{type_metatag(:request)}/) }
-      it { is_expected.to contain('get "/admin/external/users/index"') }
-      it { is_expected.to contain('get "/admin/external/users/custom_action"') }
+      it 'includes the standard boilerplate' do
+        expect(filename).to contain(/^RSpec.describe "Admin::External::Users", #{type_metatag(:request)}/)
+                             .and(contain('get "/admin/external/users/index"'))
+                             .and(contain('get "/admin/external/users/custom_action"'))
+      end
     end
   end
 
@@ -58,18 +62,27 @@
         before do
           run_generator %w[posts index show --no-view-specs]
         end
+
         describe 'index.html.erb' do
-          subject { file('spec/views/posts/index.html.erb_spec.rb') }
-          it { is_expected.not_to exist }
+          subject(:filename) { file('spec/views/posts/index.html.erb_spec.rb') }
+
+          it 'skips the file' do
+            expect(File.exist?(filename)).to be false
+          end
         end
       end
+
       describe 'with no actions' do
         before do
           run_generator %w[posts]
         end
+
         describe 'index.html.erb' do
-          subject { file('spec/views/posts/index.html.erb_spec.rb') }
-          it { is_expected.not_to exist }
+          subject(:filename) { file('spec/views/posts/index.html.erb_spec.rb') }
+
+          it 'skips the file' do
+            expect(File.exist?(filename)).to be false
+          end
         end
       end
 
@@ -79,8 +92,11 @@
         end
 
         describe 'index.html.erb' do
-          subject { file('spec/views/posts/index.html._spec.rb') }
-          it { is_expected.not_to exist }
+          subject(:filename) { file('spec/views/posts/index.html._spec.rb') }
+
+          it 'skips the file' do
+            expect(File.exist?(filename)).to be false
+          end
         end
       end
     end
@@ -90,46 +106,62 @@
         before do
           run_generator %w[posts index show]
         end
+
         describe 'index.html.erb' do
-          subject { file('spec/views/posts/index.html.erb_spec.rb') }
-          it { is_expected.to exist }
-          it { is_expected.to contain(/require 'rails_helper'/) }
-          it { is_expected.to contain(/^RSpec.describe "posts\/index.html.erb", #{type_metatag(:view)}/) }
+          subject(:filename) { file('spec/views/posts/index.html.erb_spec.rb') }
+
+          it 'includes the standard boilerplate' do
+            expect(filename).to contain(/require 'rails_helper'/)
+                                 .and(contain(/^RSpec.describe "posts\/index.html.erb", #{type_metatag(:view)}/))
+          end
         end
+
         describe 'show.html.erb' do
-          subject { file('spec/views/posts/show.html.erb_spec.rb') }
-          it { is_expected.to exist }
-          it { is_expected.to contain(/require 'rails_helper'/) }
-          it { is_expected.to contain(/^RSpec.describe "posts\/show.html.erb", #{type_metatag(:view)}/) }
+          subject(:filename) { file('spec/views/posts/show.html.erb_spec.rb') }
+
+          it 'includes the standard boilerplate' do
+            expect(filename).to contain(/require 'rails_helper'/)
+                                 .and(contain(/^RSpec.describe "posts\/show.html.erb", #{type_metatag(:view)}/))
+          end
         end
       end
+
       describe 'with haml' do
         before do
           run_generator %w[posts index --template_engine haml]
         end
+
         describe 'index.html.haml' do
-          subject { file('spec/views/posts/index.html.haml_spec.rb') }
-          it { is_expected.to exist }
-          it { is_expected.to contain(/require 'rails_helper'/) }
-          it { is_expected.to contain(/^RSpec.describe "posts\/index.html.haml", #{type_metatag(:view)}/) }
+          subject(:filename) { file('spec/views/posts/index.html.haml_spec.rb') }
+
+          it 'includes the standard boilerplate' do
+            expect(filename).to contain(/require 'rails_helper'/)
+                                 .and(contain(/^RSpec.describe "posts\/index.html.haml", #{type_metatag(:view)}/))
+          end
         end
       end
     end
 
     describe 'are removed' do
-      subject { run_generator %w[posts], behavior: :revoke }
-      it { is_expected.to match('remove  spec/views/posts') }
+      subject(:output) { run_generator %w[posts], behavior: :revoke }
+
+      it 'will remove the file' do
+        expect(output).to match('remove  spec/views/posts')
+      end
     end
   end
 
   describe 'routing spec' do
-    subject { file('spec/routing/posts_routing_spec.rb') }
+    subject(:filename) { file('spec/routing/posts_routing_spec.rb') }
 
     describe 'with no flag' do
       before do
         run_generator %w[posts seek and destroy]
       end
-      it { is_expected.not_to exist }
+
+      it 'skips the file' do
+        expect(File.exist?(filename)).to be false
+      end
     end
 
     describe 'with --routing-specs  flag' do
@@ -137,17 +169,22 @@
         before do
           run_generator %w[posts --routing-specs]
         end
-        it { is_expected.not_to exist }
+
+        it 'skips the file' do
+          expect(File.exist?(filename)).to be false
+        end
       end
 
       describe 'with action parameter' do
         before { run_generator %w[posts seek --routing-specs] }
 
-        it { is_expected.to contain(/require 'rails_helper'/) }
-        it { is_expected.to contain(/^RSpec.describe 'PostsController', #{type_metatag(:routing)}/) }
-        it { is_expected.to contain(/describe 'routing'/) }
-        it { is_expected.to contain(/it 'routes to #seek'/) }
-        it { is_expected.to contain(/expect\(get: "\/posts\/seek"\).to route_to\("posts#seek"\)/) }
+        it 'includes the standard boilerplate' do
+          expect(filename).to contain(/require 'rails_helper'/)
+                                .and(contain(/^RSpec.describe 'PostsController', #{type_metatag(:routing)}/))
+                                .and(contain(/describe 'routing'/))
+                                .and(contain(/it 'routes to #seek'/))
+                                .and(contain(/expect\(get: "\/posts\/seek"\).to route_to\("posts#seek"\)/))
+        end
       end
     end
 
@@ -155,15 +192,18 @@
       before do
         run_generator %w[posts seek and destroy --no-routing_specs]
       end
-      it { is_expected.not_to exist }
+
+      it 'skips the file' do
+        expect(File.exist?(filename)).to be false
+      end
     end
   end
 
   describe 'controller specs' do
-    subject { file('spec/controllers/posts_controller_spec.rb') }
+    subject(:filename) { file('spec/controllers/posts_controller_spec.rb') }
 
