Fix delete elsewhere

gittip/models/participant.py

@@ -1020,17 +1020,15 @@ def delete_elsewhere(self, platform, user_id):
                    AND platform IN %s
             """, (self.username, AccountElsewhere.signin_platforms_names))
             assert len(accounts) > 0
-            if not [a for a in accounts if a == (platform, user_id)]:
-                raise NonexistingElsewhere()
-            if len(accounts) == 1:
+            if len(accounts) == 1 and accounts[0] == (platform, user_id):
                 raise LastElsewhere()
             c.one("""
                 DELETE FROM elsewhere
                 WHERE participant=%s
                 AND platform=%s
                 AND user_id=%s
                 RETURNING participant
-            """, (self.username, platform, user_id))
+            """, (self.username, platform, user_id), default=NonexistingElsewhere)
             add_event(c, 'participant', dict(id=self.id, action='disconnect', values=dict(platform=platform, user_id=user_id)))
 
 

tests/test_participant.py

@@ -243,6 +243,22 @@ def test_delete_elsewhere_last(self):
         with pytest.raises(LastElsewhere):
             alice.delete_elsewhere('twitter', 1)
 
+    def test_delete_elsewhere_last_signin(self):
+        alice = Participant.from_username('alice')
+        self.make_elsewhere('bountysource', alice.id, 'alice')
+        with pytest.raises(LastElsewhere):
+            alice.delete_elsewhere('twitter', 1)
+
+    def test_delete_elsewhere_nonsignin(self):
+        g = self.make_elsewhere('bountysource', 1, 'alice')
+        alice = Participant.from_username('alice')
+        alice.take_over(g)
+        accounts = alice.get_accounts_elsewhere()
+        assert accounts['twitter'] and accounts['bountysource']
+        alice.delete_elsewhere('bountysource', 1)
+        accounts = alice.get_accounts_elsewhere()
+        assert accounts['twitter'] and accounts.get('bountysource') is None
+
     def test_delete_elsewhere_nonexisting(self):
         alice = Participant.from_username('alice')
         with pytest.raises(NonexistingElsewhere):