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52 lines
2.2 KiB
Python
52 lines
2.2 KiB
Python
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import math
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from decimal import Decimal
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from django.db.models import DecimalField
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from django.db.models.functions import Degrees
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from django.test import TestCase
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from ..models import DecimalModel, FloatModel, IntegerModel
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class DegreesTests(TestCase):
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def test_decimal(self):
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DecimalModel.objects.create(n1=Decimal('-12.9'), n2=Decimal('0.6'))
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obj = DecimalModel.objects.annotate(n1_degrees=Degrees('n1'), n2_degrees=Degrees('n2')).first()
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self.assertIsInstance(obj.n1_degrees, Decimal)
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self.assertIsInstance(obj.n2_degrees, Decimal)
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self.assertAlmostEqual(obj.n1_degrees, Decimal(math.degrees(obj.n1)))
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self.assertAlmostEqual(obj.n2_degrees, Decimal(math.degrees(obj.n2)))
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def test_float(self):
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FloatModel.objects.create(f1=-27.5, f2=0.33)
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obj = FloatModel.objects.annotate(f1_degrees=Degrees('f1'), f2_degrees=Degrees('f2')).first()
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self.assertIsInstance(obj.f1_degrees, float)
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self.assertIsInstance(obj.f2_degrees, float)
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self.assertAlmostEqual(obj.f1_degrees, math.degrees(obj.f1))
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self.assertAlmostEqual(obj.f2_degrees, math.degrees(obj.f2))
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def test_integer(self):
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IntegerModel.objects.create(small=-20, normal=15, big=-1)
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obj = IntegerModel.objects.annotate(
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small_degrees=Degrees('small'),
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normal_degrees=Degrees('normal'),
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big_degrees=Degrees('big'),
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).first()
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self.assertIsInstance(obj.small_degrees, float)
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self.assertIsInstance(obj.normal_degrees, float)
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self.assertIsInstance(obj.big_degrees, float)
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self.assertAlmostEqual(obj.small_degrees, math.degrees(obj.small))
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self.assertAlmostEqual(obj.normal_degrees, math.degrees(obj.normal))
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self.assertAlmostEqual(obj.big_degrees, math.degrees(obj.big))
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def test_transform(self):
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try:
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DecimalField.register_lookup(Degrees)
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DecimalModel.objects.create(n1=Decimal('5.4'), n2=Decimal('0'))
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DecimalModel.objects.create(n1=Decimal('-30'), n2=Decimal('0'))
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objs = DecimalModel.objects.filter(n1__degrees__gt=0)
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self.assertQuerysetEqual(objs, [Decimal('5.4')], lambda a: a.n1)
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finally:
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DecimalField._unregister_lookup(Degrees)
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