-    describe 'are not generated' do
-      it { is_expected.not_to exist }
+    it 'are not generated' do
+      expect(File.exist?(filename)).to be false
     end
 
     describe 'with --controller-specs flag' do
@@ -172,9 +212,10 @@
       end
 
       describe 'the spec' do
-        it { is_expected.to exist }
-        it { is_expected.to contain(/require 'rails_helper'/) }
-        it { is_expected.to contain(/^RSpec.describe PostsController, #{type_metatag(:controller)}/) }
+        it 'includes the standard boilerplate' do
+          expect(filename).to contain(/require 'rails_helper'/)
+                               .and(contain(/^RSpec.describe PostsController, #{type_metatag(:controller)}/))
+        end
       end
     end
 
@@ -182,7 +223,10 @@
       before do
         run_generator %w[posts --no-controller-specs]
       end
-      it { is_expected.not_to exist }
+
+      it 'are skipped' do
+        expect(File.exist?(filename)).to be false
+      end
     end
   end
 end
diff --git a/spec/generators/rspec/feature/feature_generator_spec.rb b/spec/generators/rspec/feature/feature_generator_spec.rb
index 352bf76179..7149c1e1b8 100644
--- a/spec/generators/rspec/feature/feature_generator_spec.rb
+++ b/spec/generators/rspec/feature/feature_generator_spec.rb
@@ -10,16 +10,14 @@
       before do
         run_generator %w[posts]
       end
+
       describe 'the spec' do
         subject(:feature_spec) { file('spec/features/posts_spec.rb') }
-        it "exists" do
-          expect(feature_spec).to exist
-        end
-        it "contains 'rails_helper'" do
-          expect(feature_spec).to contain(/require 'rails_helper'/)
-        end
-        it "contains the feature" do
-          expect(feature_spec).to contain(/^RSpec.feature "Posts", #{type_metatag(:feature)}/)
+
+        it 'includes the standard boilerplate' do
+          expect(
+            feature_spec
+          ).to contain(/require 'rails_helper'/).and(contain(/^RSpec.feature "Posts", #{type_metatag(:feature)}/))
         end
       end
     end
@@ -28,12 +26,11 @@
       before do
         run_generator %w[folder/posts]
       end
+
       describe 'the spec' do
         subject(:feature_spec) { file('spec/features/folder/posts_spec.rb') }
-        it "exists" do
-          expect(feature_spec).to exist
-        end
-        it "contains the feature" do
+
+        it 'includes the standard boilerplate' do
           expect(feature_spec).to contain(/^RSpec.feature "Folder::Posts", #{type_metatag(:feature)}/)
         end
       end
@@ -43,11 +40,10 @@
       before do
         run_generator %w[posts --singularize]
       end
+
       describe 'the spec' do
         subject(:feature_spec) { file('spec/features/post_spec.rb') }
-        it "exists with the appropriate filename" do
-          expect(feature_spec).to exist
-        end
+
         it "contains the singularized feature" do
           expect(feature_spec).to contain(/^RSpec.feature "Post", #{type_metatag(:feature)}/)
         end
@@ -58,10 +54,12 @@
       before do
         run_generator %w[posts --no-feature-specs]
       end
+
       describe "the spec" do
         subject(:feature_spec) { file('spec/features/posts_spec.rb') }
+
         it "does not exist" do
-          expect(feature_spec).to_not exist
+          expect(File.exist?(feature_spec)).to be false
         end
       end
     end
diff --git a/spec/generators/rspec/generator/generator_generator_spec.rb b/spec/generators/rspec/generator/generator_generator_spec.rb
index 2d416e0bba..79ea4b51b8 100644
--- a/spec/generators/rspec/generator/generator_generator_spec.rb
+++ b/spec/generators/rspec/generator/generator_generator_spec.rb
@@ -9,14 +9,9 @@
     before do
       run_generator %w[posts]
     end
-    it "creates the spec file by default" do
-      expect(generator_spec).to exist
-    end
-    it "contains 'rails_helper in the spec file'" do
-      expect(generator_spec).to contain(/require 'rails_helper'/)
-    end
-    it "includes the generator type in the metadata" do
-      expect(generator_spec).to contain(/^RSpec.describe "Posts", #{type_metatag(:generator)}/)
+
+    it "include the standard boilerplate" do
+      expect(generator_spec).to contain(/require 'rails_helper'/).and(contain(/^RSpec.describe "Posts", #{type_metatag(:generator)}/))
     end
   end
 end
diff --git a/spec/generators/rspec/helper/helper_generator_spec.rb b/spec/generators/rspec/helper/helper_generator_spec.rb
index c628891c6d..271bb35b7b 100644
--- a/spec/generators/rspec/helper/helper_generator_spec.rb
+++ b/spec/generators/rspec/helper/helper_generator_spec.rb
@@ -5,22 +5,25 @@
 RSpec.describe Rspec::Generators::HelperGenerator, type: :generator do
   setup_default_destination
 
-  subject { file('spec/helpers/posts_helper_spec.rb') }
+  subject(:helper_spec) { file('spec/helpers/posts_helper_spec.rb') }
+
   describe 'generated by default' do
     before do
       run_generator %w[posts]
     end
 
-    describe 'the spec' do
-      it { is_expected.to exist }
-      it { is_expected.to contain(/require 'rails_helper'/) }
-      it { is_expected.to contain(/^RSpec.describe PostsHelper, #{type_metatag(:helper)}/) }
+    it 'includes the standard boilerplate' do
+      expect(helper_spec).to contain(/require 'rails_helper'/).and(contain(/^RSpec.describe PostsHelper, #{type_metatag(:helper)}/))
     end
   end
+
   describe 'skipped with a flag' do
     before do
       run_generator %w[posts --no-helper_specs]
     end
-    it { is_expected.not_to exist }
+
+    it 'does not create the helper spec' do
+      expect(File.exist?(helper_spec)).to be false
+    end
   end
 end
diff --git a/spec/generators/rspec/install/install_generator_spec.rb b/spec/generators/rspec/install/install_generator_spec.rb
index ec4a6db846..65b4244271 100644
--- a/spec/generators/rspec/install/install_generator_spec.rb
+++ b/spec/generators/rspec/install/install_generator_spec.rb
@@ -55,7 +55,7 @@ def filter_rails_from_backtrace
 
   it "generates .rspec" do
     run_generator
-    expect(file('.rspec')).to exist
+    expect(File.exist?(file('.rspec'))).to be true
   end
 
   it "generates spec/spec_helper.rb" do
diff --git a/spec/generators/rspec/job/job_generator_spec.rb b/spec/generators/rspec/job/job_generator_spec.rb
index 529fa91db3..98cb5ed5d0 100644
--- a/spec/generators/rspec/job/job_generator_spec.rb
+++ b/spec/generators/rspec/job/job_generator_spec.rb
@@ -8,23 +8,22 @@
   describe 'the generated files' do
     before { run_generator [file_name] }
 
