Run payday #6

[Changaco]

Previous: #20.

[Changaco]

DB backup taken. Size is 924kB.

[Changaco]

/o\

Record(id=<redacted>, username=<redacted>, new_balance=Decimal('-0.09'), cur_balance=Decimal('0.00'))
Traceback (most recent call last):
  File "liberapay/billing/payday.py", line 589, in main
    Payday.start().run(log_dir, keep_log)
  File "liberapay/billing/payday.py", line 78, in run
    self.shuffle(log_dir)
  File "liberapay/billing/payday.py", line 120, in shuffle
    self.check_balances(cursor)
  File "liberapay/billing/payday.py", line 397, in check_balances
    raise NegativeBalance()
NegativeBalance: 400 Bad Request

[Changaco]

The user in question has an unfunded donation to a team.

[Changaco]

I came up with a fix. I've been trying to make a failing test for the bug but I haven't been successful yet. So in the meantime I've applied the fix and rerun payday.

[Changaco]

Script ran for 24 seconds (0:00:24.500755).

[Changaco]

# select * from paydays;
 id |           ts_start            |            ts_end             | nparticipants | ntippers | ntippees | ntips | ntransfers | transfer_volume | ntakes | take_volume | nactive | nusers | week_deposits | week_withdrawals 
----+-------------------------------+-------------------------------+---------------+----------+----------+-------+------------+-----------------+--------+-------------+---------+--------+---------------+------------------
  1 | 2016-02-10 14:15:12.857116+00 | 2016-02-10 14:16:20.367284+00 |            20 |        7 |        6 |     5 |         11 |            5.16 |      6 |        2.01 |       9 |     30 |        102.00 |             0.00
  2 | 2016-02-17 09:34:56.46043+00  | 2016-02-17 09:42:30.279562+00 |            24 |        8 |        6 |     5 |         13 |            5.91 |      8 |        3.01 |      10 |     39 |         10.00 |             0.00
  3 | 2016-02-24 12:10:24.637909+00 | 2016-02-24 12:13:54.69294+00  |            31 |        9 |        6 |     5 |         15 |            7.48 |     10 |        4.58 |      11 |     46 |          0.00 |             0.00
  4 | 2016-03-02 13:22:54.690032+00 | 2016-03-02 13:28:28.41217+00  |            42 |       11 |        6 |     5 |         18 |            8.09 |     13 |        5.19 |      12 |     63 |         30.00 |             0.00
  5 | 2016-03-09 10:36:00.199178+00 | 2016-03-09 10:36:17.358605+00 |            47 |       12 |        6 |     6 |         22 |            9.47 |     16 |        5.57 |      13 |     72 |         95.75 |             0.00
  6 | 2016-03-16 12:38:13.996162+00 | 2016-03-16 13:03:30.525192+00 |            56 |       13 |       10 |     7 |         32 |           23.47 |     25 |       19.47 |      17 |     80 |          0.00 |             3.22
(6 rows)

[Changaco]

https://twitter.com/liberapaye/status/710093919946670080