code: def test_duplicate_axis(self):
      with self.assertRaises(ValueError):
          self.function(self.x, (0, 0))
  
imports: import unittest
  import numpy
  import chainer
  from chainer import functions
  from chainer import testing
  from chainer import utils
label_desc: Use image node_id 4 for calling the TestMinMaxInvalid obj's underlying member method code with example usage: obj.test_duplicate_axis() without return types