commit dfd60ce7c656d95afc2e7c4c1e03be2982cc9a9d
Author: Kamil Páral <kparal@redhat.com>
Date:   Tue Jun 26 12:06:37 2018 +0200

    test_api: fix traceback
    
    This is fixed:
    ```
    Traceback (most recent call last):
      File "/builddir/build/BUILD/flask-restful-0.3.6/tests/test_api.py", line 787, in test_fr_405
        set(['HEAD', 'OPTIONS'] + HelloWorld.methods))
    TypeError: can only concatenate list (not "set") to list
    ```

diff --git a/tests/test_api.py b/tests/test_api.py
index 26447ae..f34b3f6 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -784,7 +784,7 @@ class APITestCase(unittest.TestCase):
         allow = ', '.join(set(resp.headers.get_all('Allow')))
         allow = set(method.strip() for method in allow.split(','))
         self.assertEquals(allow,
-                          set(['HEAD', 'OPTIONS'] + HelloWorld.methods))
+                          set(['HEAD', 'OPTIONS'] + list(HelloWorld.methods)))
 
     def test_exception_header_forwarded(self):
         """Test that HTTPException's headers are extended properly"""