RosettaCodeData/Task/Assertions/AWK/assertions.awk

BEGIN {
   meaning = 6 * 7
   assert(meaning == 42, "Integer mathematics failed")
   assert(meaning == 42)
   meaning = strtonum("42 also known as forty-two")
   assert(meaning == 42, "Built-in function failed")
   meaning = "42"
   assert(meaning == 42, "Dynamic type conversion failed")
   meaning = 6 * 9
   assert(meaning == 42, "Ford Prefect's experiment failed")
   print "That's all folks"
   exit
}

# Errormsg is optional, displayed if assertion fails
function assert(cond, errormsg){
   if (!cond) {
      if (errormsg != "") print errormsg
      exit 1
   }
}