go/doc/articles/wiki/final-test.patch

*** final.go	2015-06-14 23:59:22.000000000 +0200
--- final-test.go	2015-06-15 00:15:41.000000000 +0200
***************
*** 7,12 ****
--- 7,14 ----
  import (
  	"html/template"
  	"io/ioutil"
+ 	"log"
+ 	"net"
  	"net/http"
  	"regexp"
  )
***************
*** 85,89 ****
  	http.HandleFunc("/edit/", makeHandler(editHandler))
  	http.HandleFunc("/save/", makeHandler(saveHandler))
  
! 	log.Fatal(http.ListenAndServe(":8080", nil))
  }
--- 87,101 ----
  	http.HandleFunc("/edit/", makeHandler(editHandler))
  	http.HandleFunc("/save/", makeHandler(saveHandler))
  
! 	l, err := net.Listen("tcp", "127.0.0.1:0")
! 	if err != nil {
! 		log.Fatal(err)
! 	}
! 	err = ioutil.WriteFile("final-test-port.txt", []byte(l.Addr().String()), 0644)
! 	if err != nil {
! 		log.Fatal(err)
! 	}
! 	s := &http.Server{}
! 	s.Serve(l)
! 	return
  }