mirror of
https://github.com/django/django.git
synced 2025-10-31 09:41:08 +00:00
25 lines
867 B
Python
25 lines
867 B
Python
from django.db import models
|
|
from django.db.models.expressions import Value
|
|
from django.db.models.functions import Cast
|
|
from django.test import TestCase
|
|
|
|
from .models import Author
|
|
|
|
|
|
class CastTests(TestCase):
|
|
@classmethod
|
|
def setUpTestData(self):
|
|
Author.objects.create(name='Bob', age=1)
|
|
|
|
def test_cast_from_value(self):
|
|
numbers = Author.objects.annotate(cast_integer=Cast(Value('0'), models.IntegerField()))
|
|
self.assertEqual(numbers.get().cast_integer, 0)
|
|
|
|
def test_cast_from_field(self):
|
|
numbers = Author.objects.annotate(cast_string=Cast('age', models.CharField(max_length=255)),)
|
|
self.assertEqual(numbers.get().cast_string, '1')
|
|
|
|
def test_cast_from_python(self):
|
|
numbers = Author.objects.annotate(cast_float=Cast(0, models.FloatField()))
|
|
self.assertEqual(numbers.get().cast_float, 0.0)
|