package main import "fmt" type TitleCaseValue int const ( titlecasevalueone TitleCaseValue = iota titlecasevaluetwo titlecasevaluethree ) func main() { ck(titlecasevalueone, "Titlecasevalueone") ck(titlecasevaluetwo, "Titlecasevaluetwo") ck(titlecasevaluethree, "Titlecasevaluethree") ck(-127, "") ck(127, "") } func ck(value TitleCaseValue, str string) { if fmt.Sprint(value) != str { panic("transform_title.go: " + str) } }