code: def test_repr_simple_class():
      class Foo:
          def __init__(self, foo, bar=5):
              self.foo = foo
              self.bar = bar
  
          def __repr__(self):
              return util.repr_(self)
  
      foo = Foo("words")
      assert repr(foo) == "Foo(foo='words', bar=5)"
  
imports: import streamlit.util
label_desc: Use image node_id 1 for calling a global function with example usage: test_repr_simple_class() and returns: util