+    subject(:job_spec) { file('spec/jobs/user_job_spec.rb') }
+
     context 'with file_name without job as suffix' do
       let(:file_name) { 'user' }
-      subject { file('spec/jobs/user_job_spec.rb') }
 
-      it { is_expected.to exist }
-      it { is_expected.to contain(/require 'rails_helper'/) }
-      it { is_expected.to contain(/describe UserJob, #{type_metatag(:job)}/) }
+      it 'creates the standard boiler plate' do
+        expect(job_spec).to contain(/require 'rails_helper'/).and(contain(/describe UserJob, #{type_metatag(:job)}/))
+      end
     end
 
     context 'with file_name with job as suffix' do
       let(:file_name) { 'user_job' }
 
-      subject { file('spec/jobs/user_job_spec.rb') }
-
-      it { is_expected.to exist }
-      it { is_expected.to contain(/require 'rails_helper'/) }
-      it { is_expected.to contain(/describe UserJob, #{type_metatag(:job)}/) }
+      it 'creates the standard boiler plate' do
+        expect(job_spec).to contain(/require 'rails_helper'/).and(contain(/describe UserJob, #{type_metatag(:job)}/))
+      end
     end
   end
 end
diff --git a/spec/generators/rspec/mailbox/mailbox_generator_spec.rb b/spec/generators/rspec/mailbox/mailbox_generator_spec.rb
index cee01ad39f..74e72d37fa 100644
--- a/spec/generators/rspec/mailbox/mailbox_generator_spec.rb
+++ b/spec/generators/rspec/mailbox/mailbox_generator_spec.rb
@@ -8,10 +8,12 @@
   describe 'the generated files' do
     before { run_generator %w[forwards] }
 
-    subject { file('spec/mailboxes/forwards_mailbox_spec.rb') }
+    subject(:mailbox_spec) { file('spec/mailboxes/forwards_mailbox_spec.rb') }
 
-    it { is_expected.to exist }
-    it { is_expected.to contain(/require 'rails_helper'/) }
-    it { is_expected.to contain(/describe ForwardsMailbox, #{type_metatag(:mailbox)}/) }
+    it 'generates the file' do
+      expect(
+        mailbox_spec
+      ).to contain(/require 'rails_helper'/).and contain(/describe ForwardsMailbox, #{type_metatag(:mailbox)}/)
+    end
   end
 end
diff --git a/spec/generators/rspec/mailer/mailer_generator_spec.rb b/spec/generators/rspec/mailer/mailer_generator_spec.rb
index 7c15e6184f..1dea0bc055 100644
--- a/spec/generators/rspec/mailer/mailer_generator_spec.rb
+++ b/spec/generators/rspec/mailer/mailer_generator_spec.rb
@@ -6,25 +6,36 @@
   setup_default_destination
 
   describe 'mailer spec' do
-    subject { file('spec/mailers/posts_spec.rb') }
+    subject(:filename) { file('spec/mailers/posts_spec.rb') }
+
     describe 'a spec is created for each action' do
       before do
         run_generator %w[posts index show]
       end
-      it { is_expected.to exist }
-      it { is_expected.to contain(/require "rails_helper"/) }
-      # Rails 5+ automatically appends Mailer to the provided constant so we do too
-      it { is_expected.to contain(/^RSpec.describe PostsMailer, #{type_metatag(:mailer)}/) }
-      it { is_expected.to contain(/describe "index" do/) }
-      it { is_expected.to contain(/describe "show" do/) }
+
+      it "includes the standard boilerplate" do
+        # Rails 5+ automatically appends Mailer to the provided constant so we do too
+        expect(
+          filename
+        ).to(
+          contain(/require "rails_helper"/)
+            .and(contain(/^RSpec.describe PostsMailer, #{type_metatag(:mailer)}/))
+            .and(contain(/describe "index" do/))
+            .and(contain(/describe "show" do/))
+        )
+      end
     end
+
     describe 'creates placeholder when no actions specified' do
       before do
         run_generator %w[posts]
       end
-      it { is_expected.to exist }
-      it { is_expected.to contain(/require "rails_helper"/) }
-      it { is_expected.to contain(/pending "add some examples to \(or delete\)/) }
+
+      it "includes the standard boilerplate" do
+        expect(
+          filename
+        ).to contain(/require "rails_helper"/).and(contain(/pending "add some examples to \(or delete\)/))
+      end
     end
   end
 
@@ -32,28 +43,41 @@
     before do
       run_generator %w[posts index show]
     end
+
     describe 'index' do
-      subject { file('spec/fixtures/posts/index') }
-      it { is_expected.to exist }
-      it { is_expected.to contain(/Posts#index/) }
+      subject(:filename) { file('spec/fixtures/posts/index') }
+
+      it "includes the standard boilerplate" do
+        expect(filename).to contain(/Posts#index/)
+      end
     end
+
     describe 'show' do
-      subject { file('spec/fixtures/posts/show') }
-      it { is_expected.to exist }
-      it { is_expected.to contain(/Posts#show/) }
+      subject(:filename) { file('spec/fixtures/posts/show') }
+
+      it "includes the standard boilerplate" do
+        expect(filename).to contain(/Posts#show/)
+      end
     end
   end
 
   describe 'a preview is generated for each action', skip: !RSpec::Rails::FeatureCheck.has_action_mailer_preview? do
-    subject { file('spec/mailers/previews/posts_preview.rb') }
     before do
       run_generator %w[posts index show]
     end
-    it { is_expected.to exist }
-    it { is_expected.to contain(/class PostsPreview < ActionMailer::Preview/) }
-    it { is_expected.to contain(/def index/) }
-    it { is_expected.to contain(/PostsMailer.index/) }
-    it { is_expected.to contain(/def show/) }
-    it { is_expected.to contain(/PostsMailer.show/) }
+
+    subject(:filename) { file('spec/mailers/previews/posts_preview.rb') }
+
+    it "includes the standard boilerplate" do
+      expect(
+        filename
+      ).to(
+        contain(/class PostsPreview < ActionMailer::Preview/)
+          .and(contain(/def index/))
+          .and(contain(/PostsMailer.index/))
+          .and(contain(/def show/))
+          .and(contain(/PostsMailer.show/))
+      )
+    end
   end
 end
diff --git a/spec/generators/rspec/model/model_generator_spec.rb b/spec/generators/rspec/model/model_generator_spec.rb
index 521170774a..5aacf721c4 100644
--- a/spec/generators/rspec/model/model_generator_spec.rb
+++ b/spec/generators/rspec/model/model_generator_spec.rb
@@ -22,9 +22,9 @@
       end
 
