code: def test_replace_feature_name():
      rule = "__C__0 <= 3 and __C__1 > 4"
      real_rule = "$b <= 3 and c(4) > 4"
      replace_dict = {"__C__0": "$b", "__C__1": "c(4)"}
      assert_equal(
          replace_feature_name(rule, replace_dict=replace_dict),
          real_rule,
      )
  
imports: from sklearn.utils.testing import assert_equal, assert_not_equal
  from skrules import Rule, replace_feature_name
label_desc: Use image node_id 5 for calling a global function with example usage: test_replace_feature_name() without return types