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Code Issues 32 Releases Wiki Activity

Fixed #17027 -- Added support for the power operator in F expressions.

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Thanks dan at dlo.me for the initial patch.

- Added __pow__ and __rpow__ to ExpressionNode
- Added oracle and mysql specific power expressions
- Added used-defined power function for sqlite
This commit is contained in:
Florian Hahn
2013-02-21 23:02:18 +01:00
committed by Tim Graham
parent 1597503a01
commit 5240b83462
9 changed files with 56 additions and 2 deletions
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14
tests/expressions_regress/tests.py
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@@ -145,6 +145,13 @@ class ExpressionOperatorTests(TestCase):
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 58)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(15.500, places=3))
def test_lefthand_power(self):
# LH Powert arithmetic operation on floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=F('integer') ** 2,
float=F('float') ** 1.5)
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 1764)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(61.02, places=2))
def test_right_hand_addition(self):
# Right hand operators
Number.objects.filter(pk=self.n.pk).update(integer=15 + F('integer'),
@@ -185,6 +192,13 @@ class ExpressionOperatorTests(TestCase):
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 27)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(15.500, places=3))
def test_righthand_power(self):
# RH Powert arithmetic operation on floats and integers
Number.objects.filter(pk=self.n.pk).update(integer=2 ** F('integer'),
float=1.5 ** F('float'))
self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 4398046511104)
self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(536.308, places=3))
class FTimeDeltaTests(TestCase):