1 files changed, 51 insertions, 0 deletions
diff --git a/protocol/sideband64k/decoder_resync_after_over_max_data_test.go b/protocol/sideband64k/decoder_resync_after_over_max_data_test.go
new file mode 100644
index 00000000..dea396d1
--- /dev/null
+++ b/protocol/sideband64k/decoder_resync_after_over_max_data_test.go
@@ -0,0 +1,51 @@
+package sideband64k_test
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"testing"
+
+	"codeberg.org/lindenii/furgit/protocol/sideband64k"
+)
+
+func TestDecoderResyncAfterOverMaxData(t *testing.T) {
+	t.Parallel()
+
+	var b bytes.Buffer
+
+	bw := bufio.NewWriter(&b)
+	enc := sideband64k.NewEncoder(bw)
+
+	err := enc.WriteData([]byte("abcd"))
+	if err != nil {
+		t.Fatalf("WriteData #1: %v", err)
+	}
+
+	err = enc.WriteData([]byte("z"))
+	if err != nil {
+		t.Fatalf("WriteData #2: %v", err)
+	}
+
+	err = enc.FlushIO()
+	if err != nil {
+		t.Fatalf("FlushIO: %v", err)
+	}
+
+	dec := sideband64k.NewDecoder(bytes.NewReader(b.Bytes()), sideband64k.ReadOptions{})
+	dec.SetMaxData(1)
+
+	_, err = dec.ReadFrame()
+	if !errors.Is(err, sideband64k.ErrTooLarge) {
+		t.Fatalf("got err %v, want ErrTooLarge", err)
+	}
+
+	f, err := dec.ReadFrame()
+	if err != nil {
+		t.Fatalf("ReadFrame #2: %v", err)
+	}
+
+	if f.Type != sideband64k.FrameData || string(f.Payload) != "z" {
+		t.Fatalf("got frame %#v, want data z", f)
+	}
+}