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417 lines
16 KiB
Python
417 lines
16 KiB
Python
from __future__ import absolute_import, unicode_literals
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import datetime
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from decimal import Decimal
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from django import test
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from django import forms
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from django.core.exceptions import ValidationError
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from django.db import models
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from django.db.models.fields.files import FieldFile
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from django.utils import six
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from django.utils import unittest
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from .models import (Foo, Bar, Whiz, BigD, BigS, Image, BigInt, Post,
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NullBooleanModel, BooleanModel, Document, RenamedField, VerboseNameField,
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FksToBooleans)
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from .imagefield import (ImageFieldTests, ImageFieldTwoDimensionsTests,
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TwoImageFieldTests, ImageFieldNoDimensionsTests,
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ImageFieldOneDimensionTests, ImageFieldDimensionsFirstTests,
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ImageFieldUsingFileTests)
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class BasicFieldTests(test.TestCase):
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def test_show_hidden_initial(self):
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"""
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Regression test for #12913. Make sure fields with choices respect
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show_hidden_initial as a kwarg to models.Field.formfield()
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"""
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choices = [(0, 0), (1, 1)]
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model_field = models.Field(choices=choices)
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form_field = model_field.formfield(show_hidden_initial=True)
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self.assertTrue(form_field.show_hidden_initial)
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form_field = model_field.formfield(show_hidden_initial=False)
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self.assertFalse(form_field.show_hidden_initial)
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def test_nullbooleanfield_blank(self):
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"""
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Regression test for #13071: NullBooleanField should not throw
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a validation error when given a value of None.
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"""
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nullboolean = NullBooleanModel(nbfield=None)
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try:
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nullboolean.full_clean()
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except ValidationError as e:
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self.fail("NullBooleanField failed validation with value of None: %s" % e.messages)
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def test_field_repr(self):
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"""
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Regression test for #5931: __repr__ of a field also displays its name
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"""
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f = Foo._meta.get_field('a')
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self.assertEqual(repr(f), '<django.db.models.fields.CharField: a>')
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f = models.fields.CharField()
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self.assertEqual(repr(f), '<django.db.models.fields.CharField>')
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def test_field_name(self):
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"""
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Regression test for #14695: explicitly defined field name overwritten
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by model's attribute name.
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"""
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instance = RenamedField()
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self.assertTrue(hasattr(instance, 'get_fieldname_display'))
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self.assertFalse(hasattr(instance, 'get_modelname_display'))
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def test_field_verbose_name(self):
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m = VerboseNameField
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for i in range(1, 23):
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self.assertEqual(m._meta.get_field('field%d' % i).verbose_name,
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'verbose field%d' % i)
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self.assertEqual(m._meta.get_field('id').verbose_name, 'verbose pk')
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class DecimalFieldTests(test.TestCase):
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def test_to_python(self):
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f = models.DecimalField(max_digits=4, decimal_places=2)
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self.assertEqual(f.to_python(3), Decimal("3"))
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self.assertEqual(f.to_python("3.14"), Decimal("3.14"))
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self.assertRaises(ValidationError, f.to_python, "abc")
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def test_default(self):
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f = models.DecimalField(default=Decimal("0.00"))
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self.assertEqual(f.get_default(), Decimal("0.00"))
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def test_format(self):
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f = models.DecimalField(max_digits=5, decimal_places=1)
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self.assertEqual(f._format(f.to_python(2)), '2.0')
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self.assertEqual(f._format(f.to_python('2.6')), '2.6')
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self.assertEqual(f._format(None), None)
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def test_get_db_prep_lookup(self):
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from django.db import connection
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f = models.DecimalField(max_digits=5, decimal_places=1)
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self.assertEqual(f.get_db_prep_lookup('exact', None, connection=connection), [None])
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def test_filter_with_strings(self):
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"""
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We should be able to filter decimal fields using strings (#8023)
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"""
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Foo.objects.create(id=1, a='abc', d=Decimal("12.34"))
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self.assertEqual(list(Foo.objects.filter(d='1.23')), [])
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def test_save_without_float_conversion(self):
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"""
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Ensure decimals don't go through a corrupting float conversion during
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save (#5079).
