code: def test_vector_serialization():
      v = vector([1, 2, 3])
      ser = pickle.dumps(v, 2)
      deser = pickle.loads(ser)
      assert str(v) == str(deser)
  
imports: from dlib import vector, vectors, vectorss, dot
  from pytest import raises
label_desc: Use image node_id 10 for calling a global function with example usage: test_vector_serialization() without return types