code: def generate_inputs(self):
      x = numpy.asarray(self.input).astype(self.dtype)
      return (x,)
  
imports: import unittest
  import numpy
  import pytest
  import chainer.testing
  import chainerx
  import chainerx.testing
  from chainerx_tests import array_utils
  from chainerx_tests import dtype_utils
  from chainerx_tests import math_utils
  from chainerx_tests import op_utils
label_desc: Use image node_id 1 for calling the TestNonzero obj's underlying member method code with example usage: obj.generate_inputs() and returns: x