Valerr-Debug
Valerr Debug is something helpful when you test logics and functions.
Why Valerr?
As you know, there are many val, err := foo() in Go.
It is big problem that your test quickly.
Valerr resolves these problems with Run & Sequencing
Documentation
This simple documentation explains the core functions and how it works.
Debugger
debug := NewDebugger()To use methods before, must call NewDebugger like above.
usualErrorPosition is important to use debugger.
Before you use methods, you must check where -th error return is.
Run
Run a function seems like ignore error but, it return Result and it has Error handler.
At last you can get the error and handle this.
debug.Run(Chicken()).Pass(func(v interface{}) {
fmt.Printf("Success Run :%v\n", v)
}).Error(func(e error) {
fmt.Println("Failed to Run :", e.Error())
})Sequence
Call functions and process error by its default or handler passed through. Sequence let you know what function made error. (by indexing)
Simple Example with ForEach
debug.Sequence(Wrap(Chicken()), Wrap(Rose())).ForEach(func(i int, r Result) {
if r.Err != nil {
fmt.Println("Error At ", r.ErrWhere, ":", r.Err.Error())
return
}
fmt.Println("Success Sequence at", i, ":", r.Value)
})func Chicken() (int, error) {
return 0, errors.New("Error : chicken")
}
func Rose() (string, error) {
return "I'm a rose", nil
}