Add more information in variable_duplicates validator error message

app/validators/variable_duplicates_validator.rb

@@ -20,7 +20,9 @@ class VariableDuplicatesValidator < ActiveModel::EachValidator
   def validate_duplicates(record, attribute, values)
     duplicates = values.reject(&:marked_for_destruction?).group_by(&:key).select { |_, v| v.many? }.map(&:first)
     if duplicates.any?
-      record.errors.add(attribute, "Duplicate variables: #{duplicates.join(", ")}")
+      error_message = "has duplicate variables (#{duplicates.join(", ")})"
+      error_message += " in #{options[:scope]} scope" if options[:scope]
+      record.errors.add(attribute, error_message)
     end
   end
 end

spec/support/features/variable_list_shared_examples.rb

@@ -263,7 +263,7 @@ shared_examples 'variable list' do
     # We check the first row because it re-sorts to alphabetical order on refresh
     page.within('.js-ci-variable-list-section') do
-      expect(find('.js-ci-variable-error-box')).to have_content('Validation failed Variables Duplicate variables: samekey')
+      expect(find('.js-ci-variable-error-box')).to have_content(/Validation failed Variables has duplicate variables \(.+\)/)
     end
   end
 end

spec/validators/variable_duplicates_validator_spec.rb

@@ -30,7 +30,7 @@ describe VariableDuplicatesValidator do
         it 'has a duplicate key error' do
           subject
-          expect(project.errors[:variables]).to include("Duplicate variables: #{project.variables.last.key}")
+          expect(project.errors).to have_key(:variables)
         end
       end
     end
@@ -59,7 +59,7 @@ describe VariableDuplicatesValidator do
         it 'has a duplicate key error' do
           subject
-          expect(project.errors[:variables]).to include("Duplicate variables: #{project.variables.last.key}")
+          expect(project.errors).to have_key(:variables)
         end
       end
     end