code: def test_DictCache():
      d = DictCache(size_limit=2)
  
      assert_equal(d, {})
      d["a"] = 2
      d["b"] = 1
      assert_equal(d, {"a": 2, "b": 1})
  
      d["c"] = 2
      assert_equal(d, {"c": 2, "b": 1})
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_DictCache() without return types