environment.rb

# Load the rails application                                                                                                                                                                                                                                                               
require File.expand_path('../application', __FILE__)                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                                                                           
# Initialize the rails application                                                                                                                                                                                                                                                         
Adms::Application.initialize!                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                                           
if defined?(ActiveRecord::ConnectionAdapters::Mysql2Adapter)                                                                                                                                                                                                                               
  ActiveRecord::ConnectionAdapters::Mysql2Adapter.class_eval do                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                                           
    class ActiveRecord::ConnectionAdapters::Mysql2Adapter                                                                                                                                                                                                                                  
      if method_defined?(:connect)                                                                                                                                                                                                                                                         
        alias_method :connect_no_sql_mode, :connect                                                                                                                                                                                                                                        
      end                                                                                                                                                                                                                                                                                  
      def connect                                                                                                                                                                                                                                                                          
        connect_no_sql_mode                                                                                                                                                                                                                                                                
        puts "Setting sql_mode..."                                                                                                                                                                                                                                                         
        execute("SET sql_mode = 'NO_AUTO_VALUE_ON_ZERO,STRICT_ALL_TABLES'")                                                                                                                                                                                                                
      end                                                                                                                                                                                                                                                                                  
    end                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                                           
    ActiveRecord::Base.connection.reconnect!                                                                                                                                                                                                                                               
  end                                                                                                                                                                                                                                                                                      
end

output

(13:51:48):cmyers@cmyers-ubuntu:3 fix-bugs-in-event-tests¹] RAILS_ENV="test" bundle exec rails c
/home/cmyers/gitrepos/adms/config/environment.rb:15:in `connect': undefined local variable or method `connect_no_sql_mode' for #<ActiveRecord::ConnectionAdapters::Mysql2Adapter:0x000000037e55b0> (NameError)
        from /home/cmyers/.rvm/gems/ruby-1.9.2-p320@adms/gems/activerecord-3.2.9/lib/active_record/connection_adapters/mysql2_adapter.rb:78:in `reconnect!'
        from /home/cmyers/gitrepos/adms/config/environment.rb:21:in `block in <top (required)>'
        from /home/cmyers/gitrepos/adms/config/environment.rb:8:in `class_eval'
        from /home/cmyers/gitrepos/adms/config/environment.rb:8:in `<top (required)>'
        from /home/cmyers/.rvm/gems/ruby-1.9.2-p320@adms/gems/railties-3.2.9/lib/rails/application.rb:103:in `require'
        from /home/cmyers/.rvm/gems/ruby-1.9.2-p320@adms/gems/railties-3.2.9/lib/rails/application.rb:103:in `require_environment!'
        from /home/cmyers/.rvm/gems/ruby-1.9.2-p320@adms/gems/railties-3.2.9/lib/rails/commands.rb:40:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'
RAILS_ENV="test" bundle exec rails c  5.12s user 0.64s system 99% cpu 5.780 total

Trying to override ActiveRecord::ConnectionAdapters::Mysql2Adapter.connect

But... it isn't always available. So sometimes, I get the above error. I presume I need to wrap it in an if responds_to? or something but I have no clue. Halp?