# -*- coding: utf-8 -*- from __future__ import unicode_literals import datetime import unittest from decimal import Decimal from django import forms, test from django.apps import apps from django.core import checks, validators from django.core.exceptions import ValidationError from django.db import IntegrityError, connection, models, transaction from django.db.models.fields import ( NOT_PROVIDED, AutoField, BigIntegerField, BinaryField, BooleanField, CharField, CommaSeparatedIntegerField, DateField, DateTimeField, DecimalField, EmailField, FilePathField, FloatField, GenericIPAddressField, IntegerField, IPAddressField, NullBooleanField, PositiveIntegerField, PositiveSmallIntegerField, SlugField, SmallIntegerField, TextField, TimeField, URLField, ) from django.db.models.fields.files import FileField, ImageField from django.test.utils import isolate_apps, requires_tz_support from django.utils import six, timezone from django.utils.encoding import force_str from django.utils.functional import lazy from .models import ( Bar, BigD, BigIntegerModel, BigS, BooleanModel, DataModel, DateTimeModel, Document, FksToBooleans, FkToChar, FloatModel, Foo, GenericIPAddress, IntegerModel, NullBooleanModel, PositiveIntegerModel, PositiveSmallIntegerModel, Post, PrimaryKeyCharModel, RenamedField, SmallIntegerModel, UnicodeSlugField, VerboseNameField, Whiz, WhizIter, WhizIterEmpty, ) class BasicFieldTests(test.TestCase): def test_show_hidden_initial(self): """ Regression test for #12913. Make sure fields with choices respect show_hidden_initial as a kwarg to models.Field.formfield() """ choices = [(0, 0), (1, 1)] model_field = models.Field(choices=choices) form_field = model_field.formfield(show_hidden_initial=True) self.assertTrue(form_field.show_hidden_initial) form_field = model_field.formfield(show_hidden_initial=False) self.assertFalse(form_field.show_hidden_initial) def test_nullbooleanfield_blank(self): """ Regression test for #13071: NullBooleanField should not throw a validation error when given a value of None. """ nullboolean = NullBooleanModel(nbfield=None) try: nullboolean.full_clean() except ValidationError as e: self.fail("NullBooleanField failed validation with value of None: %s" % e.messages) def test_field_repr(self): """ Regression test for #5931: __repr__ of a field also displays its name """ f = Foo._meta.get_field('a') self.assertEqual(repr(f), '') f = models.fields.CharField() self.assertEqual(repr(f), '') def test_field_name(self): """ Regression test for #14695: explicitly defined field name overwritten by model's attribute name. """ instance = RenamedField() self.assertTrue(hasattr(instance, 'get_fieldname_display')) self.assertFalse(hasattr(instance, 'get_modelname_display')) def test_field_verbose_name(self): m = VerboseNameField for i in range(1, 24): self.assertEqual(m._meta.get_field('field%d' % i).verbose_name, 'verbose field%d' % i) self.assertEqual(m._meta.get_field('id').verbose_name, 'verbose pk') def test_float_validates_object(self): instance = FloatModel(size=2.5) # Try setting float field to unsaved object instance.size = instance with transaction.atomic(): with self.assertRaises(TypeError): instance.save() # Set value to valid and save instance.size = 2.5 instance.save() self.assertTrue(instance.id) # Set field to object on saved instance instance.size = instance msg = ( "Tried to update field model_fields.FloatModel.size with a model " "instance, . Use a value " "compatible with FloatField." ) with transaction.atomic(): with self.assertRaisesMessage(TypeError, msg): instance.save() # Try setting field to object on retrieved object obj = FloatModel.objects.get(pk=instance.id) obj.size = obj with self.assertRaises(TypeError): obj.save() def test_choices_form_class(self): """Can supply a custom choices form class. Regression for #20999.""" choices = [('a', 