removed test & added ability to connect without credentials

bot.go

@@ -67,7 +67,14 @@ func NewBotAPIViaProxy(token string, proxySettings ProxyCredentials) (*BotAPI, e
 	client := &http.Client{}
 
 	if proxySettings.UseProxy {
-		fixedURL, err := url.Parse(fmt.Sprintf("%s://%s:%s@%s:%s", proxySettings.Protocol, proxySettings.Username, proxySettings.Password, proxySettings.IP, proxySettings.Port))
+		var fixedURL *url.URL
+		var err error
+
+		if proxySettings.Username != "" && proxySettings.Password != "" {
+			fixedURL, err = url.Parse(fmt.Sprintf("%s://%s:%s@%s:%s", proxySettings.Protocol, proxySettings.Username, proxySettings.Password, proxySettings.IP, proxySettings.Port))
+		} else {
+			fixedURL, err = url.Parse(fmt.Sprintf("%s://%s:%s", proxySettings.Protocol, proxySettings.IP, proxySettings.Port))
+		}
 
 		if err == nil {
 			tr := &http.Transport{Proxy: http.ProxyURL(fixedURL)}

bot_test.go

@@ -8,7 +8,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/go-telegram-bot-api/telegram-bot-api/"
+	"github.com/mkutin/telegram-bot-api"
 )
 
 const (
@@ -23,12 +23,6 @@ const (
 	ExistingVideoFileID     = "BAADAgADZgADjMcoCav432kYe0FRAg"
 	ExistingVideoNoteFileID = "DQADAgADdQAD70cQSUK41dLsRMqfAg"
 	ExistingStickerFileID   = "BQADAgADcwADjMcoCbdl-6eB--YPAg"
-	UseProxy 				= true
-	ProxyProtocol  			= "SOCKS5"
-	ProxyUsername 			= "YGko8h"
-	ProxyPassword 			= "VofoA7"
-	ProxyIP 				= "185.179.113.223"
-	ProxyPort 				= "8000"
 )
 
 func getBot(t *testing.T) (*tgbotapi.BotAPI, error) {
@@ -43,15 +37,6 @@ func getBot(t *testing.T) (*tgbotapi.BotAPI, error) {
 	return bot, err
 }
 
-func TestNewBotAPIViaProxy(t *testing.T) {
-	_, err := tgbotapi.NewBotAPIViaProxy(TestToken, tgbotapi.NewProxyCredentials(UseProxy, ProxyProtocol, ProxyUsername, ProxyPassword, ProxyIP, ProxyPort))
-
-	if err != nil {
-		t.Error(err)
-		t.Fail()
-	}
-}
-
 func TestNewBotAPI_notoken(t *testing.T) {
 	_, err := tgbotapi.NewBotAPI("")