Fix `RSpec/SubjectDeclaration` cop (#25312)

.rubocop_todo.yml

@@ -409,29 +409,6 @@ RSpec/StubbedMock:
     - 'spec/lib/webfinger_resource_spec.rb'
     - 'spec/services/activitypub/process_collection_service_spec.rb'
 
-RSpec/SubjectDeclaration:
-  Exclude:
-    - 'spec/controllers/admin/domain_blocks_controller_spec.rb'
-    - 'spec/models/account_migration_spec.rb'
-    - 'spec/models/account_spec.rb'
-    - 'spec/models/relationship_filter_spec.rb'
-    - 'spec/models/user_role_spec.rb'
-    - 'spec/policies/account_moderation_note_policy_spec.rb'
-    - 'spec/policies/account_policy_spec.rb'
-    - 'spec/policies/backup_policy_spec.rb'
-    - 'spec/policies/custom_emoji_policy_spec.rb'
-    - 'spec/policies/domain_block_policy_spec.rb'
-    - 'spec/policies/email_domain_block_policy_spec.rb'
-    - 'spec/policies/instance_policy_spec.rb'
-    - 'spec/policies/invite_policy_spec.rb'
-    - 'spec/policies/relay_policy_spec.rb'
-    - 'spec/policies/report_note_policy_spec.rb'
-    - 'spec/policies/report_policy_spec.rb'
-    - 'spec/policies/settings_policy_spec.rb'
-    - 'spec/policies/tag_policy_spec.rb'
-    - 'spec/policies/user_policy_spec.rb'
-    - 'spec/services/activitypub/process_account_service_spec.rb'
-
 RSpec/SubjectStub:
   Exclude:
     - 'spec/services/unallow_domain_service_spec.rb'

spec/controllers/admin/domain_blocks_controller_spec.rb

@@ -166,10 +166,11 @@ RSpec.describe Admin::DomainBlocksController do
   end
 
   describe 'PUT #update' do
-    let!(:remote_account) { Fabricate(:account, domain: 'example.com') }
+    subject do
-    let(:subject) do
       post :update, params: { :id => domain_block.id, :domain_block => { domain: 'example.com', severity: new_severity }, 'confirm' => '' }
     end
+
+    let!(:remote_account) { Fabricate(:account, domain: 'example.com') }
     let(:domain_block) { Fabricate(:domain_block, domain: 'example.com', severity: original_severity) }
 
     before do

spec/models/account_migration_spec.rb

@@ -4,11 +4,11 @@ require 'rails_helper'
 
 RSpec.describe AccountMigration do
   describe 'validations' do
+    subject { described_class.new(account: source_account, acct: target_acct) }
+
     let(:source_account) { Fabricate(:account) }
     let(:target_acct)    { target_account.acct }
 
-    let(:subject) { described_class.new(account: source_account, acct: target_acct) }
-
     context 'with valid properties' do
       let(:target_account) { Fabricate(:account, username: 'target', domain: 'remote.org') }
 

spec/models/account_spec.rb

@@ -20,7 +20,9 @@ RSpec.describe Account do
       end
 
       context 'when the account is of a local user' do
-        let!(:subject) { Fabricate(:user, email: 'foo+bar@domain.org').account }
+        subject { local_user_account }
+
+        let!(:local_user_account) { Fabricate(:user, email: 'foo+bar@domain.org').account }
 
         it 'creates a canonical domain block' do
           subject.suspend!

spec/models/relationship_filter_spec.rb

@@ -7,7 +7,7 @@ describe RelationshipFilter do
 
   describe '#results' do
     context 'when default params are used' do
-      let(:subject) do
+      subject do
         described_class.new(account, 'order' => 'active').results
       end
 

spec/models/user_role_spec.rb

@@ -93,7 +93,7 @@ RSpec.describe UserRole do
 
   describe '#computed_permissions' do
     context 'when the role is nobody' do
-      let(:subject) { described_class.nobody }
+      subject { described_class.nobody }
 
       it 'returns none' do
         expect(subject.computed_permissions).to eq UserRole::Flags::NONE
@@ -101,7 +101,7 @@ RSpec.describe UserRole do
     end
 
     context 'when the role is everyone' do
-      let(:subject) { described_class.everyone }
+      subject { described_class.everyone }
 
       it 'returns permissions' do
         expect(subject.computed_permissions).to eq subject.permissions

spec/policies/account_moderation_note_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe AccountModerationNotePolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/policies/account_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe AccountPolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
   let(:alice)   { Fabricate(:account) }

spec/policies/backup_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe BackupPolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:john) { Fabricate(:account) }
 
   permissions :create? do

spec/policies/custom_emoji_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe CustomEmojiPolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/policies/domain_block_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe DomainBlockPolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/policies/email_domain_block_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe EmailDomainBlockPolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/policies/instance_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe InstancePolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/policies/invite_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe InvitePolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:user).account }
 

spec/policies/relay_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe RelayPolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/policies/report_note_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe ReportNotePolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/policies/report_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe ReportPolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/policies/settings_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe SettingsPolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/policies/tag_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe TagPolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/policies/user_policy_spec.rb

@@ -4,7 +4,8 @@ require 'rails_helper'
 require 'pundit/rspec'
 
 RSpec.describe UserPolicy do
-  let(:subject) { described_class }
+  subject { described_class }
+
   let(:admin)   { Fabricate(:user, role: UserRole.find_by(name: 'Admin')).account }
   let(:john)    { Fabricate(:account) }
 

spec/services/activitypub/process_account_service_spec.rb

@@ -113,11 +113,7 @@ RSpec.describe ActivityPub::ProcessAccountService, type: :service do
   end
 
   context 'when discovering many subdomains in a short timeframe' do
-    before do
+    subject do
-      stub_const 'ActivityPub::ProcessAccountService::SUBDOMAINS_RATELIMIT', 5
-    end
-
-    let(:subject) do
       8.times do |i|
         domain = "test#{i}.testdomain.com"
         json = {
@@ -129,6 +125,10 @@ RSpec.describe ActivityPub::ProcessAccountService, type: :service do
       end
     end
 
+    before do
+      stub_const 'ActivityPub::ProcessAccountService::SUBDOMAINS_RATELIMIT', 5
+    end
+
     it 'creates at least some accounts' do
       expect { subject }.to change { Account.remote.count }.by_at_least(2)
     end