update lower_dict_keys, avoid mistakes in OrderDict

ate/utils.py

@@ -287,31 +287,28 @@ def search_conf_item(start_path, item_type, item_name):
 
     return search_conf_item(dir_path, item_type, item_name)
 
-def lower_dict_key(origin_dict, depth=1):
-    """ convert dict key to lower case, with depth control supported.
+def lower_dict_keys(origin_dict):
+    """ convert keys in dict to lower case
+    e.g.
+        Name => name, Request => request
+        URL => url, METHOD => method, Headers => headers, Data => data
     """
-    new_dict = {}
+    if not origin_dict or not isinstance(origin_dict, dict):
+        return origin_dict
 
-    for key, value in origin_dict.items():
-        if depth >= 2:
-            new_dict[key] = value
-            continue
-
-        if isinstance(value, dict):
-            value = lower_dict_key(value, depth+1)
-
-        new_dict[key.lower()] = value
-
-    return new_dict
+    return {
+        key.lower(): value
+        for key, value in origin_dict.items()
+    }
 
 def lower_config_dict_key(config_dict):
     """ convert key in config dict to lower case, convertion will occur in two places:
         1, all keys in config dict;
         2, all keys in config["request"]
     """
-    config_dict = lower_dict_key(config_dict)
-    if "request" in config_dict and isinstance(config_dict["request"], dict):
-        config_dict["request"] = lower_dict_key(config_dict["request"])
+    config_dict = lower_dict_keys(config_dict)
+    if "request" in config_dict:
+        config_dict["request"] = lower_dict_keys(config_dict["request"])
 
     return config_dict