Uploading a new photo to a channel functionality added.

bot_test.go

@@ -11,6 +11,7 @@ import (
 const (
 	TestToken               = "153667468:AAHlSHlMqSt1f_uFmVRJbm5gntu2HI4WW8I"
 	ChatID                  = 76918703
+	Channel                 = "@tgbotapitest"
 	SupergroupChatID        = -1001120141283
 	ReplyToMessageID        = 35
 	ExistingPhotoFileID     = "AgADAgADw6cxG4zHKAkr42N7RwEN3IFShCoABHQwXEtVks4EH2wBAAEC"
@@ -153,6 +154,51 @@ func TestSendWithNewPhotoReply(t *testing.T) {
 	}
 }
 
+func TestSendNewPhotoToChannel(t *testing.T) {
+	bot, _ := getBot(t)
+
+	msg := NewPhotoUploadToChannel(Channel, "tests/image.jpg")
+	msg.Caption = "Test"
+	_, err := bot.Send(msg)
+
+	if err != nil {
+		t.Error(err)
+		t.Fail()
+	}
+}
+
+func TestSendNewPhotoToChannelFileBytes(t *testing.T) {
+	bot, _ := getBot(t)
+
+	data, _ := ioutil.ReadFile("tests/image.jpg")
+	b := FileBytes{Name: "image.jpg", Bytes: data}
+
+	msg := NewPhotoUploadToChannel(Channel, b)
+	msg.Caption = "Test"
+	_, err := bot.Send(msg)
+
+	if err != nil {
+		t.Error(err)
+		t.Fail()
+	}
+}
+
+func TestSendNewPhotoToChannelFileReader(t *testing.T) {
+	bot, _ := getBot(t)
+
+	f, _ := os.Open("tests/image.jpg")
+	reader := FileReader{Name: "image.jpg", Reader: f, Size: -1}
+
+	msg := NewPhotoUploadToChannel(Channel, reader)
+	msg.Caption = "Test"
+	_, err := bot.Send(msg)
+
+	if err != nil {
+		t.Error(err)
+		t.Fail()
+	}
+}
+
 func TestSendWithExistingPhoto(t *testing.T) {
 	bot, _ := getBot(t)
 

helpers.go

@@ -67,6 +67,24 @@ func NewPhotoUpload(chatID int64, file interface{}) PhotoConfig {
 	}
 }
 
+// NewPhotoUploadToChannel creates a new photo uploader to send a photo to a channel.
+//
+// username is the username of the channel, file is a string path to the file,
+// FileReader, or FileBytes.
+//
+// Note that you must send animated GIFs as a document.
+func NewPhotoUploadToChannel(username string, file interface{}) PhotoConfig {
+	return PhotoConfig{
+		BaseFile: BaseFile{
+			BaseChat: BaseChat{
+				ChannelUsername: username,
+			},
+			File:        file,
+			UseExisting: false,
+		},
+	}
+}
+
 // NewPhotoShare shares an existing photo.
 // You may use this to reshare an existing photo without reuploading it.
 //