'a')] field = models.CharField(choices=choices) klass = forms.TypedMultipleChoiceField self.assertIsInstance(field.formfield(choices_form_class=klass), klass) def test_field_str(self): f = Foo._meta.get_field('a') self.assertEqual(force_str(f), "model_fields.Foo.a") class DecimalFieldTests(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")) with 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)), '2.0') self.assertEqual(f._format(f.to_python('2.6')), '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, connection=connection), [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='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) def test_max_digits_validation(self): field = models.DecimalField(max_digits=2) expected_message = validators.DecimalValidator.messages['max_digits'] % {'max': 2} with self.assertRaisesMessage(ValidationError, expected_message): field.clean(100, None) def test_max_decimal_places_validation(self): field = models.DecimalField(decimal_places=1) expected_message = validators.DecimalValidator.messages['max_decimal_places'] % {'max': 1} with self.assertRaisesMessage(ValidationError, expected_message): field.clean(Decimal('0.99'), None) def test_max_whole_digits_validation(self): field = models.DecimalField(max_digits=3, decimal_places=1) expected_message = validators.DecimalValidator.messages['max_whole_digits'] % {'max': 2} with self.assertRaisesMessage(ValidationError, expected_message): field.clean(Decimal('999'), None) class ForeignKeyTests(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) @test.skipIfDBFeature('interprets_empty_strings_as_nulls') def test_empty_string_fk(self): """ Test that foreign key values to empty strings don't get converted to None (#19299) """ char_model_empty = PrimaryKeyCharModel.objects.create(string='') fk_model_empty = FkToChar.objects.create(out=char_model_empty) fk_model_empty = FkToChar.objects.select_related('out').get(id=fk_model_empty.pk) self.assertEqual(fk_model_empty.out, char_model_empty) @isolate_apps('model_fields') def test_warning_when_unique_true_on_fk(self): class Foo(models.Model): pass class FKUniqueTrue(models.Model): fk_field = models.ForeignKey(Foo, models.CASCADE, unique=True) model = FKUniqueTrue() expected_warnings = [ checks.Warning( 'Setting unique=True on a ForeignKey has the same effect as using a OneToOneField.', hint='ForeignKey(unique=True) is usually better served by a OneToOneField.', obj=FKUniqueTrue.fk_field.field, id='fields.W342', ) ] warnings = model.check() self.assertEqual(warnings, expected_warnings) def test_related_name_converted_to_text(self): rel_name = Bar._meta.get_field('a').remote_field.related_name self.assertIsInstance(rel_name, six.text_type) def test_abstract_model_pending_operations(self): """ Foreign key fields declared on abstract models should not add lazy relations to resolve relationship declared as string. refs #24215 """ pending_ops_before = list(apps._pending_operations.items()) class AbstractForeignKeyModel(models.Model): fk = models.ForeignKey('missing.FK', models.CASCADE) class Meta: abstract = True self.assertIs(AbstractForeignKeyModel._meta.apps, apps) self.assertEqual( pending_ops_before, list(apps._pending_operations.items()), "Pending lookup added for a foreign key on an abstract model" ) @isolate_apps('model_fields', 'model_fields.tests') def test_abstract_model_app_relative_foreign_key(self): class AbstractReferent(models.Model): reference = models.ForeignKey('Refered', on_delete=models.CASCADE) class Meta: app_label = 'model_fields' abstract = True def assert_app_model_resolved(label): class Refered(models.Model): class Meta: app_label = label class ConcreteReferent(AbstractReferent): class Meta: app_label = label self.assertEqual(ConcreteReferent._meta.get_field('reference').related_model, Refered) assert_app_model_resolved('model_fields') assert_app_model_resolved('tests') class