code: def test_array_method(self):
      # Tests that the array method
      # call to nonzero works
      m = np.array([[1, 0, 0], [4, 0, 6]])
      tgt = [[0, 1, 1], [0, 0, 2]]
  
      assert_equal(m.nonzero(), tgt)
  
imports: import itertools
  from unittest import expectedFailure, skipIf
  import numpy
  import pytest
  from pytest import raises
  from torch.testing._internal.common_utils import instantiate_parametrized_tests, parametrize, run_tests, skipIfTorchDynamo, subtest, TEST_WITH_TORCHDYNAMO, TestCase, xpassIfTorchDynamo
label_desc: Use image node_id 5 for calling the TestNonzero obj's underlying member method code with example usage: obj.test_array_method() without return types