test unauthorized case.

main.go

 	http.HandleFunc("/MP_verify_6JqVkftKr39GMakA.txt", mpDomainAuthSecret)
 	http.HandleFunc("/profile_newly_register", initialRegistrationHandler)
 	http.HandleFunc("/iapi/getAccessToken", supplyAccessToken)
+	http.HandleFunc("/iapi/createQr", iapiCreateQrCode)
 	http.ListenAndServe(":65500", nil)
 }
 
 }
 
 func supplyAccessToken(w http.ResponseWriter, r *http.Request) {
-	logRequestDebug(httputil.DumpRequest(r, true))
+	//logRequestDebug(httputil.DumpRequest(r, true))
 	if checkSignatureByToken(r, IntraAPIConfig.CRMSecrete) {
 		atk, _ := GetAccessToken()
 		fmt.Fprint(w, atk)
 	} else {
-		fmt.Fprint(w, "errortoken")
+		w.WriteHeader(401)
+		fmt.Fprint(w, "unauthorized")
+	}
+}
+
+func iapiCreateQrCode(w http.ResponseWriter, r *http.Request) {
+	if !checkSignatureByToken(r, IntraAPIConfig.CRMSecrete) {
+		fmt.Fprint(w, "unauthorized")
 	}
 
 }

server_test.go

 	log.Printf("TestGetAccesstoken got: [%s] ", m)
 	AssertEqual(t, m != errorResponse, true, "Signature check failed, error response")
 	AssertEqual(t, m, expected, "token incorrect")
+
+}
+
+func TestGetAccesstokenUnAuthorized(t *testing.T) {
+	req := buildReqGetAccessTokenUnAuthorized()
+	rr, _ := getHTTPResponse(req, supplyAccessToken)
+	errorResponse := "unauthorized"
+	m := rr.Body.String()
+	expected, _ := GetAccessToken()
+	log.Printf("TestGetAccesstoken got: [%s] ", m)
+	AssertEqual(t, m, errorResponse, "should be unauthorized")
+	AssertEqual(t, m != expected, true, "token should not be returned")
+
 }
 
 func getHTTPResponse(req *http.Request, handler http.HandlerFunc) (rr *httptest.ResponseRecorder, err error) {
 	return req
 }
 
+func buildReqGetAccessTokenUnAuthorized() *http.Request {
+	req, err := http.NewRequest("GET", "/iapi/getAccessToken", nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+	//buildReqCommonSignature(req, IntraAPIConfig.CRMSecrete)
+	buildReqCommonHeader(req)
+	return req
+}
+
 func buildSignature(token string) (signature, timestamp, nonce string) {
 	timestamp = fmt.Sprintf("%d", int32(time.Now().Unix()))
 	nonce = "1461107899" //a randome string cut from previous wechat request