#23718: TEST_MIRROR setting doesn't work as expected (and has no tests)
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Reporter: coagulant | Owner: nobody
Type: Bug | Status: new
Component: Testing framework | Version: 1.7
Severity: Normal | Resolution:
Keywords: replica testing | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by asser):
Just ran into this, but with raw queries instead. Using the connection
directly does not work even with {{{TransactionTestCase}}}.
So for now I'm using this hacky workaround:
{{{
#!python
from django.db import connections
class ReplicationTestCase(TestCase):
"""
Redirect raw queries to the replica, ie.
from django.db import connections
cursor = connections['replica'].cursor()
cursor.execute(...) # Is run directly on master in tests
"""
def setUp(self):
super(ReplicationTestCase, self).setUp()
connections['replica']._orig_cursor =
connections['replica'].cursor
connections['replica'].cursor = connections['master'].cursor
def tearDown(self):
connections['replica'].cursor =
connections['replica']._orig_cursor
super(ReplicationTestCase, self).tearDown()
}}}
As an added benefit it works for model managers too even though I'm not
using {{{TransactionTestCase}}} indicating that the connection might be
able to be shared in a similar way?
--
Ticket URL: <https://code.djangoproject.com/ticket/23718#comment:10>
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