move gotd fork into repo. (#111)

- update to latest telegram layer
- remove some references to fields in tg.Entities that don't exist in
the schema
- originally added here:
https://github.com/beeper/td/commit/820929062a2ba0104397bc01235ab58a9cff780e
  - referenced here
-
https://github.com/mautrix/telegramgo/commit/124f0967ed195b5a380c9bd02e170ada9710dde3
-
https://github.com/mautrix/telegramgo/commit/4205047aab2e0639217148b5d125bfaab668bd8e

pkg/gotd/telegram/peers/multichat_test.go

@@ -0,0 +1,76 @@
+package peers
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tg"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tgmock"
+)
+
+type multiChat interface {
+	Peer
+	Creator() bool
+	Left() bool
+	NoForwards() bool
+	CallActive() bool
+	CallNotEmpty() bool
+	ParticipantsCount() int
+	AdminRights() (tg.ChatAdminRights, bool)
+	DefaultBannedRights() (tg.ChatBannedRights, bool)
+
+	Leave(ctx context.Context) error
+	SetTitle(ctx context.Context, title string) error
+	SetDescription(ctx context.Context, about string) error
+
+	InviteLinks() InviteLinks
+	ToBroadcast() (Broadcast, bool)
+	IsBroadcast() bool
+	ToSupergroup() (Supergroup, bool)
+	IsSupergroup() bool
+
+	SetReactions(ctx context.Context, r ...tg.ReactionClass) error
+	DisableReactions(ctx context.Context) error
+}
+
+var _ = []multiChat{
+	Chat{},
+	Channel{},
+}
+
+func TestReactions(t *testing.T) {
+	a := require.New(t)
+	ctx := context.Background()
+	mock, m := testManager(t)
+
+	req := func(p Peer, r ...tg.ReactionClass) *tgmock.RequestBuilder {
+		var reactions tg.ChatReactionsClass = &tg.ChatReactionsSome{Reactions: r}
+		if len(r) == 0 {
+			reactions = &tg.ChatReactionsNone{}
+		}
+		return mock.ExpectCall(&tg.MessagesSetChatAvailableReactionsRequest{
+			Peer:               p.InputPeer(),
+			AvailableReactions: reactions,
+		})
+	}
+	reactions := []tg.ReactionClass{
+		&tg.ReactionEmoji{Emoticon: "👍"},
+		&tg.ReactionEmoji{Emoticon: "A"},
+	}
+	for _, p := range []multiChat{
+		m.Chat(getTestChat()),
+		m.Channel(getTestChannel()),
+	} {
+		req(p, reactions...).ThenRPCErr(getTestError())
+		a.Error(p.SetReactions(ctx, reactions...))
+		req(p, reactions...).ThenResult(&tg.Updates{})
+		a.NoError(p.SetReactions(ctx, reactions...))
+
+		req(p).ThenRPCErr(getTestError())
+		a.Error(p.DisableReactions(ctx))
+		req(p).ThenResult(&tg.Updates{})
+		a.NoError(p.DisableReactions(ctx))
+	}
+}