       describe 'the fixtures' do
-        subject { file('spec/fixtures/posts.yml') }
-
-        it { is_expected.not_to exist }
+        it "will skip the file" do
+          expect(File.exist?(file('spec/fixtures/posts.yml'))).to be false
+        end
       end
     end
   end
diff --git a/spec/generators/rspec/scaffold/scaffold_generator_spec.rb b/spec/generators/rspec/scaffold/scaffold_generator_spec.rb
index 4ca4c4f705..edbc239346 100644
--- a/spec/generators/rspec/scaffold/scaffold_generator_spec.rb
+++ b/spec/generators/rspec/scaffold/scaffold_generator_spec.rb
@@ -8,46 +8,70 @@
   setup_default_destination
 
   describe 'standard request specs' do
-    subject { file('spec/requests/posts_spec.rb') }
+    subject(:filename) { file('spec/requests/posts_spec.rb') }
 
     describe 'with no options' do
       before { run_generator %w[posts --request_specs] }
-      it { is_expected.to exist }
-      it { is_expected.to contain("require 'rails_helper'") }
-      it { is_expected.to contain(/^RSpec.describe "\/posts", #{type_metatag(:request)}/) }
-      it { is_expected.to contain('GET /new') }
-      it { is_expected.to contain(/"redirects to the created post"/) }
-      it { is_expected.to contain('get post_url(post)') }
-      it { is_expected.to contain('redirect_to(post_url(Post.last))') }
-      it { is_expected.to contain(/"redirects to the \w+ list"/) }
-
-      if ::Rails::VERSION::STRING >= '7.0.0'
-        it { is_expected.to contain(/renders a response with 422 status \(i.e. to display the 'new' template\)/) }
-        it { is_expected.to contain(/renders a response with 422 status \(i.e. to display the 'edit' template\)/) }
-      else
-        it { is_expected.to contain(/renders a successful response \(i.e. to display the 'new' template\)/) }
-        it { is_expected.to contain(/renders a successful response \(i.e. to display the 'edit' template\)/) }
+
+      it "includes the standard boilerplate" do
+        expect(
+          filename
+        ).to(
+          contain("require 'rails_helper'")
+            .and(contain(/^RSpec.describe "\/posts", #{type_metatag(:request)}/))
+            .and(contain('GET /new'))
+            .and(contain(/"redirects to the created post"/))
+            .and(contain('get post_url(post)'))
+            .and(contain('redirect_to(post_url(Post.last))'))
+            .and(contain(/"redirects to the \w+ list"/))
+        )
+
+        if ::Rails::VERSION::STRING >= '7.0.0'
+          expect(
+            filename
+          ).to(
+            contain(/renders a response with 422 status \(i.e. to display the 'new' template\)/)
+              .and(contain(/renders a response with 422 status \(i.e. to display the 'edit' template\)/))
+          )
+        else
+          expect(
+            filename
+          ).to(
+            contain(/renders a successful response \(i.e. to display the 'new' template\)/)
+              .and(contain(/renders a successful response \(i.e. to display the 'edit' template\)/))
+          )
+        end
       end
     end
 
     describe 'with --no-request_specs' do
       before { run_generator %w[posts --no-request_specs] }
-      it { is_expected.not_to exist }
+
+      it "is skipped" do
+        expect(File.exist?(filename)).to be false
+      end
     end
 
     describe 'with --api' do
       before { run_generator %w[posts --api] }
-      it { is_expected.to exist }
-      it { is_expected.to contain(/require 'rails_helper'/) }
-      it { is_expected.to contain(/^RSpec.describe "\/posts", #{type_metatag(:request)}/) }
-      it { is_expected.to contain('as: :json') }
-      it { is_expected.not_to contain('get new_posts_path') }
-      it { is_expected.not_to contain(/"redirects to\w+"/) }
-      it { is_expected.to contain('renders a JSON response with the new post') }
-      it { is_expected.to contain('renders a JSON response with errors for the new post') }
-      it { is_expected.not_to contain('get edit_posts_path') }
-      it { is_expected.to contain('renders a JSON response with the post') }
-      it { is_expected.to contain('renders a JSON response with errors for the post') }
+
+      it "includes the standard boilerplate" do
+        expect(
+          filename
+        ).to(
+          contain(/require 'rails_helper'/)
+            .and(contain(/^RSpec.describe "\/posts", #{type_metatag(:request)}/))
+            .and(contain('as: :json'))
+            .and(contain('renders a JSON response with the new post'))
+            .and(contain('renders a JSON response with errors for the new post'))
+            .and(contain('renders a JSON response with the post'))
+            .and(contain('renders a JSON response with errors for the post'))
+        )
+
+        expect(filename).not_to contain('get new_posts_path')
+        expect(filename).not_to contain(/"redirects to\w+"/)
+        expect(filename).not_to contain('get edit_posts_path')
+      end
     end
 
     describe 'in an engine' do
@@ -55,130 +79,168 @@
         in_sub_process do
           allow_any_instance_of(::Rails::Generators::NamedBase).to receive(:mountable_engine?).and_return(true)
           run_generator %w[posts --request_specs]
-          is_expected.to contain('Engine.routes.url_helpers')
+
+          expect(filename).to contain('Engine.routes.url_helpers')
         end
       end
     end
   end
 
   describe 'standard controller spec' do
-    subject { file('spec/controllers/posts_controller_spec.rb') }
+    subject(:filename) { file('spec/controllers/posts_controller_spec.rb') }
 