ManyToManyFieldTests(test.SimpleTestCase): def test_abstract_model_pending_operations(self): """ Many-to-many fields declared on abstract models should not add lazy relations to resolve relationship declared as string. refs #24215 """ pending_ops_before = list(apps._pending_operations.items()) class AbstractManyToManyModel(models.Model): fk = models.ForeignKey('missing.FK', models.CASCADE) class Meta: abstract = True self.assertIs(AbstractManyToManyModel._meta.apps, apps) self.assertEqual( pending_ops_before, list(apps._pending_operations.items()), "Pending lookup added for a many-to-many field on an abstract model" ) @isolate_apps('model_fields', 'model_fields.tests') def test_abstract_model_app_relative_foreign_key(self): class AbstractReferent(models.Model): reference = models.ManyToManyField('Refered', through='Through') class Meta: app_label = 'model_fields' abstract = True def assert_app_model_resolved(label): class Refered(models.Model): class Meta: app_label = label class Through(models.Model): refered = models.ForeignKey('Refered', on_delete=models.CASCADE) referent = models.ForeignKey('ConcreteReferent', on_delete=models.CASCADE) class Meta: app_label = label class ConcreteReferent(AbstractReferent): class Meta: app_label = label self.assertEqual(ConcreteReferent._meta.get_field('reference').related_model, Refered) self.assertEqual(ConcreteReferent.reference.through, Through) assert_app_model_resolved('model_fields') assert_app_model_resolved('tests') class TextFieldTests(test.TestCase): def test_to_python(self): """TextField.to_python() should return a string""" f = models.TextField() self.assertEqual(f.to_python(1), '1') class DateTimeFieldTests(test.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)) @test.skipUnlessDBFeature("supports_microsecond_precision") def test_datetimes_save_completely(self): dat = datetime.date(2014, 3, 12) datetim = datetime.datetime(2014, 3, 12, 21, 22, 23, 240000) tim = datetime.time(21, 22, 23, 240000) DateTimeModel.objects.create(d=dat, dt=datetim, t=tim) obj = DateTimeModel.objects.first() self.assertTrue(obj) self.assertEqual(obj.d, dat) self.assertEqual(obj.dt, datetim) self.assertEqual(obj.t, tim) @test.override_settings(USE_TZ=False) def test_lookup_date_without_use_tz(self): d = datetime.date(2014, 3, 12) dt1 = datetime.datetime(2014, 3, 12, 21, 22, 23, 240000) dt2 = datetime.datetime(2014, 3, 11, 21, 22, 23, 240000) t = datetime.time(21, 22, 23, 240000) m = DateTimeModel.objects.create(d=d, dt=dt1, t=t) # Other model with different datetime. DateTimeModel.objects.create(d=d, dt=dt2, t=t) self.assertEqual(m, DateTimeModel.objects.get(dt__date=d)) @requires_tz_support @test.skipUnlessDBFeature('has_zoneinfo_database') @test.override_settings(USE_TZ=True, TIME_ZONE='America/Vancouver') def test_lookup_date_with_use_tz(self): d = datetime.date(2014, 3, 12) # The following is equivalent to UTC 2014-03-12 18:34:23.24000. dt1 = datetime.datetime( 2014, 3, 12, 10, 22, 23, 240000, tzinfo=timezone.get_current_timezone() ) # The following is equivalent to UTC 2014-03-13 05:34:23.24000. dt2 = datetime.datetime( 2014, 3, 12, 21, 22, 23, 240000, tzinfo=timezone.get_current_timezone() ) t = datetime.time(21, 22, 23, 240000) m1 = DateTimeModel.objects.create(d=d, dt=dt1, t=t) m2 = DateTimeModel.objects.create(d=d, dt=dt2, t=t) # In Vancouver, we expect both results. self.assertQuerysetEqual( DateTimeModel.objects.filter(dt__date=d), [repr(m1), repr(m2)], ordered=False ) with self.settings(TIME_ZONE='UTC'): # But in UTC, the __date only matches one of them. self.assertQuerysetEqual( DateTimeModel.objects.filter(dt__date=d), [repr(m1)] ) class BooleanFieldTests(test.TestCase): def _test_get_db_prep_lookup(self, f): self.assertEqual(f.get_db_prep_lookup('exact', True, connection=connection), [True]) self.assertEqual(f.get_db_prep_lookup('exact', '1', connection=connection), [True]) self.assertEqual(f.get_db_prep_lookup('exact', 1, connection=connection), [True]) self.assertEqual(f.get_db_prep_lookup('exact', False, connection=connection), [False]) self.assertEqual(f.get_db_prep_lookup('exact', '0', connection=connection), [False]) self.assertEqual(f.get_db_prep_lookup('exact', 0, connection=connection), [False]) self.assertEqual(f.get_db_prep_lookup('exact', None, connection=connection), [None]) def _test_to_python(self, f): self.assertIs(f.to_python(1), True) self.assertIs(f.to_python(0), False) 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_to_python(self): self._test_to_python(models.BooleanField()) def test_nullbooleanfield_to_python(self): self._test_to_python(models.NullBooleanField()) def test_charfield_textfield_max_length_passed_to_formfield(self): """ Test that CharField and TextField pass their max_length attributes to form fields created using their .formfield() method (#22206). """ cf1 = models.CharField() cf2 = models.CharField(max_length=1234) self.assertIsNone(cf1.formfield().max_length) self.assertEqual(1234, cf2.formfield().max_length) tf1 = models.TextField() tf2 = models.TextField(max_length=2345) self.assertIsNone(tf1.formfield().max_length) self.assertEqual(2345, tf2.formfield().max_length) 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, 'Si'), (2, 'No')] f = models.BooleanField(choices=choices, default=1, null=False) self.assertEqual(f.formfield().choices, choices) def test_return_type(self): b = BooleanModel() b.bfield = True b.save() b2 = BooleanModel.objects.get(pk=b.pk) self.assertIsInstance(b2.bfield, bool) self.assertEqual(b2.bfield, True) b3 = BooleanModel() b3.bfield = False b3.save() b4 = BooleanModel.objects.get(pk=b3.pk) self.assertIsInstance(b4.bfield, bool) self.assertEqual(b4.bfield, False) b = NullBooleanModel() b.nbfield = True b.save() b2 = NullBooleanModel.objects.get(pk=b.pk) self.assertIsInstance(b2.nbfield, bool) self.assertEqual(b2.nbfield, True) b3 = NullBooleanModel() b3.nbfield = False b3.save() b4 = NullBooleanModel.objects.get(pk=b3.pk) self.assertIsInstance(b4.nbfield, bool) self.assertEqual(b4.nbfield, False) # http://code.djangoproject.com/ticket/13293 # Verify that when an extra clause exists, the boolean # conversions are applied with an offset b5 = BooleanModel.objects.all().extra( select={'string_col': 'string'})[0] self.assertNotIsInstance(b5.pk, bool) def test_select_related(self): """ Test type of boolean fields when retrieved via select_related() (MySQL, #15040) """ bmt = BooleanModel.objects.create(bfield=True) bmf = BooleanModel.objects.create(bfield=False) nbmt = NullBooleanModel.objects.create(nbfield=True) nbmf = NullBooleanModel.objects.create(nbfield=False) m1 = FksToBooleans.objects.create(bf=bmt, nbf=nbmt) m2 = FksToBooleans.objects.create(bf=bmf, nbf=nbmf) # Test select_related('fk_field_name') ma = FksToBooleans.objects.select_related('bf').get(pk=m1.id) # verify types -- shouldn't be 0/1 self.assertIsInstance(ma.bf.bfield, bool) self.assertIsInstance(ma.nbf.nbfield, bool) # verify values self.assertEqual(ma.bf.bfield, True) self.assertEqual(ma.nbf.nbfield, True) # Test select_related() mb = FksToBooleans.objects.select_related().get(pk=m1.id) mc = FksToBooleans.objects.select_related().get(pk=m2.id) # verify types -- shouldn't be 0/1 self.assertIsInstance(mb.bf.bfield, bool) self.assertIsInstance(mb.nbf.nbfield, bool) self.assertIsInstance(mc.bf.bfield, bool) self.assertIsInstance(mc.nbf.nbfield, bool) # verify values self.assertEqual(mb.bf.bfield, True) self.assertEqual(mb.nbf.nbfield, True) self.assertEqual(mc.bf.bfield, False) self.assertEqual(mc.nbf.nbfield, False) def test_null_default(self): """ Check that a BooleanField defaults to None -- which isn't