mirror of https://github.com/django/django.git
52 lines
2.1 KiB
Python
52 lines
2.1 KiB
Python
|
import math
|
||
|
|
from decimal import Decimal
|
||
|
|
|
||
|
|
from django.db.models import DecimalField
|
||
|
|
from django.db.models.functions import Sin
|
||
|
|
from django.test import TestCase
|
||
|
|
|
||
|
|
from ..models import DecimalModel, FloatModel, IntegerModel
|
||
|
|
|
||
|
|
|
||
|
|
class SinTests(TestCase):
|
||
|
|
|
||
|
|
def test_decimal(self):
|
||
|
|
DecimalModel.objects.create(n1=Decimal('-12.9'), n2=Decimal('0.6'))
|
||
|
|
obj = DecimalModel.objects.annotate(n1_sin=Sin('n1'), n2_sin=Sin('n2')).first()
|
||
|
|
self.assertIsInstance(obj.n1_sin, Decimal)
|
||
|
|
self.assertIsInstance(obj.n2_sin, Decimal)
|
||
|
|
self.assertAlmostEqual(obj.n1_sin, Decimal(math.sin(obj.n1)))
|
||
|
|
self.assertAlmostEqual(obj.n2_sin, Decimal(math.sin(obj.n2)))
|
||
|
|
|
||
|
|
def test_float(self):
|
||
|
|
FloatModel.objects.create(f1=-27.5, f2=0.33)
|
||
|
|
obj = FloatModel.objects.annotate(f1_sin=Sin('f1'), f2_sin=Sin('f2')).first()
|
||
|
|
self.assertIsInstance(obj.f1_sin, float)
|
||
|
|
self.assertIsInstance(obj.f2_sin, float)
|
||
|
|
self.assertAlmostEqual(obj.f1_sin, math.sin(obj.f1))
|
||
|
|
self.assertAlmostEqual(obj.f2_sin, math.sin(obj.f2))
|
||
|
|
|
||
|
|
def test_integer(self):
|
||
|
|
IntegerModel.objects.create(small=-20, normal=15, big=-1)
|
||
|
|
obj = IntegerModel.objects.annotate(
|
||
|
|
small_sin=Sin('small'),
|
||
|
|
normal_sin=Sin('normal'),
|
||
|
|
big_sin=Sin('big'),
|
||
|
|
).first()
|
||
|
|
self.assertIsInstance(obj.small_sin, float)
|
||
|
|
self.assertIsInstance(obj.normal_sin, float)
|
||
|
|
self.assertIsInstance(obj.big_sin, float)
|
||
|
|
self.assertAlmostEqual(obj.small_sin, math.sin(obj.small))
|
||
|
|
self.assertAlmostEqual(obj.normal_sin, math.sin(obj.normal))
|
||
|
|
self.assertAlmostEqual(obj.big_sin, math.sin(obj.big))
|
||
|
|
|
||
|
|
def test_transform(self):
|
||
|
|
try:
|
||
|
|
DecimalField.register_lookup(Sin)
|
||
|
|
DecimalModel.objects.create(n1=Decimal('5.4'), n2=Decimal('0'))
|
||
|
|
DecimalModel.objects.create(n1=Decimal('0.1'), n2=Decimal('0'))
|
||
|
|
objs = DecimalModel.objects.filter(n1__sin__lt=0)
|
||
|
|
self.assertQuerysetEqual(objs, [Decimal('5.4')], lambda a: a.n1)
|
||
|
|
finally:
|
||
|
|
DecimalField._unregister_lookup(Sin)
|