     describe 'with --controller_specs' do
       before { run_generator %w[posts --controller_specs] }
-      it { is_expected.to contain(/require 'rails_helper'/) }
-      it { is_expected.to contain(/^RSpec.describe PostsController, #{type_metatag(:controller)}/) }
-      it { is_expected.to contain(/GET #new/) }
-      it { is_expected.to contain(/"redirects to the created \w+"/) }
-      if ::Rails::VERSION::STRING >= '7.0.0'
-        it { is_expected.to contain(/renders a response with 422 status \(i.e. to display the 'new' template\)/) }
-      else
-        it { is_expected.to contain(/returns a success response \(i.e. to display the 'new' template\)/) }
-      end
-      it { is_expected.not_to contain(/"renders a JSON response with the new \w+"/) }
-      it { is_expected.not_to contain(/"renders a JSON response with errors for the new \w+"/) }
-
-      it { is_expected.to contain(/GET #edit/) }
-      it { is_expected.to contain(/"redirects to the \w+"/) }
-      if ::Rails::VERSION::STRING >= '7.0.0'
-        it { is_expected.to contain(/renders a response with 422 status \(i.e. to display the 'edit' template\)/) }
-      else
-        it { is_expected.to contain(/returns a success response \(i.e. to display the 'edit' template\)/) }
-      end
-      it { is_expected.not_to contain(/"renders a JSON response with the \w+"/) }
-      it { is_expected.not_to contain(/"renders a JSON response with errors for the \w+"/) }
-
-      it { is_expected.to contain(/"redirects to the \w+ list"/) }
+
+      it "includes the standard boilerplate" do
+        expect(
+          filename
+        ).to(
+          contain(/require 'rails_helper'/)
+            .and(contain(/^RSpec.describe PostsController, #{type_metatag(:controller)}/))
+            .and(contain(/GET #new/))
+            .and(contain(/"redirects to the created \w+"/))
+            .and(contain(/GET #edit/))
+            .and(contain(/"redirects to the \w+"/))
+            .and(contain(/"redirects to the \w+ list"/))
+        )
+
+        if ::Rails::VERSION::STRING >= '7.0.0'
+          expect(filename).to contain(/renders a response with 422 status \(i.e. to display the 'new' template\)/)
+                                .and(contain(/renders a response with 422 status \(i.e. to display the 'edit' template\)/))
+        else
+          expect(filename).to contain(/returns a success response \(i.e. to display the 'new' template\)/)
+                               .and(contain(/returns a success response \(i.e. to display the 'edit' template\)/))
+        end
+
+        expect(filename).not_to contain(/"renders a JSON response with the new \w+"/)
+        expect(filename).not_to contain(/"renders a JSON response with errors for the new \w+"/)
+        expect(filename).not_to contain(/"renders a JSON response with the \w+"/)
+        expect(filename).not_to contain(/"renders a JSON response with errors for the \w+"/)
+      end
     end
 
     describe 'with no options' do
       before { run_generator %w[posts] }
-      it { is_expected.not_to exist }
+
+      it 'skips the file' do
+        expect(File.exist?(filename)).to be false
+      end
     end
 
     describe 'with --api' do
       before { run_generator %w[posts --controller_specs --api] }
-      it { is_expected.to contain(/require 'rails_helper'/) }
-      it { is_expected.to contain(/^RSpec.describe PostsController, #{type_metatag(:controller)}/) }
-      it { is_expected.not_to contain(/GET #new/) }
-      it { is_expected.not_to contain(/"redirects to the created \w+"/) }
-      it { is_expected.not_to contain(/display the 'new' template/) }
-      it { is_expected.to contain(/"renders a JSON response with the new \w+"/) }
-      it { is_expected.to contain(/"renders a JSON response with errors for the new \w+"/) }
-      it { is_expected.not_to contain(/GET #edit/) }
-      it { is_expected.not_to contain(/"redirects to the \w+"/) }
-      it { is_expected.not_to contain(/display the 'edit' template/) }
-      it { is_expected.to contain(/"renders a JSON response with the \w+"/) }
-      it { is_expected.to contain(/"renders a JSON response with errors for the \w+"/) }
-
-      it { is_expected.not_to contain(/"redirects to the \w+ list"/) }
+
+      it "includes the standard boilerplate" do
+        expect(filename).to contain(/require 'rails_helper'/)
+                             .and(contain(/^RSpec.describe PostsController, #{type_metatag(:controller)}/))
+                             .and(contain(/"renders a JSON response with the new \w+"/))
+                             .and(contain(/"renders a JSON response with errors for the new \w+"/))
+                             .and(contain(/"renders a JSON response with the \w+"/))
+                             .and(contain(/"renders a JSON response with errors for the \w+"/))
+
+        expect(filename).not_to  contain(/GET #new/)
+        expect(filename).not_to  contain(/"redirects to the created \w+"/)
+        expect(filename).not_to  contain(/display the 'new' template/)
+        expect(filename).not_to  contain(/GET #edit/)
+        expect(filename).not_to  contain(/"redirects to the \w+"/)
+        expect(filename).not_to  contain(/display the 'edit' template/)
+        expect(filename).not_to  contain(/"redirects to the \w+ list"/)
+      end
     end
   end
 
   describe 'namespaced request spec' do
-    subject { file('spec/requests/admin/posts_spec.rb') }
+    subject(:filename) { file('spec/requests/admin/posts_spec.rb') }
 
     describe 'with default options' do
       before { run_generator %w[admin/posts] }
-      it { is_expected.to exist }
-      it { is_expected.to contain(/^RSpec.describe "\/admin\/posts", #{type_metatag(:request)}/) }
-      it { is_expected.to contain('post admin_posts_url, params: { admin_post: valid_attributes }') }
-      it { is_expected.to contain('admin_post_url(post)') }
-      it { is_expected.to contain('Admin::Post.create') }
+
+      it "includes the standard boilerplate" do
+        expect(filename).to contain(/^RSpec.describe "\/admin\/posts", #{type_metatag(:request)}/)
+                           .and(contain('post admin_posts_url, params: { admin_post: valid_attributes }'))
+                           .and(contain('admin_post_url(post)'))
+                           .and(contain('Admin::Post.create'))
+      end
     end
 
     describe 'with --model-name' do
       before { run_generator %w[admin/posts --model-name=post] }
-      it { is_expected.to contain('post admin_posts_url, params: { post: valid_attributes }') }
-      it { is_expected.not_to contain('params: { admin_post: valid_attributes }') }
-      it { is_expected.to contain(' Post.create') }
+
+      it "includes the standard boilerplate" do
+        expect(filename).to contain('post admin_posts_url, params: { post: valid_attributes }')
+                             .and(contain(' Post.create'))
+
+        expect(filename).not_to contain('params: { admin_post: valid_attributes }')
+      end
     end
 
     context 'with --api' do
       describe 'with default options' do
         before { run_generator %w[admin/posts --api] }
-        it { is_expected.to contain('params: { admin_post: valid_attributes }') }
-        it { is_expected.to contain('Admin::Post.create') }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain('params: { admin_post: valid_attributes }')
+                               .and(contain('Admin::Post.create'))
+        end
       end
 
       describe 'with --model-name' do
         before { run_generator %w[admin/posts --api --model-name=post] }
-        it { is_expected.to contain('params: { post: valid_attributes }') }
-        it { is_expected.not_to contain('params: { admin_post: valid_attributes }') }
-        it { is_expected.to contain(' Post.create') }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain('params: { post: valid_attributes }')
+                                .and(contain(' Post.create'))
+
+          expect(filename).not_to contain('params: { admin_post: valid_attributes }')
+        end
       end
     end
   end
 
   describe 'namespaced controller spec' do
-    subject { file('spec/controllers/admin/posts_controller_spec.rb') }
+    subject(:filename) { file('spec/controllers/admin/posts_controller_spec.rb') }
 
