fix(db): version vector serialisation :( (#10050)

ffs

internal/db/sqlite/util_test.go

@@ -0,0 +1,33 @@
+// Copyright (C) 2025 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at https://mozilla.org/MPL/2.0/.
+
+package sqlite
+
+import (
+	"testing"
+
+	"github.com/syncthing/syncthing/lib/protocol"
+)
+
+func TestDbvector(t *testing.T) {
+	vec := protocol.Vector{Counters: []protocol.Counter{{ID: 42, Value: 7}, {ID: 123456789, Value: 42424242}}}
+	dbVec := dbVector{vec}
+	val, err := dbVec.Value()
+	if err != nil {
+		t.Fatal(val)
+	}
+
+	var dbVec2 dbVector
+	if err := dbVec2.Scan(val); err != nil {
+		t.Fatal(err)
+	}
+
+	if !dbVec2.Vector.Equal(vec) {
+		t.Log(vec)
+		t.Log(dbVec2.Vector)
+		t.Fatal("should match")
+	}
+}