Commit a2967d52 authored by Tim Graham's avatar Tim Graham
Browse files

Fixed #20242 - Added a regression test for prefetch_related. 

Issue was fixed by removal of chunked reads from
QuerySet iteration in 70679243.

Thanks Simeon Visser for the patch.
parent 1fdc3d25

AUTHORS

+1 −0
Original line number Diff line number Diff line
@@ -594,6 +594,7 @@ answer newbie questions, and generally made Django that much better: 
    I.S. van Oostveen <v.oostveen@idca.nl>

    viestards.lists@gmail.com

    George Vilches <gav@thataddress.com>

    Simeon Visser <http://simeonvisser.com>

    Vlado <vlado@labath.org>

    Zachary Voase <zacharyvoase@gmail.com>

    Marijn Vriens <marijn@metronomo.cl>

tests/prefetch_related/tests.py

+10 −0
Original line number Diff line number Diff line
@@ -107,6 +107,16 @@ class PrefetchRelatedTests(TestCase): 
            qs = Book.objects.prefetch_related('first_time_authors')

            [b.first_time_authors.exists() for b in qs]



    def test_in_and_prefetch_related(self):

        """

        Regression test for #20242 - QuerySet "in" didn't work the first time

        when using prefetch_related. This was fixed by the removal of chunked

        reads from QuerySet iteration in

        70679243d1786e03557c28929f9762a119e3ac14.

        """

        qs = Book.objects.prefetch_related('first_time_authors')

        self.assertTrue(qs[0] in qs)



    def test_clear(self):

        """

        Test that we can clear the behavior by calling prefetch_related()