bugfix:解决validate为空时沿用上一个接口的validate问题

httprunner/context.py

@@ -168,12 +168,12 @@ class SessionContext(object):
     def validate(self, validators, resp_obj):
         """ make validations
         """
+        self.validation_results = []
         if not validators:
             return
 
         logger.log_debug("start to validate.")
 
-        self.validation_results = []
         validate_pass = True
         failures = []
 

tests/test_context.py

@@ -146,6 +146,9 @@ class TestContext(ApiServerUnittest):
         self.context.init_test_variables(variables)
         self.context.validate(validators, resp_obj)
 
+        self.context.validate([], resp_obj)
+        self.assertEqual(self.context.validation_results, [])
+
     def test_validate_exception(self):
         url = "http://127.0.0.1:5000/"
         resp = requests.get(url)