code: def test_equal(self):
      assert internal.vector_equal([-1, 0, 1], [-1, 0, 1]) is True
  
imports: import math
  import unittest
  import numpy
  import pytest
  from cupy._core import internal
  from cupy import testing
label_desc: Use image node_id 3 for calling the TestVectorEqual obj's underlying member method code with example usage: obj.test_equal() without return types