Testing JSON posts in Golang -

i trying test route created handle posting json data.

i wondering how write test route.

i have post data in map[string]interface{} , creating new request so:

mcpostbody := map[string]interface{}{     "question_text": "is test post mutliquestion?", } body, err = json.marshal(mcpostbody) req, err = http.newrequest("post", "/questions/", bytes.newreader(body)) 

however, t.log(req.postformvalue("question_text")) logs blank line don't think setting body correctly.

how can create post request json data payload in go?

because that's body of request, access reading req.body, example:

func main() {     mcpostbody := map[string]interface{}{         "question_text": "is test post mutliquestion?",     }     body, _ := json.marshal(mcpostbody)     req, err := http.newrequest("post", "/questions/", bytes.newreader(body))     var m map[string]interface{}     err = json.newdecoder(req.body).decode(&m)     req.body.close()     fmt.println(err, m) } 

//edit updated code more optimized version per elithrar's comment.