Enable RSpec/NotToNot cop and auto-correct offenses

Also removes the note from the development/testing.md guide

.rubocop.yml

@@ -1130,7 +1130,7 @@ RSpec/MultipleDescribes:
 # Enforces the usage of the same method on all negative message expectations.
 RSpec/NotToNot:
   EnforcedStyle: not_to
-  Enabled: false
+  Enabled: true
 # Prefer using verifying doubles over normal doubles.
 RSpec/VerifiedDoubles:

doc/development/testing.md

@@ -65,7 +65,7 @@ the command line via `bundle exec teaspoon`, or via a web browser at
 - Use `context` to test branching logic.
 - Don't `describe` symbols (see [Gotchas](gotchas.md#dont-describe-symbols)).
 - Don't supply the `:each` argument to hooks since it's the default.
-- Prefer `not_to` to `to_not`.
+- Prefer `not_to` to `to_not` (_this is enforced by Rubocop_).
 - Try to match the ordering of tests to the ordering within the class.
 - Try to follow the [Four-Phase Test][four-phase-test] pattern, using newlines
   to separate phases.

features/steps/admin/users.rb

@@ -158,7 +158,7 @@ class Spinach::Features::AdminUsers < Spinach::FeatureSteps
   step 'I should not see twitter details' do
     expect(page).to have_content 'Pete'
-    expect(page).to_not have_content 'twitter'
+    expect(page).not_to have_content 'twitter'
   end
   step 'click on ssh keys tab' do

features/steps/dashboard/todos.rb

@@ -106,7 +106,7 @@ class Spinach::Features::DashboardTodos < Spinach::FeatureSteps
       if pending
         expect(page).to have_link 'Done'
       else
-        expect(page).to_not have_link 'Done'
+        expect(page).not_to have_link 'Done'
       end
     end
   end

features/steps/project/commits/commits.rb

@@ -105,7 +105,7 @@ class Spinach::Features::ProjectCommits < Spinach::FeatureSteps
   end
   step 'I should not see button to create a new merge request' do
-    expect(page).to_not have_link 'Create Merge Request'
+    expect(page).not_to have_link 'Create Merge Request'
   end
   step 'I should see button to the merge request' do

features/steps/project/issues/award_emoji.rb

@@ -39,8 +39,8 @@ class Spinach::Features::AwardEmoji < Spinach::FeatureSteps
   step 'I can see the activity and food categories' do
     page.within '.emoji-menu' do
-      expect(page).to_not have_selector 'Activity'
-      expect(page).to_not have_selector 'Food'
+      expect(page).not_to have_selector 'Activity'
+      expect(page).not_to have_selector 'Food'
     end
   end

features/steps/project/issues/issues.rb

@@ -216,7 +216,7 @@ class Spinach::Features::ProjectIssues < Spinach::FeatureSteps
       page.within 'li.issue:nth-child(3)' do
         expect(page).to have_content 'Bugfix'
-        expect(page).to_not have_content '0 0'
+        expect(page).not_to have_content '0 0'
       end
     end
   end
@@ -235,7 +235,7 @@ class Spinach::Features::ProjectIssues < Spinach::FeatureSteps
       page.within 'li.issue:nth-child(3)' do
         expect(page).to have_content 'Bugfix'
-        expect(page).to_not have_content '0 0'
+        expect(page).not_to have_content '0 0'
       end
     end
   end

features/steps/project/merge_requests.rb

@@ -203,7 +203,7 @@ class Spinach::Features::ProjectMergeRequests < Spinach::FeatureSteps
       page.within 'li.merge-request:nth-child(3)' do
         expect(page).to have_content 'Bug NS-05'
-        expect(page).to_not have_content '0 0'
+        expect(page).not_to have_content '0 0'
       end
     end
   end
@@ -222,7 +222,7 @@ class Spinach::Features::ProjectMergeRequests < Spinach::FeatureSteps
       page.within 'li.merge-request:nth-child(3)' do
         expect(page).to have_content 'Bug NS-05'
-        expect(page).to_not have_content '0 0'
+        expect(page).not_to have_content '0 0'
       end
     end
   end

features/steps/shared/note.rb

@@ -107,7 +107,7 @@ module SharedNote
   end
   step 'I should see no notes at all' do
-    expect(page).to_not have_css('.note')
+    expect(page).not_to have_css('.note')
   end
   # Markdown

spec/controllers/admin/projects_controller_spec.rb

@@ -17,7 +17,7 @@ describe Admin::ProjectsController do
     it 'does not retrieve the project' do
       get :index, visibility_levels: [Gitlab::VisibilityLevel::INTERNAL]
-      expect(response.body).to_not match(project.name)
+      expect(response.body).not_to match(project.name)
     end
   end
 end