     describe 'with default options' do
       before { run_generator %w[admin/posts --controller_specs] }
-      it { is_expected.to contain(/^RSpec.describe Admin::PostsController, #{type_metatag(:controller)}/) }
-      it { is_expected.to contain('post :create, params: {admin_post: valid_attributes}') }
-      it { is_expected.to contain('Admin::Post.create') }
+
+      it "includes the standard boilerplate" do
+        expect(filename).to contain(/^RSpec.describe Admin::PostsController, #{type_metatag(:controller)}/)
+                             .and(contain('post :create, params: {admin_post: valid_attributes}'))
+                             .and(contain('Admin::Post.create'))
+      end
     end
 
     describe 'with --model-name' do
       before { run_generator %w[admin/posts --model-name=post --controller_specs] }
-      it { is_expected.to contain('post :create, params: {post: valid_attributes}') }
-      it { is_expected.not_to contain('params: {admin_post: valid_attributes}') }
-      it { is_expected.to contain(' Post.create') }
+
+      it "includes the standard boilerplate" do
+        expect(filename).to contain('post :create, params: {post: valid_attributes}')
+                              .and(contain(' Post.create'))
+
+        expect(filename).not_to contain('params: {admin_post: valid_attributes}')
+      end
     end
 
     context 'with --api' do
       describe 'with default options' do
         before { run_generator %w[admin/posts --api --controller_specs] }
-        it { is_expected.to contain('post :create, params: {admin_post: valid_attributes}') }
-        it { is_expected.to contain('Admin::Post.create') }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain('post :create, params: {admin_post: valid_attributes}')
+                                .and(contain('Admin::Post.create'))
+        end
       end
 
       describe 'with --model-name' do
         before { run_generator %w[admin/posts --api --model-name=post --controller_specs] }
-        it { is_expected.to contain('post :create, params: {post: valid_attributes}') }
-        it { is_expected.not_to contain('params: {admin_post: valid_attributes}') }
-        it { is_expected.to contain(' Post.create') }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain('post :create, params: {post: valid_attributes}')
+                               .and(contain(' Post.create'))
+
+          expect(filename).not_to contain('params: {admin_post: valid_attributes}')
+        end
       end
     end
   end
@@ -188,70 +250,89 @@
       before { run_generator %w[posts] }
 
       describe 'edit' do
-        subject { file("spec/views/posts/edit.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/require 'rails_helper'/) }
-        it { is_expected.to contain(/^RSpec.describe "(.*)\/edit", #{type_metatag(:view)}/) }
-        it { is_expected.to contain(/assign\(:post, post\)/) }
-        it { is_expected.to contain(/it "renders the edit (.*) form"/) }
+        subject(:filename) { file("spec/views/posts/edit.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/require 'rails_helper'/)
+                             .and(contain(/^RSpec.describe "(.*)\/edit", #{type_metatag(:view)}/))
+                             .and(contain(/assign\(:post, post\)/))
+                             .and(contain(/it "renders the edit (.*) form"/))
+        end
       end
 
       describe 'index' do
-        subject { file("spec/views/posts/index.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/require 'rails_helper'/) }
-        it { is_expected.to contain(/^RSpec.describe "(.*)\/index", #{type_metatag(:view)}/) }
-        it { is_expected.to contain(/assign\(:posts, /) }
-        it { is_expected.to contain(/it "renders a list of (.*)"/) }
+        subject(:filename) { file("spec/views/posts/index.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/require 'rails_helper'/)
+                             .and(contain(/^RSpec.describe "(.*)\/index", #{type_metatag(:view)}/))
+                             .and(contain(/assign\(:posts, /))
+                             .and(contain(/it "renders a list of (.*)"/))
+        end
       end
 
       describe 'new' do
-        subject { file("spec/views/posts/new.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/require 'rails_helper'/) }
-        it { is_expected.to contain(/^RSpec.describe "(.*)\/new", #{type_metatag(:view)}/) }
-        it { is_expected.to contain(/assign\(:post, /) }
-        it { is_expected.to contain(/it "renders new (.*) form"/) }
+        subject(:filename) { file("spec/views/posts/new.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/require 'rails_helper'/)
+                             .and(contain(/^RSpec.describe "(.*)\/new", #{type_metatag(:view)}/))
+                             .and(contain(/assign\(:post, /))
+                             .and(contain(/it "renders new (.*) form"/))
+        end
       end
 
       describe 'show' do
-        subject { file("spec/views/posts/show.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/require 'rails_helper'/) }
-        it { is_expected.to contain(/^RSpec.describe "(.*)\/show", #{type_metatag(:view)}/) }
-        it { is_expected.to contain(/assign\(:post, /) }
-        it { is_expected.to contain(/it "renders attributes in <p>"/) }
+        subject(:filename) { file("spec/views/posts/show.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/require 'rails_helper'/)
+                             .and(contain(/^RSpec.describe "(.*)\/show", #{type_metatag(:view)}/))
+                             .and(contain(/assign\(:post, /))
+                             .and(contain(/it "renders attributes in <p>"/))
+        end
       end
     end
 
     describe 'with multiple integer attributes index' do
       before { run_generator %w[posts upvotes:integer downvotes:integer] }
-      subject { file("spec/views/posts/index.html.erb_spec.rb") }
-      it { is_expected.to exist }
-      it { is_expected.to contain('assert_select cell_selector, text: Regexp.new(2.to_s), count: 2') }
-      it { is_expected.to contain('assert_select cell_selector, text: Regexp.new(3.to_s), count: 2') }
+      subject(:filename) { file("spec/views/posts/index.html.erb_spec.rb") }
+
+      it "includes the standard boilerplate" do
+        expect(filename).to contain('assert_select cell_selector, text: Regexp.new(2.to_s), count: 2')
+                           .and(contain('assert_select cell_selector, text: Regexp.new(3.to_s), count: 2'))
+      end
     end
 
     describe 'with multiple float attributes index' do
       before { run_generator %w[posts upvotes:float downvotes:float] }
-      subject { file("spec/views/posts/index.html.erb_spec.rb") }
-      it { is_expected.to exist }
-      it { is_expected.to contain('assert_select cell_selector, text: Regexp.new(2.5.to_s), count: 2') }
-      it { is_expected.to contain('assert_select cell_selector, text: Regexp.new(3.5.to_s), count: 2') }
+      subject(:filename) { file("spec/views/posts/index.html.erb_spec.rb") }
+
+      it "includes the standard boilerplate" do
+        expect(filename).to contain('assert_select cell_selector, text: Regexp.new(2.5.to_s), count: 2')
+                           .and(contain('assert_select cell_selector, text: Regexp.new(3.5.to_s), count: 2'))
+      end
     end
 
