package main

import (
	"errors"
	"golang.org/x/net/context"
	"golang.org/x/oauth2"
	"net/http"
	"testing"
)

type appOAuthTransfer1 struct {
	rt func(req *http.Request) (resp *http.Response, err error)
}

func (t *appOAuthTransfer1) RoundTrip(req *http.Request) (resp *http.Response, err error) {
	return t.rt(req)
}

func TestExchangeRequest(t *testing.T) {
	tr := &appOAuthTransfer1{
		rt: func(r *http.Request) (w *http.Response, err error) {
			headerAuth := r.Header.Get("Authorization")
			if headerAuth != "" {
				t.Errorf("Unexpected authorization header, %v is found.", headerAuth)
			}
			return nil, errors.New("no response")
		},
	}

	c := &http.Client{Transport: tr}

	conf := getConfig(FB_TYPE)
	ctx := context.WithValue(context.Background(), oauth2.HTTPClient, c)
	conf.Exchange(ctx, "code")
}