code: def test_to_uniqueify_list():
      assert uniqueify_list([1, 2, 3]) == [1, 2, 3]
      assert uniqueify_list([1, 3, 3, 2, 3, 1]) == [1, 3, 2]
      assert uniqueify_list([3, 2, 1, 4, 1, 2, 3]) == [3, 2, 1, 4]
  
imports: import sys
  import numpy
  import six
  from six.moves import cStringIO
  from .compat import optional_dep_ok
label_desc: Use image node_id 8 for calling a global function with example usage: test_to_uniqueify_list() without return types