     describe 'with reference attribute' do
       before { run_generator %w[posts title:string author:references] }
+
       describe 'edit' do
-        subject { file("spec/views/posts/edit.html.erb_spec.rb") }
-        it { is_expected.to contain(/assert_select "input\[name=\?\]", "post\[author_id\]/) }
-        it { is_expected.to contain(/assert_select "input\[name=\?\]", "post\[title\]/) }
+        subject(:filename) { file("spec/views/posts/edit.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/assert_select "input\[name=\?\]", "post\[author_id\]/)
+                               .and(contain(/assert_select "input\[name=\?\]", "post\[title\]/))
+        end
       end
 
       describe 'new' do
-        subject { file("spec/views/posts/new.html.erb_spec.rb") }
-        it { is_expected.to contain(/assert_select "input\[name=\?\]", "post\[author_id\]"/) }
-        it { is_expected.to contain(/assert_select "input\[name=\?\]", "post\[title\]/) }
+        subject(:filename) { file("spec/views/posts/new.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/assert_select "input\[name=\?\]", "post\[author_id\]"/)
+                                .and(contain(/assert_select "input\[name=\?\]", "post\[title\]/))
+        end
       end
     end
 
@@ -259,27 +340,35 @@
       before { run_generator %w[admin/posts] }
 
       describe 'edit' do
-        subject { file("spec/views/admin/posts/edit.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/assign\(:admin_post, admin_post\)/) }
+        subject(:filename) { file("spec/views/admin/posts/edit.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/assign\(:admin_post, admin_post\)/)
+        end
       end
 
       describe 'index' do
-        subject { file("spec/views/admin/posts/index.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/assign\(:admin_posts, /) }
+        subject(:filename) { file("spec/views/admin/posts/index.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/assign\(:admin_posts, /)
+        end
       end
 
       describe 'new' do
-        subject { file("spec/views/admin/posts/new.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/assign\(:admin_post, /) }
+        subject(:filename) { file("spec/views/admin/posts/new.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/assign\(:admin_post, /)
+        end
       end
 
       describe 'show' do
-        subject { file("spec/views/admin/posts/show.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/assign\(:admin_post, /) }
+        subject(:filename) { file("spec/views/admin/posts/show.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/assign\(:admin_post, /)
+        end
       end
     end
 
@@ -287,50 +376,70 @@
       before { run_generator %w[admin/posts --model-name=Post] }
 
       describe 'edit' do
-        subject { file("spec/views/admin/posts/edit.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/assign\(:post, post\)/) }
+        subject(:filename) { file("spec/views/admin/posts/edit.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/assign\(:post, post\)/)
+        end
       end
 
       describe 'index' do
-        subject { file("spec/views/admin/posts/index.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/assign\(:posts, /) }
+        subject(:filename) { file("spec/views/admin/posts/index.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/assign\(:posts, /)
+        end
       end
 
       describe 'new' do
-        subject { file("spec/views/admin/posts/new.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/assign\(:post, /) }
+        subject(:filename) { file("spec/views/admin/posts/new.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/assign\(:post, /)
+        end
       end
 
       describe 'show' do
-        subject { file("spec/views/admin/posts/show.html.erb_spec.rb") }
-        it { is_expected.to exist }
-        it { is_expected.to contain(/assign\(:post, /) }
+        subject(:filename) { file("spec/views/admin/posts/show.html.erb_spec.rb") }
+
+        it "includes the standard boilerplate" do
+          expect(filename).to contain(/assign\(:post, /)
+        end
       end
     end
 
     describe 'with --no-template-engine' do
       before { run_generator %w[posts --no-template-engine] }
       describe 'edit' do
-        subject { file("spec/views/posts/edit.html._spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/edit.html._spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
 
       describe 'index' do
-        subject { file("spec/views/posts/index.html._spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/index.html._spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
 
       describe 'new' do
-        subject { file("spec/views/posts/new.html._spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/new.html._spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
 
       describe 'show' do
-        subject { file("spec/views/posts/show.html._spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/show.html._spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
     end
 
@@ -338,23 +447,35 @@
       before { run_generator %w[posts --api] }
 
       describe 'edit' do
-        subject { file("spec/views/posts/edit.html.erb_spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/edit.html.erb_spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
 
       describe 'index' do
-        subject { file("spec/views/posts/index.html.erb_spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/index.html.erb_spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
 
       describe 'new' do
-        subject { file("spec/views/posts/index.html.erb_spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/index.html.erb_spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
 
       describe 'show' do
-        subject { file("spec/views/posts/index.html.erb_spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/index.html.erb_spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
     end
 
@@ -362,58 +483,82 @@
       before { run_generator %w[posts --no-view-specs] }
 
       describe 'edit' do
-        subject { file("spec/views/posts/edit.html.erb_spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/edit.html.erb_spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
 
       describe 'index' do
-        subject { file("spec/views/posts/index.html.erb_spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/index.html.erb_spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
 
       describe 'new' do
-        subject { file("spec/views/posts/new.html.erb_spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/new.html.erb_spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
 
       describe 'show' do
-        subject { file("spec/views/posts/show.html.erb_spec.rb") }
-        it { is_expected.not_to exist }
+        subject(:filename) { file("spec/views/posts/show.html.erb_spec.rb") }
+
+        it "skips the file" do
+          expect(File.exist?(filename)).to be false
+        end
       end
     end
   end
 
   describe 'routing spec' do
-    subject { file('spec/routing/posts_routing_spec.rb') }
+    subject(:filename) { file('spec/routing/posts_routing_spec.rb') }
 
     describe 'with default options' do
       before { run_generator %w[posts] }
-      it { is_expected.to contain(/require "rails_helper"/) }
-      it { is_expected.to contain(/^RSpec.describe PostsController, #{type_metatag(:routing)}/) }
-      it { is_expected.to contain(/describe "routing"/) }
-      it { is_expected.to contain(/routes to #new/) }
-      it { is_expected.to contain(/routes to #edit/) }
-      it { is_expected.to contain('route_to("posts#new")') }
+
+      it 'includes the standard boilerplate' do
+        expect(filename).to contain(/require "rails_helper"/)
+                             .and(contain(/^RSpec.describe PostsController, #{type_metatag(:routing)}/))
+                             .and(contain(/describe "routing"/))
+                             .and(contain(/routes to #new/))
+                             .and(contain(/routes to #edit/))
+                             .and(contain('route_to("posts#new")'))
+      end
     end
 
