Modify code, add test file

messenger.go

@@ -113,11 +113,7 @@ func DecodeRequest(r *http.Request) (FacebookRequest, error) {
 	defer r.Body.Close()
 	var fbRq FacebookRequest
 	err := json.NewDecoder(r.Body).Decode(&fbRq)
-	if err != nil {
-		return fbRq, err //log.Println("!!!!", err)
-	}
-
-	return fbRq, nil
+	return fbRq, err
 }
 
 // decodeResponse decodes Facebook response after sending message, usually contains MessageID or Error
@@ -126,7 +122,7 @@ func decodeResponse(r *http.Response) (FacebookResponse, error) {
 	var fbResp rawFBResponse
 	err := json.NewDecoder(r.Body).Decode(&fbResp)
 	if err != nil {
-		return FacebookResponse{}, nil
+		return FacebookResponse{}, err
 	}
 
 	if fbResp.Error != nil {

messenger_test.go

@@ -0,0 +1,61 @@
+package messenger_test
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/mileusna/facebook-messenger"
+)
+
+var fs *httptest.Server
+
+var ts *httptest.Server
+
+const (
+	verifyToken = "my_secret_token"
+)
+
+func TestMain(m *testing.M) {
+	// fs will mock up fb messenger server
+	fs = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		rec := messenger.FacebookResponse{
+			RecipientID: 12123213123,
+			MessageID:   "mid00000TEST00000TEST00000TEST",
+		}
+		b, _ := json.Marshal(rec)
+		w.Write(b)
+	}))
+	defer fs.Close()
+
+	// setup chatbot
+	messenger.TestURL = fs.URL + "/"
+
+	msng := &messenger.Messenger{
+		AccessToken: "XXXXXXX",
+		VerifyToken: verifyToken,
+	}
+
+	//chatbot.Messenger.MessageReceived = chatbot.MessageReceived
+	//chatbot.Messenger.DeliveryReceived = chatbot.DeliveryReceived
+	//chatbot.Messenger.PostbackReceived = chatbot.PostbackReceived
+
+	// ts is our test chatbot
+	ts = httptest.NewServer(msng)
+	defer ts.Close()
+
+	m.Run()
+}
+
+func TestVerify(t *testing.T) {
+	challenge := "1122334455"
+	verifyReq := ts.URL + "/?test=1&hub.mode=subscribe&hub.challenge=" + challenge + "&hub.verify_token=" + verifyToken
+	resp, _ := http.Get(verifyReq)
+	defer resp.Body.Close()
+	s, _ := ioutil.ReadAll(resp.Body)
+	if string(s) != challenge {
+		t.Error("Challenge failed, expected", challenge, "returned", string(s))
+	}
+}