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"""
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bd = BigD(d="12.9")
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bd.save()
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bd = BigD.objects.get(pk=bd.pk)
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self.assertEqual(bd.d, Decimal("12.9"))
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def test_lookup_really_big_value(self):
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"""
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Ensure that really big values can be used in a filter statement, even
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with older Python versions.
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"""
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# This should not crash. That counts as a win for our purposes.
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Foo.objects.filter(d__gte=100000000000)
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class ForeignKeyTests(test.TestCase):
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def test_callable_default(self):
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"""Test the use of a lazy callable for ForeignKey.default"""
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a = Foo.objects.create(id=1, a='abc', d=Decimal("12.34"))
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b = Bar.objects.create(b="bcd")
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self.assertEqual(b.a, a)
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class DateTimeFieldTests(unittest.TestCase):
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def test_datetimefield_to_python_usecs(self):
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"""DateTimeField.to_python should support usecs"""
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f = models.DateTimeField()
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self.assertEqual(f.to_python('2001-01-02 03:04:05.000006'),
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datetime.datetime(2001, 1, 2, 3, 4, 5, 6))
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self.assertEqual(f.to_python('2001-01-02 03:04:05.999999'),
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datetime.datetime(2001, 1, 2, 3, 4, 5, 999999))
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def test_timefield_to_python_usecs(self):
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"""TimeField.to_python should support usecs"""
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f = models.TimeField()
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self.assertEqual(f.to_python('01:02:03.000004'),
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datetime.time(1, 2, 3, 4))
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self.assertEqual(f.to_python('01:02:03.999999'),
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datetime.time(1, 2, 3, 999999))
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class BooleanFieldTests(unittest.TestCase):
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def _test_get_db_prep_lookup(self, f):
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from django.db import connection
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self.assertEqual(f.get_db_prep_lookup('exact', True, connection=connection), [True])
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self.assertEqual(f.get_db_prep_lookup('exact', '1', connection=connection), [True])
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self.assertEqual(f.get_db_prep_lookup('exact', 1, connection=connection), [True])
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self.assertEqual(f.get_db_prep_lookup('exact', False, connection=connection), [False])
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self.assertEqual(f.get_db_prep_lookup('exact', '0', connection=connection), [False])
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self.assertEqual(f.get_db_prep_lookup('exact', 0, connection=connection), [False])
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self.assertEqual(f.get_db_prep_lookup('exact', None, connection=connection), [None])
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def _test_to_python(self, f):
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self.assertTrue(f.to_python(1) is True)
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self.assertTrue(f.to_python(0) is False)
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def test_booleanfield_get_db_prep_lookup(self):
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self._test_get_db_prep_lookup(models.BooleanField())
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def test_nullbooleanfield_get_db_prep_lookup(self):
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self._test_get_db_prep_lookup(models.NullBooleanField())
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def test_booleanfield_to_python(self):
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self._test_to_python(models.BooleanField())
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def test_nullbooleanfield_to_python(self):
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self._test_to_python(models.NullBooleanField())
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def test_booleanfield_choices_blank(self):
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"""
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Test that BooleanField with choices and defaults doesn't generate a
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formfield with the blank option (#9640, #10549).