     describe 'with --no-routing-specs' do
       before { run_generator %w[posts --no-routing_specs] }
-      it { is_expected.not_to exist }
+
+      it "skips the file" do
+        expect(File.exist?(filename)).to be false
+      end
     end
 
     describe 'with --api' do
       before { run_generator %w[posts --api] }
-      it { is_expected.not_to contain(/routes to #new/) }
-      it { is_expected.not_to contain(/routes to #edit/) }
+
+      it 'skips the right content' do
+        expect(filename).not_to contain(/routes to #new/)
+        expect(filename).not_to contain(/routes to #edit/)
+      end
     end
 
     context 'with a namespaced name' do
-      subject { file('spec/routing/api/v1/posts_routing_spec.rb') }
+      subject(:filename) { file('spec/routing/api/v1/posts_routing_spec.rb') }
 
       describe 'with default options' do
         before { run_generator %w[api/v1/posts] }
-        it { is_expected.to contain(/^RSpec.describe Api::V1::PostsController, #{type_metatag(:routing)}/) }
-        it { is_expected.to contain('route_to("api/v1/posts#new")') }
+
+        it 'includes the standard boilerplate' do
+          expect(filename).to contain(/^RSpec.describe Api::V1::PostsController, #{type_metatag(:routing)}/)
+                               .and(contain('route_to("api/v1/posts#new")'))
+        end
       end
     end
   end
diff --git a/spec/generators/rspec/system/system_generator_spec.rb b/spec/generators/rspec/system/system_generator_spec.rb
index 0d2fc35474..3aab0fb161 100644
--- a/spec/generators/rspec/system/system_generator_spec.rb
+++ b/spec/generators/rspec/system/system_generator_spec.rb
@@ -7,19 +7,15 @@
 
   describe "system specs" do
     subject(:system_spec) { file("spec/system/posts_spec.rb") }
+
     describe "are generated independently from the command line" do
       before do
         run_generator %w[posts]
       end
+
       describe "the spec" do
-        it "exists" do
-          expect(system_spec).to exist
-        end
-        it "contains 'rails_helper'" do
-          expect(system_spec).to contain(/require 'rails_helper'/)
-        end
-        it "contains the system" do
-          expect(system_spec).to contain(/^RSpec.describe "Posts", #{type_metatag(:system)}/)
+        it "contains the standard boilerplate" do
+          expect(system_spec).to contain(/require 'rails_helper'/).and(contain(/^RSpec.describe "Posts", #{type_metatag(:system)}/))
         end
       end
     end
@@ -28,9 +24,10 @@
       before do
         run_generator %w[posts --no-system-specs]
       end
+
       describe "the spec" do
         it "does not exist" do
-          expect(system_spec).to_not exist
+          expect(File.exist?(system_spec)).to be false
         end
       end
     end
diff --git a/spec/support/generators.rb b/spec/support/generators.rb
index f57dc2b885..3f87aec9ea 100644
--- a/spec/support/generators.rb
+++ b/spec/support/generators.rb
@@ -24,17 +24,19 @@ def self.included(klass)
           before { run_generator [name, '--fixture'] }
 
           describe 'the spec' do
-            subject { file("spec/models/#{name}_spec.rb") }
+            subject(:model_spec) { file("spec/models/#{name}_spec.rb") }
 
-            it { is_expected.to exist }
-            it { is_expected.to contain(/require 'rails_helper'/) }
-            it { is_expected.to contain(/^RSpec.describe #{class_name}, #{type_metatag(:model)}/) }
+            it 'contains the standard boilerplate' do
+              expect(model_spec).to contain(/require 'rails_helper'/).and(contain(/^RSpec.describe #{class_name}, #{type_metatag(:model)}/))
+            end
           end
 
           describe 'the fixtures' do
-            subject { file("spec/fixtures/#{name}.yml") }
+            subject(:filename) { file("spec/fixtures/#{name}.yml") }
 
-            it { is_expected.to contain(Regexp.new('# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html')) }
+            it 'contains the standard boilerplate' do
+              expect(filename).to contain(Regexp.new('# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html'))
+            end
           end
         end
 
@@ -47,7 +49,7 @@ def self.included(klass)
             subject(:request_spec) { file('spec/requests/posts_spec.rb') }
 
             it "does not create the request spec" do
-              expect(request_spec).not_to exist
+              expect(File.exist?(request_spec)).to be false
             end
           end
 
@@ -62,27 +64,11 @@ def self.included(klass)
               let(:name) { %w[posts] }
               let(:spec_file_name) { 'spec/requests/posts_spec.rb' }
 
-              it "creates the request spec" do
-                expect(request_spec).to exist
-              end
-
-              it "the generator requires 'rails_helper'" do
+              it 'contains the standard boilerplate' do
                 expect(request_spec).to contain(/require 'rails_helper'/)
-              end
-
-              it "the generator describes the provided NAME without monkey " \
-                 "patching setting the type to `:request`" do
-                   expect(request_spec).to contain(
-                     /^RSpec.describe "Posts", #{type_metatag(:request)}/
-                   )
-                 end
-
-              it "the generator includes a sample GET request" do
-                expect(request_spec).to contain(/describe "GET \/posts"/)
-              end
-
-              it "the generator sends the GET request to the index path" do
-                expect(request_spec).to contain(/get posts_index_path/)
+                                          .and(contain(/^RSpec.describe "Posts", #{type_metatag(:request)}/))
+                                          .and(contain(/describe "GET \/posts"/))
+                                          .and(contain(/get posts_index_path/))
               end
             end
 
@@ -90,27 +76,11 @@ def self.included(klass)
               let(:name) { %w[api/posts] }
               let(:spec_file_name) { 'spec/requests/api/posts_spec.rb' }
 
-              it "creates the request spec" do
-                expect(request_spec).to exist
-              end
-
-              it "the generator requires 'rails_helper'" do
+              it 'contains the standard boilerplate' do
                 expect(request_spec).to contain(/require 'rails_helper'/)
-              end
-
-              it "the generator describes the provided NAME without monkey " \
-                 "patching setting the type to `:request`" do
-                   expect(request_spec).to contain(
-                     /^RSpec.describe "Api::Posts", #{type_metatag(:request)}/
-                   )
-                 end
-
-              it "the generator includes a sample GET request" do
-                expect(request_spec).to contain(/describe "GET \/api\/posts"/)
-              end
-
-              it "the generator sends the GET request to the index path" do
-                expect(request_spec).to contain(/get api_posts_index_path\n/)
+                                          .and(contain(/^RSpec.describe "Api::Posts", #{type_metatag(:request)}/))
+                                          .and(contain(/describe "GET \/api\/posts"/))
+                                          .and(contain(/get api_posts_index_path\n/))
               end
             end
           end