django1/tests/regressiontests/model_fields/tests.py

147 lines
5.7 KiB
Python

import datetime
import unittest
import django.test
from django import forms
from django.db import models
from django.core.exceptions import ValidationError
from models import Foo, Bar, Whiz, BigD, BigS, Image
try:
from decimal import Decimal
except ImportError:
from django.utils._decimal import Decimal
# If PIL available, do these tests.
if Image:
from imagefield import \
ImageFieldTests, \
ImageFieldTwoDimensionsTests, \
ImageFieldNoDimensionsTests, \
ImageFieldOneDimensionTests, \
ImageFieldDimensionsFirstTests, \
ImageFieldUsingFileTests, \
TwoImageFieldTests
class DecimalFieldTests(django.test.TestCase):
def test_to_python(self):
f = models.DecimalField(max_digits=4, decimal_places=2)
self.assertEqual(f.to_python(3), Decimal("3"))
self.assertEqual(f.to_python("3.14"), Decimal("3.14"))
self.assertRaises(ValidationError, f.to_python, "abc")
def test_default(self):
f = models.DecimalField(default=Decimal("0.00"))
self.assertEqual(f.get_default(), Decimal("0.00"))
def test_format(self):
f = models.DecimalField(max_digits=5, decimal_places=1)
self.assertEqual(f._format(f.to_python(2)), u'2.0')
self.assertEqual(f._format(f.to_python('2.6')), u'2.6')
self.assertEqual(f._format(None), None)
def test_get_db_prep_lookup(self):
f = models.DecimalField(max_digits=5, decimal_places=1)
self.assertEqual(f.get_db_prep_lookup('exact', None), [None])
def test_filter_with_strings(self):
"""
We should be able to filter decimal fields using strings (#8023)
"""
Foo.objects.create(id=1, a='abc', d=Decimal("12.34"))
self.assertEqual(list(Foo.objects.filter(d=u'1.23')), [])
def test_save_without_float_conversion(self):
"""
Ensure decimals don't go through a corrupting float conversion during
save (#5079).
"""
bd = BigD(d="12.9")
bd.save()
bd = BigD.objects.get(pk=bd.pk)
self.assertEqual(bd.d, Decimal("12.9"))
def test_lookup_really_big_value(self):
"""
Ensure that really big values can be used in a filter statement, even
with older Python versions.
"""
# This should not crash. That counts as a win for our purposes.
Foo.objects.filter(d__gte=100000000000)
class ForeignKeyTests(django.test.TestCase):
def test_callable_default(self):
"""Test the use of a lazy callable for ForeignKey.default"""
a = Foo.objects.create(id=1, a='abc', d=Decimal("12.34"))
b = Bar.objects.create(b="bcd")
self.assertEqual(b.a, a)
class DateTimeFieldTests(unittest.TestCase):
def test_datetimefield_to_python_usecs(self):
"""DateTimeField.to_python should support usecs"""
f = models.DateTimeField()
self.assertEqual(f.to_python('2001-01-02 03:04:05.000006'),
datetime.datetime(2001, 1, 2, 3, 4, 5, 6))
self.assertEqual(f.to_python('2001-01-02 03:04:05.999999'),
datetime.datetime(2001, 1, 2, 3, 4, 5, 999999))
def test_timefield_to_python_usecs(self):
"""TimeField.to_python should support usecs"""
f = models.TimeField()
self.assertEqual(f.to_python('01:02:03.000004'),
datetime.time(1, 2, 3, 4))
self.assertEqual(f.to_python('01:02:03.999999'),
datetime.time(1, 2, 3, 999999))
class BooleanFieldTests(unittest.TestCase):
def _test_get_db_prep_lookup(self, f):
self.assertEqual(f.get_db_prep_lookup('exact', True), [True])
self.assertEqual(f.get_db_prep_lookup('exact', '1'), [True])
self.assertEqual(f.get_db_prep_lookup('exact', 1), [True])
self.assertEqual(f.get_db_prep_lookup('exact', False), [False])
self.assertEqual(f.get_db_prep_lookup('exact', '0'), [False])
self.assertEqual(f.get_db_prep_lookup('exact', 0), [False])
self.assertEqual(f.get_db_prep_lookup('exact', None), [None])
def test_booleanfield_get_db_prep_lookup(self):
self._test_get_db_prep_lookup(models.BooleanField())
def test_nullbooleanfield_get_db_prep_lookup(self):
self._test_get_db_prep_lookup(models.NullBooleanField())
def test_booleanfield_choices_blank(self):
"""
Test that BooleanField with choices and defaults doesn't generate a
formfield with the blank option (#9640, #10549).
"""
choices = [(1, u'Si'), (2, 'No')]
f = models.BooleanField(choices=choices, default=1, null=True)
self.assertEqual(f.formfield().choices, [('', '---------')] + choices)
f = models.BooleanField(choices=choices, default=1, null=False)
self.assertEqual(f.formfield().choices, choices)
class ChoicesTests(django.test.TestCase):
def test_choices_and_field_display(self):
"""
Check that get_choices and get_flatchoices interact with
get_FIELD_display to return the expected values (#7913).
"""
self.assertEqual(Whiz(c=1).get_c_display(), 'First') # A nested value
self.assertEqual(Whiz(c=0).get_c_display(), 'Other') # A top level value
self.assertEqual(Whiz(c=9).get_c_display(), 9) # Invalid value
self.assertEqual(Whiz(c=None).get_c_display(), None) # Blank value
self.assertEqual(Whiz(c='').get_c_display(), '') # Empty value
class SlugFieldTests(django.test.TestCase):
def test_slugfield_max_length(self):
"""
Make sure SlugField honors max_length (#9706)
"""
bs = BigS.objects.create(s = 'slug'*50)
bs = BigS.objects.get(pk=bs.pk)
self.assertEqual(bs.s, 'slug'*50)