diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/queries/test_qs_combinators.py | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tests/queries/test_qs_combinators.py b/tests/queries/test_qs_combinators.py index 97b3f97b68..865e172816 100644 --- a/tests/queries/test_qs_combinators.py +++ b/tests/queries/test_qs_combinators.py @@ -61,6 +61,32 @@ class QuerySetSetOperationTests(TestCase): self.assertSequenceEqual(qs3.none(), []) self.assertNumbersEqual(qs3, [0, 1, 8, 9], ordered=False) + def test_union_none_slice(self): + qs1 = Number.objects.filter(num__lte=0) + qs2 = Number.objects.none() + qs3 = qs1.union(qs2) + self.assertNumbersEqual(qs3[:1], [0]) + + def test_union_empty_filter_slice(self): + qs1 = Number.objects.filter(num__lte=0) + qs2 = Number.objects.filter(pk__in=[]) + qs3 = qs1.union(qs2) + self.assertNumbersEqual(qs3[:1], [0]) + + @skipUnlessDBFeature("supports_slicing_ordering_in_compound") + def test_union_slice_compound_empty(self): + qs1 = Number.objects.filter(num__lte=0)[:1] + qs2 = Number.objects.none() + qs3 = qs1.union(qs2) + self.assertNumbersEqual(qs3[:1], [0]) + + @skipUnlessDBFeature("supports_slicing_ordering_in_compound") + def test_union_combined_slice_compound_empty(self): + qs1 = Number.objects.filter(num__lte=2)[:3] + qs2 = Number.objects.none() + qs3 = qs1.union(qs2) + self.assertNumbersEqual(qs3.order_by("num")[2:3], [2]) + def test_union_order_with_null_first_last(self): Number.objects.filter(other_num=5).update(other_num=None) qs1 = Number.objects.filter(num__lte=1) |