package main

import (
	"log"

	"github.com/go-sql-driver/mysql"
)

func main() {
	testDSN := "usr/pwd@tcp(127.0.0.1:3306)/dbname?connectionAttributes=foo:bar"
	cfg, err := mysql.ParseDSN(testDSN)
	if err != nil {
		log.Fatal("something went really wrong")
	}

	if cfg.ConnectionAttributes == "foo:bar" {
		reformattedDSN := cfg.FormatDSN()
		if reformattedDSN != testDSN {
			log.Fatalf("Ooops, that's buggy\noriginalDSN = %q\nreformattedDSN = %q", testDSN, reformattedDSN)
		}
	} else {
		log.Fatal("I wasn't expecting this")
	}
}