django1/tests/db_functions/math/test_ceil.py

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import math
from decimal import Decimal
from django.db.models import DecimalField
from django.db.models.functions import Ceil
from django.test import TestCase
from django.test.utils import register_lookup
from ..models import DecimalModel, FloatModel, IntegerModel
class CeilTests(TestCase):
def test_null(self):
IntegerModel.objects.create()
obj = IntegerModel.objects.annotate(null_ceil=Ceil('normal')).first()
self.assertIsNone(obj.null_ceil)
def test_decimal(self):
DecimalModel.objects.create(n1=Decimal('12.9'), n2=Decimal('0.6'))
obj = DecimalModel.objects.annotate(n1_ceil=Ceil('n1'), n2_ceil=Ceil('n2')).first()
self.assertIsInstance(obj.n1_ceil, Decimal)
self.assertIsInstance(obj.n2_ceil, Decimal)
self.assertEqual(obj.n1_ceil, Decimal(math.ceil(obj.n1)))
self.assertEqual(obj.n2_ceil, Decimal(math.ceil(obj.n2)))
def test_float(self):
FloatModel.objects.create(f1=-12.5, f2=21.33)
obj = FloatModel.objects.annotate(f1_ceil=Ceil('f1'), f2_ceil=Ceil('f2')).first()
self.assertIsInstance(obj.f1_ceil, float)
self.assertIsInstance(obj.f2_ceil, float)
self.assertEqual(obj.f1_ceil, math.ceil(obj.f1))
self.assertEqual(obj.f2_ceil, math.ceil(obj.f2))
def test_integer(self):
IntegerModel.objects.create(small=-11, normal=0, big=-100)
obj = IntegerModel.objects.annotate(
small_ceil=Ceil('small'),
normal_ceil=Ceil('normal'),
big_ceil=Ceil('big'),
).first()
self.assertIsInstance(obj.small_ceil, int)
self.assertIsInstance(obj.normal_ceil, int)
self.assertIsInstance(obj.big_ceil, int)
self.assertEqual(obj.small_ceil, math.ceil(obj.small))
self.assertEqual(obj.normal_ceil, math.ceil(obj.normal))
self.assertEqual(obj.big_ceil, math.ceil(obj.big))
def test_transform(self):
with register_lookup(DecimalField, Ceil):
DecimalModel.objects.create(n1=Decimal('3.12'), n2=Decimal('0'))
DecimalModel.objects.create(n1=Decimal('1.25'), n2=Decimal('0'))
objs = DecimalModel.objects.filter(n1__ceil__gt=3)
self.assertQuerysetEqual(objs, [Decimal('3.12')], lambda a: a.n1)