Merge pull request #150 from Kinto/147-more-context-on-KintoException

Add more context on KintoExceptions

Author: leplatrem

kinto_http/exceptions.py

@@ -12,6 +12,12 @@ def __init__(self, message=None, exception=None):
             self.request = None
             self.response = None
 
+    def __str__(self):
+        if self.request is not None and self.response is not None:
+            return '{} {} - {} {}'.format(self.request.method, self.request.path_url,
+                                          self.response.status_code, self.message)
+        return self.message
+
 
 class BucketNotFound(KintoException):
     pass

kinto_http/tests/functional.py

@@ -131,14 +131,18 @@ def test_group_creation_if_not_exists(self):
             if_not_exists=True)
 
     def test_group_creation_if_bucket_does_not_exist(self):
-        with pytest.raises(KintoException):
+        with pytest.raises(KintoException) as e:
             self.client.create_group(
                 id='payments', bucket='mozilla',
                 data={'members': ['blah', ]})
             self.client.create_group(
                 id='payments', bucket='mozilla',
                 data={'members': ['blah', ]},
                 if_not_exists=True)
+        assert str(e).endswith('PUT /v1/buckets/mozilla/groups/payments - '
+                               '403 Unauthorized. Please check that the '
+                               'bucket exists and that you have the permission '
+                               'to create or write on this group.')
 
     def test_group_update(self):
         self.client.create_bucket(id='mozilla')