1 files changed, 8 insertions, 12 deletions
diff --git a/spec/rubocop/cop/migration/refer_to_index_by_name_spec.rb b/spec/rubocop/cop/migration/refer_to_index_by_name_spec.rb
index a25328a56a8..864d2325d53 100644
--- a/spec/rubocop/cop/migration/refer_to_index_by_name_spec.rb
+++ b/spec/rubocop/cop/migration/refer_to_index_by_name_spec.rb
@@ -5,18 +5,16 @@ require 'rubocop'
 require_relative '../../../../rubocop/cop/migration/refer_to_index_by_name'
 
 RSpec.describe RuboCop::Cop::Migration::ReferToIndexByName do
-  include CopHelper
-
   subject(:cop) { described_class.new }
 
-  context 'in migration' do
+  context 'when in migration' do
     before do
       allow(cop).to receive(:in_migration?).and_return(true)
     end
 
     context 'when existing indexes are referred to without an explicit name' do
       it 'registers an offense' do
-        expect_offense(<<~RUBY)
+        expect_offense(<<~RUBY, msg: 'migration methods that refer to existing indexes must do so by name')
           class TestReferToIndexByName < ActiveRecord::Migration[6.0]
             DOWNTIME = false
 
@@ -30,22 +28,22 @@ RSpec.describe RuboCop::Cop::Migration::ReferToIndexByName do
               end
 
               if index_exists? :test_indexes, :column2
-                 ^^^^^^^^^^^^^ #{described_class::MSG}
+                 ^^^^^^^^^^^^^ %{msg}
                 remove_index :test_indexes, :column2
-                ^^^^^^^^^^^^ #{described_class::MSG}
+                ^^^^^^^^^^^^ %{msg}
               end
 
               remove_index :test_indexes, column: column3
-              ^^^^^^^^^^^^ #{described_class::MSG}
+              ^^^^^^^^^^^^ %{msg}
 
               remove_index :test_indexes, name: 'index_name_4'
             end
 
             def down
               if index_exists? :test_indexes, :column4, using: :gin, opclass: :gin_trgm_ops
-                 ^^^^^^^^^^^^^ #{described_class::MSG}
+                 ^^^^^^^^^^^^^ %{msg}
                 remove_concurrent_index :test_indexes, :column4, using: :gin, opclass: :gin_trgm_ops
-                ^^^^^^^^^^^^^^^^^^^^^^^ #{described_class::MSG}
+                ^^^^^^^^^^^^^^^^^^^^^^^ %{msg}
               end
 
               if index_exists? :test_indexes, :column3, unique: true, name: 'index_name_3', where: 'column3 = 10'
@@ -54,13 +52,11 @@ RSpec.describe RuboCop::Cop::Migration::ReferToIndexByName do
             end
           end
         RUBY
-
-        expect(cop.offenses.map(&:cop_name)).to all(eq("Migration/#{described_class.name.demodulize}"))
       end
     end
   end
 
-  context 'outside migration' do
+  context 'when outside migration' do
     before do
       allow(cop).to receive(:in_migration?).and_return(false)
     end