HaveSecureTokenMatcher: optional argument to ignore db index check

lib/shoulda/matchers/active_record/have_secure_token_matcher.rb

@@ -30,17 +30,18 @@ module ActiveRecord
       #
 
       # rubocop:disable Style/PredicateName
-      def have_secure_token(token_attribute = :token)
-        HaveSecureTokenMatcher.new(token_attribute)
+      def have_secure_token(token_attribute = :token, options = {})
+        HaveSecureTokenMatcher.new(token_attribute, options)
       end
       # rubocop:enable Style/PredicateName
 
       # @private
       class HaveSecureTokenMatcher
         attr_reader :token_attribute
 
-        def initialize(token_attribute)
+        def initialize(token_attribute, options = {})
           @token_attribute = token_attribute
+          @ignore_check_for_db_index = options[:ignore_check_for_db_index]
         end
 
         def description
@@ -75,7 +76,7 @@ def run_checks
           if !has_expected_db_column?
             @errors << "missing correct column #{token_attribute}:string"
           end
-          if !has_expected_db_index?
+          if !@ignore_check_for_db_index && !has_expected_db_index?
             @errors << "missing unique index for #{table_and_column}"
           end
           @errors

spec/unit/shoulda/matchers/active_record/have_secure_token_matcher_spec.rb

@@ -58,6 +58,16 @@
       end
     end
 
+    it 'matches when missing a db index but ignore_check_for_db_index is true' do
+      create_table(:users) do |t|
+        t.string :token
+      end
+
+      valid_model = define_model_class(:User) { has_secure_token }
+      expect(valid_model.new).
+        to have_secure_token(:token, ignore_check_for_db_index: true)
+    end
+
     it 'does not match when missing a token column' do
       create_table(:users)
       invalid_model = define_model_class(:User) { has_secure_token }