1 files changed, 30 insertions, 0 deletions
diff --git a/format/sideband64k/append_helpers_test.go b/format/sideband64k/append_helpers_test.go
new file mode 100644
index 00000000..17cd7493
--- /dev/null
+++ b/format/sideband64k/append_helpers_test.go
@@ -0,0 +1,30 @@
+package sideband64k_test
+
+import (
+	"testing"
+
+	"codeberg.org/lindenii/furgit/format/sideband64k"
+)
+
+func TestAppendHelpers(t *testing.T) {
+	t.Parallel()
+
+	out, err := sideband64k.AppendData(nil, []byte("a"))
+	if err != nil {
+		t.Fatalf("AppendData: %v", err)
+	}
+
+	out, err = sideband64k.AppendProgress(out, []byte("b"))
+	if err != nil {
+		t.Fatalf("AppendProgress: %v", err)
+	}
+
+	out, err = sideband64k.AppendError(out, []byte("c"))
+	if err != nil {
+		t.Fatalf("AppendError: %v", err)
+	}
+
+	if got, want := string(out), "0006\x01a0006\x02b0006\x03c"; got != want {
+		t.Fatalf("got %q, want %q", got, want)
+	}
+}