Fix JSONReponse.__eq__ on Python2 😓

Author: nicoddemus

pytest_flask/plugin.py

@@ -6,6 +6,8 @@
     :copyright: (c) by Vital Kudzelka
     :license: MIT
 """
+import sys
+
 import pytest
 
 from flask import json
@@ -32,7 +34,17 @@ def json(self):
     def __eq__(self, other):
         if isinstance(other, int):
             return self.status_code == other
-        return super(JSONResponse, self).__eq__(other)
+        # even though the Python 2-specific code works on Python 3, keep the two versions
+        # separate so we can simplify the code once Python 2 support is dropped
+        if sys.version_info[0] == 2:
+            try:
+                super_eq = super(JSONResponse, self).__eq__
+            except AttributeError:
+                return NotImplemented
+            else:
+                return super_eq(other)
+        else:
+            return super(JSONResponse, self).__eq__(other)
 
     def __ne__(self, other):
         return not self == other