Mastering Go - Second Edition

Testing HTTP handlers

In this section, we are going to learn how to test HTTP handlers in Go. We will begin with the Go code for www.go and modify it where needed.

The new version of www.go is called testWWW.go, and it will be presented in three parts. The first code portion of testWWW.go is as follows:

package main 
 
import ( 
    "fmt" 
    "net/http" 
    "os" 
) 
 
func CheckStatusOK(w http.ResponseWriter, r *http.Request) { 
    w.WriteHeader(http.StatusOK) 
    fmt.Fprintf(w, `Fine!`) 
} 

The second part of testWWW.go is contained in the following Go code:

func StatusNotFound(w http.ResponseWriter, r *http.Request) { w.WriteHeader(http.StatusNotFound) } func MyHandler(w http.ResponseWriter, r *http.Request) { fmt.Fprintf(w, "Serving: %s\n", r.URL.Path) fmt.Printf("Served: ...