require File.join(File.dirname(__FILE__), '..', '..', '..', 'spec_helper')

module Arel
  describe In do
    before do
      @relation = Table.new(:users)
      @attribute = @relation[:id]
    end
  
    describe '#to_sql' do 
      describe 'when relating to an array' do
        describe 'when the array\'s elements are the same type as the attribute' do
          before do
            @array = [1, 2, 3]
          end
          
          it 'manufactures sql with a comma separated list' do
            In.new(@attribute, @array).to_sql.should be_like("
              `users`.`id` IN (1, 2, 3)
            ")        
          end
        end
        
        describe 'when the array\'s elements are not same type as the attribute' do
          before do
            @array = ['1-asdf', 2, 3]
          end
          
          it 'formats values in the array as the type of the attribute' do
            In.new(@attribute, @array).to_sql.should be_like("
              `users`.`id` IN (1, 2, 3)
            ")
          end
        end
      end
      
      describe 'when relating to a range' do
        before do
          @range = 1..2
        end
        
        it 'manufactures sql with a between' do
          In.new(@attribute, @range).to_sql.should be_like("
            `users`.`id` BETWEEN 1 AND 2
          ")                  
        end
      end
      
      describe 'when relating to a relation' do
        it 'manufactures sql with a subselect' do
          In.new(@attribute, @relation).to_sql.should be_like("
            `users`.`id` IN (SELECT `users`.`id`, `users`.`name` FROM `users`)
          ")        
        end
      end
    end
  end
end