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Code Issues 32 Releases Wiki Activity

Fixed #16211 -- Added logical NOT support to F expressions.

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This commit is contained in:
David Wobrock
2022-09-26 22:59:25 +02:00
committed by Mariusz Felisiak
parent c01e76c95c
commit a320aab512
7 changed files with 164 additions and 29 deletions
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56
tests/expressions/tests.py
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@@ -48,6 +48,7 @@ from django.db.models.expressions import (
Col,
Combinable,
CombinedExpression,
NegatedExpression,
RawSQL,
Ref,
)
@@ -2536,6 +2537,61 @@ class ExpressionWrapperTests(SimpleTestCase):
self.assertEqual(group_by_cols[0].output_field, expr.output_field)
class NegatedExpressionTests(TestCase):
@classmethod
def setUpTestData(cls):
ceo = Employee.objects.create(firstname="Joe", lastname="Smith", salary=10)
cls.eu_company = Company.objects.create(
name="Example Inc.",
num_employees=2300,
num_chairs=5,
ceo=ceo,
based_in_eu=True,
)
cls.non_eu_company = Company.objects.create(
name="Foobar Ltd.",
num_employees=3,
num_chairs=4,
ceo=ceo,
based_in_eu=False,
)
def test_invert(self):
f = F("field")
self.assertEqual(~f, NegatedExpression(f))
self.assertIsNot(~~f, f)
self.assertEqual(~~f, f)
def test_filter(self):
self.assertSequenceEqual(
Company.objects.filter(~F("based_in_eu")),
[self.non_eu_company],
)
qs = Company.objects.annotate(eu_required=~Value(False))
self.assertSequenceEqual(
qs.filter(based_in_eu=F("eu_required")).order_by("eu_required"),
[self.eu_company],
)
self.assertSequenceEqual(
qs.filter(based_in_eu=~~F("eu_required")),
[self.eu_company],
)
self.assertSequenceEqual(
qs.filter(based_in_eu=~F("eu_required")),
[self.non_eu_company],
)
self.assertSequenceEqual(qs.filter(based_in_eu=~F("based_in_eu")), [])
def test_values(self):
self.assertSequenceEqual(
Company.objects.annotate(negated=~F("based_in_eu"))
.values_list("name", "negated")
.order_by("name"),
[("Example Inc.", False), ("Foobar Ltd.", True)],
)
class OrderByTests(SimpleTestCase):
def test_equal(self):
self.assertEqual(