Golang 获取带有 httptest 失败的错误消息

Question

当您返回 500 服务器错误时，如何使用 httptest 获取错误消息？注册页面在手动测试时有效，所以这似乎是一些管道问题，但我找不到消息是什么。

func TestSignUp(t *testing.T) {
    var (
        password = "password"
    )

    newUser := entities.User{}
    newUser.Email = "j@doe.co.za"   
    newUser.SetPassword(password, bcrypt.MinCost)

    v := url.Values{}
    v.Add("email_address", newUser.Email)
    v.Add("password", password)     

    res := httptest.NewRecorder()
    req := &http.Request{
        Method: "POST",
        URL:    &url.URL{Path: "/signup"},
        Form:   v,
    }

    m := Martini()
    m.ServeHTTP(res, req)

    assert.Equal(t, 200, res.Code) <<<< res.Code = 500, but where is the error message?
}

Answer 1

查看 httptest.Recorder ( http://golang.org/pkg/net/http/httptest/#example_ResponseRecorder) 的示例，它看起来 res.Body.String() 就是您想要的。