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/tdjson/encoder_test.go

@@ -0,0 +1,122 @@
+package tdjson_test
+
+import (
+	"encoding/json"
+	"math"
+	"strconv"
+	"testing"
+
+	"github.com/go-faster/jx"
+	"github.com/stretchr/testify/require"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tdapi"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tdjson"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/tdp"
+)
+
+func TestEncodeDecode(t *testing.T) {
+	type obj interface {
+		tdjson.TDLibDecoder
+		tdjson.TDLibEncoder
+		TypeInfo() tdp.Type
+	}
+
+	test := func(create func() obj) func(t *testing.T) {
+		return func(t *testing.T) {
+			a := require.New(t)
+			req := create()
+
+			enc := tdjson.Encoder{
+				Writer: &jx.Writer{},
+			}
+			a.NoError(req.EncodeTDLibJSON(enc))
+			a.True(json.Valid(enc.Buf))
+
+			dec := tdjson.Decoder{
+				Decoder: jx.DecodeBytes(enc.Buf),
+			}
+			a.NoError(req.DecodeTDLibJSON(dec))
+		}
+	}
+
+	types := []obj{
+		&tdapi.SetTdlibParametersRequest{
+			UseTestDC:           true,
+			DatabaseDirectory:   "database",
+			FilesDirectory:      "files",
+			UseFileDatabase:     true,
+			UseChatInfoDatabase: true,
+			UseMessageDatabase:  true,
+			UseSecretChats:      true,
+			APIID:               10,
+			APIHash:             "russcox",
+			SystemLanguageCode:  "ru",
+			DeviceModel:         "gotd",
+			SystemVersion:       "10",
+			ApplicationVersion:  "10",
+		},
+		&tdapi.ProfilePhoto{
+			ID: 1,
+		},
+		&tdapi.ReplyMarkupInlineKeyboard{
+			Rows: [][]tdapi.InlineKeyboardButton{
+				{
+					{
+						Text: "text",
+						Type: &tdapi.InlineKeyboardButtonTypeCallback{
+							Data: []byte("a"),
+						},
+					},
+					{
+						Text: "text2",
+						Type: &tdapi.InlineKeyboardButtonTypeCallback{
+							Data: []byte("b"),
+						},
+					},
+				},
+				{
+					{
+						Text: "text3",
+						Type: &tdapi.InlineKeyboardButtonTypeCallback{
+							Data: []byte("c"),
+						},
+					},
+				},
+			},
+		},
+		// Test empty array.
+		&tdapi.ReplyMarkupInlineKeyboard{
+			Rows: [][]tdapi.InlineKeyboardButton{},
+		},
+	}
+
+	for _, typ := range types {
+		t.Run(typ.TypeInfo().Name, test(func() obj {
+			return typ
+		}))
+	}
+}
+
+func TestEncoder_PutLong(t *testing.T) {
+	for _, tt := range []int64{
+		-1,
+		0,
+		1,
+		10,
+		math.MaxInt64,
+		math.MinInt64,
+	} {
+		t.Run(strconv.FormatInt(tt, 10), func(t *testing.T) {
+			a := require.New(t)
+			e := tdjson.Encoder{Writer: &jx.Writer{}}
+			e.PutLong(tt)
+			data := e.Buf
+			a.Equal(strconv.Quote(strconv.FormatInt(tt, 10)), string(data))
+
+			d := tdjson.Decoder{Decoder: jx.DecodeBytes(data)}
+			v, err := d.Long()
+			a.NoError(err)
+			a.Equal(tt, v)
+		})
+	}
+}