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/proto/gzip_test.go

@@ -0,0 +1,86 @@
+package proto
+
+import (
+	"bytes"
+	"crypto/rand"
+	"io"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"go.mau.fi/mautrix-telegram/pkg/gotd/bin"
+	"go.mau.fi/mautrix-telegram/pkg/gotd/testutil"
+)
+
+func TestGZIP_Encode(t *testing.T) {
+	data := bytes.Repeat([]byte{1, 2, 3}, 100)
+	g := &GZIP{
+		Data: data,
+	}
+
+	var b bin.Buffer
+	require.NoError(t, b.Encode(g))
+
+	var decoded GZIP
+	require.NoError(t, b.Decode(&decoded))
+	require.Equal(t, data, decoded.Data)
+}
+
+func TestGZIP_Decode(t *testing.T) {
+	g := &GZIP{
+		Data: make([]byte, 1024*1024*15),
+	}
+	var b bin.Buffer
+	require.NoError(t, b.Encode(g))
+
+	var (
+		decoded GZIP
+		target  *DecompressionBombErr
+	)
+	require.ErrorAs(t, b.Decode(&decoded), &target)
+	require.Less(t, len(decoded.Data), len(g.Data))
+}
+
+func benchmarkGZIPEncode(payloadSize int) func(b *testing.B) {
+	return func(b *testing.B) {
+		g := &GZIP{Data: make([]byte, payloadSize)}
+		_, err := io.ReadFull(rand.Reader, g.Data)
+		require.NoError(b, err)
+
+		var buf bin.Buffer
+		b.ReportAllocs()
+		b.SetBytes(int64(payloadSize))
+		b.ResetTimer()
+
+		for i := 0; i < b.N; i++ {
+			buf.Reset()
+			_ = g.Encode(&buf)
+		}
+	}
+}
+
+func BenchmarkGZIP_Encode(b *testing.B) {
+	testutil.RunPayloads(b, benchmarkGZIPEncode)
+}
+
+func benchmarkGZIPDecode(payloadSize int) func(b *testing.B) {
+	return func(b *testing.B) {
+		g := &GZIP{Data: make([]byte, payloadSize)}
+		_, err := io.ReadFull(rand.Reader, g.Data)
+		require.NoError(b, err)
+
+		var buf bin.Buffer
+		require.NoError(b, g.Encode(&buf))
+		b.ReportAllocs()
+		b.SetBytes(int64(payloadSize))
+		b.ResetTimer()
+
+		for i := 0; i < b.N; i++ {
+			_ = g.Decode(&bin.Buffer{Buf: buf.Buf})
+		}
+	}
+}
+
+func BenchmarkGZIP_Decode(b *testing.B) {
+	testutil.RunPayloads(b, benchmarkGZIPDecode)
+}