Add local test

local_test.go

@@ -0,0 +1,68 @@
+package tgbotapi
+
+import (
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+type APIRequest struct {
+	Body string
+	Path string
+}
+
+func MockTelegramAPI() (*httptest.Server, chan APIRequest, chan error) {
+	reqChan := make(chan APIRequest, 1)
+	errChan := make(chan error, 1)
+
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		body, err := ioutil.ReadAll(r.Body)
+		if err != nil {
+			errChan <- err
+			return
+		}
+
+		apiReq := APIRequest{
+			Body: string(body),
+			Path: r.URL.Path,
+		}
+		reqChan <- apiReq
+		w.Write([]byte(`{"ok":true}`))
+	}))
+
+	return ts, reqChan, errChan
+}
+
+func TestSendWithMessageOffline(t *testing.T) {
+	ts, reqChan, errChan := MockTelegramAPI()
+	defer ts.Close()
+
+	bot := BotAPI{
+		APIEndpoint: ts.URL + "/bot%s/%s",
+		Client:      http.DefaultClient,
+	}
+
+	msg := NewMessage(1, "Hello, World")
+	_, err := bot.Send(msg)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var actual APIRequest
+	expected := APIRequest{
+		Body: "chat_id=1&disable_notification=false&disable_web_page_preview=false&text=Hello%2C+World",
+		Path: "/bot/sendMessage",
+	}
+
+	select {
+	case req := <-reqChan:
+		actual = req
+	case err := <-errChan:
+		t.Fatal(err)
+	}
+
+	if actual != expected {
+		t.Errorf("\nExpected:\n%+v\nActual:\n%+v\n", expected, actual)
+	}
+}