code: def test_known_all(self):
      assert internal.infer_unknown_dimension((1, 2, 3), 6) == [1, 2, 3]
  
imports: import math
  import unittest
  import numpy
  import pytest
  from cupy._core import internal
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestInferUnknownDimension obj's underlying member method code with example usage: obj.test_known_all() without return types