httptest.ResponseRecorder没有字段或方法Result

Question

So this one is really weird, I'm trying to get a mock response that renders JSON. My test looks like this:

import (
    "fmt"
    "net/http"
    "net/http/httptest"
    "reflect"
    "strings"
    "testing"
)
...

func TestMessageFromResponse(t *testing.T) {
    mc := MyController{}
    body := "{ \"message\":\"kthxbai\" }"
    w := httptest.NewRecorder()
    w.Write([]byte(body))
    resp := w.Result()
    msg := mc.messageFromResponse(resp)
    if msg != "kthxbai" {
        t.Errorf("Expected response body to be kthxbai but was %s", msg)
    }
}

I'm testing the method messageFromResponse on MyControllerbut its not even building. When I run go test in my project directory, I get the following error:

./my_controller_test.go:115: w.Result undefined (type *httptest.ResponseRecorder has no field or method Result)

I should also mention that I am successfully using httptest.ResponseRecorder as a writer stub elsewhere in this same file, but it's just failing when I try to access Result().

Answer 1

I initially addressed this as a comment because I was unsure of relevance, but for posterity:

The online godoc always references the latest release. In this case, the Result() method was added in Go1.7 which only released last week. When in doubt, check your local godoc by running godoc -server or godoc <packagename>.