Fix leaky constant in admin mode migration spec

.rubocop.yml

@@ -355,7 +355,6 @@ RSpec/LeakyConstantDeclaration:
     - 'spec/lib/gitlab/quick_actions/dsl_spec.rb'
     - 'spec/lib/marginalia_spec.rb'
     - 'spec/mailers/notify_spec.rb'
-    - 'spec/migrations/20191125114345_add_admin_mode_protected_path_spec.rb'
     - 'spec/models/concerns/batch_destroy_dependent_associations_spec.rb'
     - 'spec/models/concerns/bulk_insert_safe_spec.rb'
     - 'spec/models/concerns/bulk_insertable_associations_spec.rb'

changelogs/unreleased/leaky-constant-fix-22.yml

+---
+title: Fix leaky constant issue in admin mode migration spec
+merge_request: 32074
+author: Rajendra Kadam
+type: fixed

spec/migrations/20191125114345_add_admin_mode_protected_path_spec.rb

@@ -4,10 +4,9 @@ require 'spec_helper'
 require Rails.root.join('db', 'migrate', '20191125114345_add_admin_mode_protected_path.rb')
 
 describe AddAdminModeProtectedPath do
-  ADMIN_MODE_ENDPOINT = '/admin/session'
-
   subject(:migration) { described_class.new }
 
+  let(:admin_mode_endpoint) { '/admin/session' }
   let(:application_settings) { table(:application_settings) }
 
   context 'no settings available' do
@@ -30,7 +29,7 @@ describe AddAdminModeProtectedPath do
     application_settings.create!(protected_paths: '{a,b,c}')
 
     protected_paths_before = %w[a b c]
-    protected_paths_after = protected_paths_before.dup << ADMIN_MODE_ENDPOINT
+    protected_paths_after = protected_paths_before.dup << admin_mode_endpoint
 
     expect { migrate! }.to change { application_settings.first.protected_paths }.from(protected_paths_before).to(protected_paths_after)
   end
@@ -38,13 +37,13 @@ describe AddAdminModeProtectedPath do
   it 'new default includes admin mode endpoint' do
     settings_before = application_settings.create!
 
-    expect(settings_before.protected_paths).not_to include(ADMIN_MODE_ENDPOINT)
+    expect(settings_before.protected_paths).not_to include(admin_mode_endpoint)
 
     migrate!
 
     application_settings.reset_column_information
     settings_after = application_settings.create!
 
-    expect(settings_after.protected_paths).to include(ADMIN_MODE_ENDPOINT)
+    expect(settings_after.protected_paths).to include(admin_mode_endpoint)
   end
 end