spec/controllers/projects/compare_controller_spec.rb

@@ -19,7 +19,7 @@ describe Projects::CompareController do
         to: ref_to)
     expect(response).to be_success
-    expect(assigns(:diffs).first).to_not be_nil
+    expect(assigns(:diffs).first).not_to be_nil
     expect(assigns(:commits).length).to be >= 1
   end
@@ -32,7 +32,7 @@ describe Projects::CompareController do
         w: 1)
     expect(response).to be_success
-    expect(assigns(:diffs).first).to_not be_nil
+    expect(assigns(:diffs).first).not_to be_nil
     expect(assigns(:commits).length).to be >= 1
     # without whitespace option, there are more than 2 diff_splits
     diff_splits = assigns(:diffs).first.diff.split("\n")

spec/controllers/projects/group_links_controller_spec.rb

@@ -43,7 +43,7 @@ describe Projects::GroupLinksController do
       end
       it 'does not share project with that group' do
-        expect(group.shared_projects).to_not include project
+        expect(group.shared_projects).not_to include project
       end
     end
   end

spec/controllers/projects/issues_controller_spec.rb

@@ -56,7 +56,7 @@ describe Projects::IssuesController do
           move_issue
           expect(response).to have_http_status :found
-          expect(another_project.issues).to_not be_empty
+          expect(another_project.issues).not_to be_empty
         end
       end

spec/controllers/projects/project_members_controller_spec.rb

@@ -38,7 +38,7 @@ describe Projects::ProjectMembersController do
       include_context 'import applied'
       it 'does not import team members' do
-        expect(project.team_members).to_not include member
+        expect(project.team_members).not_to include member
       end
       it 'responds with not found' do

spec/controllers/registrations_controller_spec.rb

@@ -16,7 +16,7 @@ describe RegistrationsController do
       it 'logs user in directly' do
         post(:create, user_params)
         expect(ActionMailer::Base.deliveries.last).to be_nil
-        expect(subject.current_user).to_not be_nil
+        expect(subject.current_user).not_to be_nil
       end
     end

spec/controllers/sessions_controller_spec.rb

@@ -47,7 +47,7 @@ describe SessionsController do
               authenticate_2fa(login: another_user.username,
                                otp_attempt: another_user.current_otp)
-              expect(subject.current_user).to_not eq another_user
+              expect(subject.current_user).not_to eq another_user
             end
           end
@@ -56,7 +56,7 @@ describe SessionsController do
               authenticate_2fa(login: another_user.username,
                                otp_attempt: 'invalid')
-              expect(subject.current_user).to_not eq another_user
+              expect(subject.current_user).not_to eq another_user
             end
           end
@@ -73,7 +73,7 @@ describe SessionsController do
               before { authenticate_2fa(otp_attempt: 'invalid') }
               it 'does not authenticate' do
-                expect(subject.current_user).to_not eq user
+                expect(subject.current_user).not_to eq user
               end
               it 'warns about invalid OTP code' do

spec/factories_spec.rb

@@ -6,7 +6,7 @@ describe 'factories' do
       let(:entity) { build(factory.name) }
       it 'does not raise error when created' do
-        expect { entity }.to_not raise_error
+        expect { entity }.not_to raise_error
       end
       it 'should be valid', if: factory.build_class < ActiveRecord::Base do

spec/features/admin/admin_runners_spec.rb

@@ -79,7 +79,7 @@ describe "Admin Runners" do
       end
       it 'changes registration token' do
-        expect(page_token).to_not eq token
+        expect(page_token).not_to eq token
       end
     end
   end

spec/features/admin/admin_users_spec.rb

@@ -152,7 +152,7 @@ describe "Admin::Users", feature: true  do
         it 'sees impersonation log out icon' do
           icon = first('.fa.fa-user-secret')
-          expect(icon).to_not eql nil
+          expect(icon).not_to eql nil
         end
         it 'can log out of impersonated user back to original user' do

spec/features/builds_spec.rb

@@ -47,7 +47,7 @@ describe "Builds" do
       it { expect(page).to have_content @build.short_sha }
       it { expect(page).to have_content @build.ref }
       it { expect(page).to have_content @build.name }
-      it { expect(page).to_not have_link 'Cancel running' }
+      it { expect(page).not_to have_link 'Cancel running' }
     end
   end
@@ -63,7 +63,7 @@ describe "Builds" do
     it { expect(page).to have_content @build.short_sha }
     it { expect(page).to have_content @build.ref }
     it { expect(page).to have_content @build.name }
-    it { expect(page).to_not have_link 'Cancel running' }
+    it { expect(page).not_to have_link 'Cancel running' }
   end
   describe "GET /:project/builds/:id" do