| import math |
| from decimal import Decimal |
|
|
| from django.db.models.functions import Mod |
| from django.test import TestCase |
|
|
| from ..models import DecimalModel, FloatModel, IntegerModel |
|
|
|
|
| class ModTests(TestCase): |
| def test_null(self): |
| IntegerModel.objects.create(big=100) |
| obj = IntegerModel.objects.annotate( |
| null_mod_small=Mod("small", "normal"), |
| null_mod_normal=Mod("normal", "big"), |
| ).first() |
| self.assertIsNone(obj.null_mod_small) |
| self.assertIsNone(obj.null_mod_normal) |
|
|
| def test_decimal(self): |
| DecimalModel.objects.create(n1=Decimal("-9.9"), n2=Decimal("4.6")) |
| obj = DecimalModel.objects.annotate(n_mod=Mod("n1", "n2")).first() |
| self.assertIsInstance(obj.n_mod, Decimal) |
| self.assertAlmostEqual(obj.n_mod, Decimal(math.fmod(obj.n1, obj.n2))) |
|
|
| def test_float(self): |
| FloatModel.objects.create(f1=-25, f2=0.33) |
| obj = FloatModel.objects.annotate(f_mod=Mod("f1", "f2")).first() |
| self.assertIsInstance(obj.f_mod, float) |
| self.assertAlmostEqual(obj.f_mod, math.fmod(obj.f1, obj.f2)) |
|
|
| def test_integer(self): |
| IntegerModel.objects.create(small=20, normal=15, big=1) |
| obj = IntegerModel.objects.annotate( |
| small_mod=Mod("small", "normal"), |
| normal_mod=Mod("normal", "big"), |
| big_mod=Mod("big", "small"), |
| ).first() |
| self.assertIsInstance(obj.small_mod, float) |
| self.assertIsInstance(obj.normal_mod, float) |
| self.assertIsInstance(obj.big_mod, float) |
| self.assertEqual(obj.small_mod, math.fmod(obj.small, obj.normal)) |
| self.assertEqual(obj.normal_mod, math.fmod(obj.normal, obj.big)) |
| self.assertEqual(obj.big_mod, math.fmod(obj.big, obj.small)) |
|
|
