require "cases/helper" require 'models/topic' module ActiveRecord class PredicateBuilderTest < ActiveRecord::TestCase def test_registering_new_handlers PredicateBuilder.register_handler(Regexp, proc do |column, value| Arel::Nodes::InfixOperation.new('~', column, value.source) end) assert_match %r{["`]topics["`].["`]title["`] ~ 'rails'}i, Topic.where(title: /rails/).to_sql end end end