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"""
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choices = [(1, 'Si'), (2, 'No')]
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f = models.BooleanField(choices=choices, default=1, null=True)
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self.assertEqual(f.formfield().choices, [('', '---------')] + choices)
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f = models.BooleanField(choices=choices, default=1, null=False)
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self.assertEqual(f.formfield().choices, choices)
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def test_return_type(self):
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b = BooleanModel()
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b.bfield = True
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b.save()
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b2 = BooleanModel.objects.get(pk=b.pk)
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self.assertTrue(isinstance(b2.bfield, bool))
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self.assertEqual(b2.bfield, True)
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b3 = BooleanModel()
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b3.bfield = False
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b3.save()
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b4 = BooleanModel.objects.get(pk=b3.pk)
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self.assertTrue(isinstance(b4.bfield, bool))
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self.assertEqual(b4.bfield, False)
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b = NullBooleanModel()
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b.nbfield = True
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b.save()
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b2 = NullBooleanModel.objects.get(pk=b.pk)
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self.assertTrue(isinstance(b2.nbfield, bool))
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self.assertEqual(b2.nbfield, True)
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b3 = NullBooleanModel()
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b3.nbfield = False
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b3.save()
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b4 = NullBooleanModel.objects.get(pk=b3.pk)
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self.assertTrue(isinstance(b4.nbfield, bool))
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self.assertEqual(b4.nbfield, False)
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# http://code.djangoproject.com/ticket/13293
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# Verify that when an extra clause exists, the boolean
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# conversions are applied with an offset
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b5 = BooleanModel.objects.all().extra(
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select={'string_col': 'string'})[0]
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self.assertFalse(isinstance(b5.pk, bool))
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def test_select_related(self):
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"""
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Test type of boolean fields when retrieved via select_related() (MySQL,
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#15040)
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"""
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bmt = BooleanModel.objects.create(bfield=True)
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bmf = BooleanModel.objects.create(bfield=False)
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nbmt = NullBooleanModel.objects.create(nbfield=True)
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nbmf = NullBooleanModel.objects.create(nbfield=False)
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m1 = FksToBooleans.objects.create(bf=bmt, nbf=nbmt)
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m2 = FksToBooleans.objects.create(bf=bmf, nbf=nbmf)
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# Test select_related('fk_field_name')
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ma = FksToBooleans.objects.select_related('bf').get(pk=m1.id)
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# verify types -- should't be 0/1
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self.assertIsInstance(ma.bf.bfield, bool)
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self.assertIsInstance(ma.nbf.nbfield, bool)
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# verify values
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self.assertEqual(ma.bf.bfield, True)
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self.assertEqual(ma.nbf.nbfield, True)
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# Test select_related()
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mb = FksToBooleans.objects.select_related().get(pk=m1.id)
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mc = FksToBooleans.objects.select_related().get(pk=m2.id)
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# verify types -- shouldn't be 0/1
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self.assertIsInstance(mb.bf.bfield, bool)
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self.assertIsInstance(mb.nbf.nbfield, bool)
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self.assertIsInstance(mc.bf.bfield, bool)
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self.assertIsInstance(mc.nbf.nbfield, bool)
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# verify values
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self.assertEqual(mb.bf.bfield, True)
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self.assertEqual(mb.nbf.nbfield, True)
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self.assertEqual(mc.bf.bfield, False)
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self.assertEqual(mc.nbf.nbfield, False)
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class ChoicesTests(test.TestCase):
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def test_choices_and_field_display(self):
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"""
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Check that get_choices and get_flatchoices interact with
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get_FIELD_display to return the expected values (#7913).
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"""
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self.assertEqual(Whiz(c=1).get_c_display(), 'First') # A nested value
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self.assertEqual(Whiz(c=0).get_c_display(), 'Other') # A top level value
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self.assertEqual(Whiz(c=9).get_c_display(), 9) # Invalid value
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self.assertEqual(Whiz(c=None).get_c_display(), None) # Blank value
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self.assertEqual(Whiz(c='').get_c_display(), '') # Empty value
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class SlugFieldTests(test.TestCase):
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def test_slugfield_max_length(self):
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"""
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Make sure SlugField honors max_length (#9706)
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"""
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bs = BigS.objects.create(s = 'slug'*50)
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bs = BigS.objects.get(pk=bs.pk)
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self.assertEqual(bs.s, 'slug'*50)
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class ValidationTest(test.TestCase):
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def test_charfield_raises_error_on_empty_string(self):
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f = models.CharField()
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self.assertRaises(ValidationError, f.clean, "", None)
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def test_charfield_cleans_empty_string_when_blank_true(self):
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f = models.CharField(blank=True)
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self.assertEqual('', f.clean('', None))
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def test_integerfield_cleans_valid_string(self):
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f = models.IntegerField()
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self.assertEqual(2, f.clean('2', None))
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def test_integerfield_raises_error_on_invalid_intput(self):
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f = models.IntegerField()
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self.assertRaises(ValidationError, f.clean, "a", None)
