extend test_app_with_views check app follows flask 0.6 default behavior

flask default behavio for url_rules methods is, that it defaults to
GET, HEAD and OPTIONS if no methods is set. This musst be reflected by
the manifest.

test/test_sams_app.py

@@ -66,7 +66,8 @@ class TestSAMSApp(unittest.TestCase):
             'GET', 'POST', 'DELETE', 'PUT', 'UPDATE', 'HEAD', 'PATCH',
             'OPTIONS'
           ]
-        }
+        }, 
+        {'url': 'test/do_nothing_defaults', 'function': 'views.do_nothing'}
       ]
     }
     app = SAMSApp(name = 'test', manifest = manifest
@@ -79,10 +80,17 @@ class TestSAMSApp(unittest.TestCase):
     thApp.start()
     time.sleep(0.01)
     for method in manifest['views'][0]['methods']:
-      with self.subTest(method):
+      with self.subTest('do_nothing: ' + method):
         response = requests.request(
           method = method, url = 'http://localhost:5000/test/do_nothing')
         self.assertIs(response.status_code, 200)
+    for method in ('GET', 'HEAD', 'OPTIONS'):
+      # Check that app follows flask 0.6 default behavior for no methods defined
+      with self.subTest('do_nothing_default: ' + method):
+        response = requests.request(
+          method = method,
+          url = 'http://localhost:5000/test/do_nothing_defaults')
+        self.assertIs(response.status_code, 200)  
     requests.request(
       method = 'GET', url = 'http://localhost:5000/shutdown')
     time.sleep(0.01)