tests: implement options test

options.go

@@ -57,7 +57,6 @@ func (og *SendOptions) copy() *SendOptions {
 	if cp.ReplyMarkup != nil {
 		cp.ReplyMarkup = cp.ReplyMarkup.copy()
 	}
-
 	return &cp
 }
 
@@ -110,16 +109,20 @@ type ReplyMarkup struct {
 func (r *ReplyMarkup) copy() *ReplyMarkup {
 	cp := *r
 
-	cp.ReplyKeyboard = make([][]ReplyButton, len(r.ReplyKeyboard))
-	for i, row := range r.ReplyKeyboard {
-		cp.ReplyKeyboard[i] = make([]ReplyButton, len(row))
-		copy(cp.ReplyKeyboard[i], row)
+	if len(r.ReplyKeyboard) > 0 {
+		cp.ReplyKeyboard = make([][]ReplyButton, len(r.ReplyKeyboard))
+		for i, row := range r.ReplyKeyboard {
+			cp.ReplyKeyboard[i] = make([]ReplyButton, len(row))
+			copy(cp.ReplyKeyboard[i], row)
+		}
 	}
 
-	cp.InlineKeyboard = make([][]InlineButton, len(r.InlineKeyboard))
-	for i, row := range r.InlineKeyboard {
-		cp.InlineKeyboard[i] = make([]InlineButton, len(row))
-		copy(cp.InlineKeyboard[i], row)
+	if len(r.InlineKeyboard) > 0 {
+		cp.InlineKeyboard = make([][]InlineButton, len(r.InlineKeyboard))
+		for i, row := range r.InlineKeyboard {
+			cp.InlineKeyboard[i] = make([]InlineButton, len(row))
+			copy(cp.InlineKeyboard[i], row)
+		}
 	}
 
 	return &cp

options_test.go

@@ -23,7 +23,7 @@ func TestBtn(t *testing.T) {
 	assert.Equal(t, &InlineButton{Text: "T", Login: &Login{Text: "T"}}, r.Login("T", &Login{Text: "T"}).Inline())
 }
 
-func TestReplyInline(t *testing.T) {
+func TestOptions(t *testing.T) {
 	r := &ReplyMarkup{}
 	r.Reply(
 		r.Row(r.Text("Menu")),
@@ -36,13 +36,28 @@ func TestReplyInline(t *testing.T) {
 	}, r.ReplyKeyboard)
 
 	i := &ReplyMarkup{}
-	i.Inline(r.Row(
-		r.Data("Previous", "prev"),
-		r.Data("Next", "next"),
+	i.Inline(i.Row(
+		i.Data("Previous", "prev"),
+		i.Data("Next", "next"),
 	))
 
 	assert.Equal(t, [][]InlineButton{{
 		{Unique: "prev", Text: "Previous"},
 		{Unique: "next", Text: "Next"},
 	}}, i.InlineKeyboard)
+
+	assert.Panics(t, func() {
+		r.Reply(r.Row(r.Data("T", "u")))
+		i.Inline(i.Row(i.Text("T")))
+	})
+
+	assert.Equal(t, r.copy(), r)
+	assert.Equal(t, i.copy(), i)
+
+	o := &SendOptions{ReplyMarkup: r}
+	assert.Equal(t, o.copy(), o)
+
+	data, err := PollQuiz.MarshalJSON()
+	assert.NoError(t, err)
+	assert.Equal(t, []byte(`{"type":"quiz"}`), data)
 }