fix: print_info value is None

TypeError: unsupported format string passed to NoneType.__format__

httprunner/utils.py

@@ -385,6 +385,8 @@ def print_info(info_mapping):
             continue
         elif isinstance(value, (dict, list)):
             value = json.dumps(value)
+        elif value is None:
+            value = "None"
 
         if is_py2:
             if isinstance(key, unicode):

tests/test_utils.py

@@ -263,3 +263,15 @@ class TestUtils(ApiServerUnittest):
         parameters_content_list = []
         product_list = utils.gen_cartesian_product(*parameters_content_list)
         self.assertEqual(product_list, [])
+
+    def test_print_info(self):
+        info_mapping = {
+            "a": 1,
+            "t": (1, 2),
+            "b": {
+                "b1": 123
+            },
+            "c": None,
+            "d": [4, 5]
+        }
+        utils.print_info(info_mapping)