code: def test_case(self) -> None:
      e = bce.enumeration("foo", "bar", "baz", case_sensitive=False)
      assert isinstance(e, bce.Enumeration)
      assert str(e) == "Enumeration(foo, bar, baz)"
      assert [x for x in e] == ["foo", "bar", "baz"]
      for x in ["foo", "FOO", "bar", "bAr", "baz", "BAZ"]:
          assert x in e
      assert "junk" not in e
  
imports: from __future__ import annotations
  import pytest
  from bokeh.colors import named
  from bokeh.palettes import __palettes__
  from tests.support.util.api import verify_all
  import bokeh.core.enums
label_desc: Use image node_id 2 for calling the Test_enumeration obj's underlying member method code with example usage: obj.test_case() without return types