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def test_charfield_with_choices_cleans_valid_choice(self):
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f = models.CharField(max_length=1, choices=[('a','A'), ('b','B')])
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self.assertEqual('a', f.clean('a', None))
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def test_charfield_with_choices_raises_error_on_invalid_choice(self):
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f = models.CharField(choices=[('a','A'), ('b','B')])
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self.assertRaises(ValidationError, f.clean, "not a", None)
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def test_choices_validation_supports_named_groups(self):
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f = models.IntegerField(choices=(('group',((10,'A'),(20,'B'))),(30,'C')))
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self.assertEqual(10, f.clean(10, None))
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def test_nullable_integerfield_raises_error_with_blank_false(self):
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f = models.IntegerField(null=True, blank=False)
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self.assertRaises(ValidationError, f.clean, None, None)
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def test_nullable_integerfield_cleans_none_on_null_and_blank_true(self):
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f = models.IntegerField(null=True, blank=True)
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self.assertEqual(None, f.clean(None, None))
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def test_integerfield_raises_error_on_empty_input(self):
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f = models.IntegerField(null=False)
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self.assertRaises(ValidationError, f.clean, None, None)
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self.assertRaises(ValidationError, f.clean, '', None)
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def test_integerfield_validates_zero_against_choices(self):
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f = models.IntegerField(choices=((1, 1),))
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self.assertRaises(ValidationError, f.clean, '0', None)
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def test_charfield_raises_error_on_empty_input(self):
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f = models.CharField(null=False)
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self.assertRaises(ValidationError, f.clean, None, None)
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def test_datefield_cleans_date(self):
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f = models.DateField()
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self.assertEqual(datetime.date(2008, 10, 10), f.clean('2008-10-10', None))
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def test_boolean_field_doesnt_accept_empty_input(self):
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f = models.BooleanField()
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self.assertRaises(ValidationError, f.clean, None, None)
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class BigIntegerFieldTests(test.TestCase):
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def test_limits(self):
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# Ensure that values that are right at the limits can be saved
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# and then retrieved without corruption.
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maxval = 9223372036854775807
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minval = -maxval - 1
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BigInt.objects.create(value=maxval)
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qs = BigInt.objects.filter(value__gte=maxval)
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self.assertEqual(qs.count(), 1)
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self.assertEqual(qs[0].value, maxval)
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BigInt.objects.create(value=minval)
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qs = BigInt.objects.filter(value__lte=minval)
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self.assertEqual(qs.count(), 1)
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self.assertEqual(qs[0].value, minval)
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def test_types(self):
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b = BigInt(value = 0)
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self.assertTrue(isinstance(b.value, six.integer_types))
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b.save()
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self.assertTrue(isinstance(b.value, six.integer_types))
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b = BigInt.objects.all()[0]
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self.assertTrue(isinstance(b.value, six.integer_types))
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def test_coercing(self):
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BigInt.objects.create(value ='10')
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b = BigInt.objects.get(value = '10')
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self.assertEqual(b.value, 10)
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class TypeCoercionTests(test.TestCase):
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"""
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Test that database lookups can accept the wrong types and convert
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them with no error: especially on Postgres 8.3+ which does not do
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automatic casting at the DB level. See #10015.
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"""
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def test_lookup_integer_in_charfield(self):
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self.assertEqual(Post.objects.filter(title=9).count(), 0)
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def test_lookup_integer_in_textfield(self):
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self.assertEqual(Post.objects.filter(body=24).count(), 0)
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class FileFieldTests(unittest.TestCase):
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def test_clearable(self):
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"""
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Test that FileField.save_form_data will clear its instance attribute
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value if passed False.
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"""
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d = Document(myfile='something.txt')
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self.assertEqual(d.myfile, 'something.txt')
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field = d._meta.get_field('myfile')
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field.save_form_data(d, False)
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self.assertEqual(d.myfile, '')
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def test_unchanged(self):
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"""
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Test that FileField.save_form_data considers None to mean "no change"
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rather than "clear".
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"""
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d = Document(myfile='something.txt')
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self.assertEqual(d.myfile, 'something.txt')
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field = d._meta.get_field('myfile')
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field.save_form_data(d, None)
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self.assertEqual(d.myfile, 'something.txt')
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def test_changed(self):
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"""
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Test that FileField.save_form_data, if passed a truthy value, updates
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its instance attribute.
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"""
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d = Document(myfile='something.txt')
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self.assertEqual(d.myfile, 'something.txt')
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field = d._meta.get_field('myfile')
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field.save_form_data(d, 'else.txt')
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self.assertEqual(d.myfile, 'else.txt')
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