(add-tests-with-string-output "integers"      
  [0  => "0\n"]                    
  [1  => "1\n"]                    
  [-1 => "-1\n"]                   
  [10  => "10\n"]                    
  [-10 => "-10\n"]                   
  [2736 => "2736\n"]               
  [-2736 => "-2736\n"]             
  [536870911 => "536870911\n"]     
  [-536870912 => "-536870912\n"]   
)