mirror of
https://github.com/django/django.git
synced 2024-12-23 17:46:27 +00:00
55 lines
2.2 KiB
Python
55 lines
2.2 KiB
Python
import math
|
|
from decimal import Decimal
|
|
|
|
from django.db.models import DecimalField
|
|
from django.db.models.functions import Cot
|
|
from django.test import TestCase
|
|
from django.test.utils import register_lookup
|
|
|
|
from ..models import DecimalModel, FloatModel, IntegerModel
|
|
|
|
|
|
class CotTests(TestCase):
|
|
|
|
def test_null(self):
|
|
IntegerModel.objects.create()
|
|
obj = IntegerModel.objects.annotate(null_cot=Cot('normal')).first()
|
|
self.assertIsNone(obj.null_cot)
|
|
|
|
def test_decimal(self):
|
|
DecimalModel.objects.create(n1=Decimal('-12.9'), n2=Decimal('0.6'))
|
|
obj = DecimalModel.objects.annotate(n1_cot=Cot('n1'), n2_cot=Cot('n2')).first()
|
|
self.assertIsInstance(obj.n1_cot, Decimal)
|
|
self.assertIsInstance(obj.n2_cot, Decimal)
|
|
self.assertAlmostEqual(obj.n1_cot, Decimal(1 / math.tan(obj.n1)))
|
|
self.assertAlmostEqual(obj.n2_cot, Decimal(1 / math.tan(obj.n2)))
|
|
|
|
def test_float(self):
|
|
FloatModel.objects.create(f1=-27.5, f2=0.33)
|
|
obj = FloatModel.objects.annotate(f1_cot=Cot('f1'), f2_cot=Cot('f2')).first()
|
|
self.assertIsInstance(obj.f1_cot, float)
|
|
self.assertIsInstance(obj.f2_cot, float)
|
|
self.assertAlmostEqual(obj.f1_cot, 1 / math.tan(obj.f1))
|
|
self.assertAlmostEqual(obj.f2_cot, 1 / math.tan(obj.f2))
|
|
|
|
def test_integer(self):
|
|
IntegerModel.objects.create(small=-5, normal=15, big=-1)
|
|
obj = IntegerModel.objects.annotate(
|
|
small_cot=Cot('small'),
|
|
normal_cot=Cot('normal'),
|
|
big_cot=Cot('big'),
|
|
).first()
|
|
self.assertIsInstance(obj.small_cot, float)
|
|
self.assertIsInstance(obj.normal_cot, float)
|
|
self.assertIsInstance(obj.big_cot, float)
|
|
self.assertAlmostEqual(obj.small_cot, 1 / math.tan(obj.small))
|
|
self.assertAlmostEqual(obj.normal_cot, 1 / math.tan(obj.normal))
|
|
self.assertAlmostEqual(obj.big_cot, 1 / math.tan(obj.big))
|
|
|
|
def test_transform(self):
|
|
with register_lookup(DecimalField, Cot):
|
|
DecimalModel.objects.create(n1=Decimal('12.0'), n2=Decimal('0'))
|
|
DecimalModel.objects.create(n1=Decimal('1.0'), n2=Decimal('0'))
|
|
obj = DecimalModel.objects.filter(n1__cot__gt=0).get()
|
|
self.assertEqual(obj.n1, Decimal('1.0'))
|