From e808bdaa15b4df61d9575192fc34cde77890da1c Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Fri, 6 Mar 2026 16:23:26 +0800
Subject: format/sideband64k: Add side-band-64k

---
 format/sideband64k/encoder_partial_write_test.go | 41 ++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 format/sideband64k/encoder_partial_write_test.go

(limited to 'format/sideband64k/encoder_partial_write_test.go')

diff --git a/format/sideband64k/encoder_partial_write_test.go b/format/sideband64k/encoder_partial_write_test.go
new file mode 100644
index 00000000..c82b1902
--- /dev/null
+++ b/format/sideband64k/encoder_partial_write_test.go
@@ -0,0 +1,41 @@
+package sideband64k_test
+
+import (
+	"io"
+	"testing"
+
+	"codeberg.org/lindenii/furgit/format/sideband64k"
+)
+
+func TestEncoderHandlesPartialWrites(t *testing.T) {
+	t.Parallel()
+
+	dst := &limitWriter{maxPerWrite: 2}
+	enc := sideband64k.NewEncoder(dst)
+
+	if err := enc.WriteProgress([]byte("abc")); err != nil {
+		t.Fatalf("WriteProgress: %v", err)
+	}
+	if err := enc.WriteFlushAndFlushIO(); err != nil {
+		t.Fatalf("WriteFlushAndFlushIO: %v", err)
+	}
+
+	if got, want := dst.buf.String(), "0008\x02abc0000"; got != want {
+		t.Fatalf("got %q, want %q", got, want)
+	}
+	if dst.flushes != 1 {
+		t.Fatalf("flushes=%d, want 1", dst.flushes)
+	}
+}
+
+func TestEncoderReturnsShortWrite(t *testing.T) {
+	t.Parallel()
+
+	dst := &limitWriter{shortWrite: true}
+	enc := sideband64k.NewEncoder(dst)
+
+	err := enc.WriteData([]byte("x"))
+	if err != io.ErrShortWrite {
+		t.Fatalf("got err %v, want io.ErrShortWrite", err)
+	}
+}
-- 
cgit v1.3.1-10-gc9f91