a valid value (#15124). """ # Patch the boolean field's default value. We give it a default # value when defining the model to satisfy the check tests # #20895. boolean_field = BooleanModel._meta.get_field('bfield') self.assertTrue(boolean_field.has_default()) old_default = boolean_field.default try: boolean_field.default = NOT_PROVIDED # check patch was successful self.assertFalse(boolean_field.has_default()) b = BooleanModel() self.assertIsNone(b.bfield) with transaction.atomic(): with self.assertRaises(IntegrityError): b.save() finally: boolean_field.default = old_default nb = NullBooleanModel() self.assertIsNone(nb.nbfield) nb.save() # no error class ChoicesTests(test.SimpleTestCase): def test_choices_and_field_display(self): """ Check that get_choices() interacts 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 def test_iterator_choices(self): """ Check that get_choices works with Iterators (#23112). """ self.assertEqual(WhizIter(c=1).c, 1) # A nested value self.assertEqual(WhizIter(c=9).c, 9) # Invalid value self.assertEqual(WhizIter(c=None).c, None) # Blank value self.assertEqual(WhizIter(c='').c, '') # Empty value def test_empty_iterator_choices(self): """ Check that get_choices works with empty iterators (#23112). """ self.assertEqual(WhizIterEmpty(c="a").c, "a") # A nested value self.assertEqual(WhizIterEmpty(c="b").c, "b") # Invalid value self.assertEqual(WhizIterEmpty(c=None).c, None) # Blank value self.assertEqual(WhizIterEmpty(c='').c, '') # Empty value class SlugFieldTests(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) def test_slugfield_unicode_max_length(self): """ SlugField with allow_unicode=True should honor max_length. """ bs = UnicodeSlugField.objects.create(s='你好你好' * 50) bs = UnicodeSlugField.objects.get(pk=bs.pk) self.assertEqual(bs.s, '你好你好' * 50) class ValidationTest(test.SimpleTestCase): def test_charfield_raises_error_on_empty_string(self): f = models.CharField() with self.assertRaises(ValidationError): f.clean("", None) def test_charfield_cleans_empty_string_when_blank_true(self): f = models.CharField(blank=True) self.assertEqual('', f.clean('', None)) def test_integerfield_cleans_valid_string(self): f = models.IntegerField() self.assertEqual(2, f.clean('2', None)) def test_integerfield_raises_error_on_invalid_intput(self): f = models.IntegerField() with self.assertRaises(ValidationError): f.clean("a", None) def test_charfield_with_choices_cleans_valid_choice(self): f = models.CharField(max_length=1, choices=[('a', 'A'), ('b', 'B')]) self.assertEqual('a', f.clean('a', None)) def test_charfield_with_choices_raises_error_on_invalid_choice(self): f = models.CharField(choices=[('a', 'A'), ('b', 'B')]) with self.assertRaises(ValidationError): f.clean("not a", None) def test_charfield_get_choices_with_blank_defined(self): f = models.CharField(choices=[('', '<><>'), ('a', 'A')]) self.assertEqual(f.get_choices(True), [('', '<><>'), ('a', 'A')]) def test_charfield_get_choices_doesnt_evaluate_lazy_strings(self): # Regression test for #23098 # Will raise ZeroDivisionError if lazy is evaluated lazy_func = lazy(lambda x: 0 / 0, int) f = models.CharField(choices=[(lazy_func('group'), (('a', 'A'), ('b', 'B')))]) self.assertEqual(f.get_choices(True)[0], ('', '---------')) def test_choices_validation_supports_named_groups(self): f = models.IntegerField( choices=(('group', ((10, 'A'), (20, 'B'))), (30, 'C'))) self.assertEqual(10, f.clean(10, None)) def test_nullable_integerfield_raises_error_with_blank_false(self): f = models.IntegerField(null=True, blank=False) with self.assertRaises(ValidationError): f.clean(None, None) def test_nullable_integerfield_cleans_none_on_null_and_blank_true(self): f = models.IntegerField(null=True, blank=True) self.assertIsNone(f.clean(None, None)) def test_integerfield_raises_error_on_empty_input(self): f = models.IntegerField(null=False) with self.assertRaises(ValidationError): f.clean(None, None) with self.assertRaises(ValidationError): f.clean('', None) def test_integerfield_validates_zero_against_choices(self): f = models.IntegerField(choices=((1, 1),)) with self.assertRaises(ValidationError): f.clean('0', None) def test_charfield_raises_error_on_empty_input(self): f = models.CharField(null=False) with self.assertRaises(ValidationError): f.clean(None, None) def test_datefield_cleans_date(self): f = models.DateField() self.assertEqual(datetime.date(2008, 10, 10), f.clean('2008-10-10', None)) def test_boolean_field_doesnt_accept_empty_input(self): f = models.BooleanField() with self.assertRaises(ValidationError): f.clean(None, None) class IntegerFieldTests(test.TestCase): model = IntegerModel documented_range = (-2147483648, 2147483647) @property def backend_range(self): field = self.model._meta.get_field('value') internal_type = field.get_internal_type() return connection.ops.integer_field_range(internal_type) def test_documented_range(self): """ Ensure that values within the documented safe range pass validation, can be saved and retrieved without corruption. """ min_value, max_value = self.documented_range instance = self.model(value=min_value) instance.full_clean() instance.save() qs = self.model.objects.filter(value__lte=min_value) self.assertEqual(qs.count(), 1) self.assertEqual(qs[0].value, min_value) instance = self.model(value=max_value) instance.full_clean() instance.save() qs = self.model.objects.filter(value__gte=max_value) self.assertEqual(qs.count(), 1) self.assertEqual(qs[0].value, max_value) def test_backend_range_save(self): """ Ensure that backend specific range can be saved without corruption. """ min_value, max_value = self.backend_range if min_value is not None: instance = self.model(value=min_value) instance.full_clean() instance.save() qs = self.model.objects.filter(value__lte=min_value) self.assertEqual(qs.count(), 1) self.assertEqual(qs[0].value, min_value) if max_value is not None: instance = self.model(value=max_value) instance.full_clean() instance.save() qs = self.model.objects.filter(value__gte=max_value) self.assertEqual(qs.count(), 1) self.assertEqual(qs[0].value, max_value) def test_backend_range_validation(self): """ Ensure that backend specific range are enforced at the model validation level. ref #12030. """ min_value, max_value = self.backend_range if min_value is not None: instance = self.model(value=min_value - 1) expected_message = validators.MinValueValidator.message % { 'limit_value': min_value } with self.assertRaisesMessage(ValidationError, expected_message): instance.full_clean() instance.value = min_value instance.full_clean() if max_value is not None: instance = self.model(value=max_value + 1) expected_message = validators.MaxValueValidator.message % { 'limit_value': max_value } with self.assertRaisesMessage(ValidationError, expected_message): instance.full_clean() instance.value = max_value instance.full_clean() def test_types(self): instance = self.model(value=0) self.assertIsInstance(instance.value, six.integer_types) instance.save() self.assertIsInstance(instance.value, six.integer_types) instance = self.model.objects.get() self.assertIsInstance(instance.value, six.integer_types) def test_coercing(self): self.model.objects.create(value='10') instance = self.model.objects.get(value='10') self.assertEqual(instance.value, 10) class SmallIntegerFieldTests(IntegerFieldTests): model = SmallIntegerModel documented_range = (-32768, 32767) class BigIntegerFieldTests(IntegerFieldTests): model = BigIntegerModel documented_range = (-9223372036854775808, 9223372036854775807) class PositiveSmallIntegerFieldTests(IntegerFieldTests): model = PositiveSmallIntegerModel documented_range = (0, 32767) class PositiveIntegerFieldTests(IntegerFieldTests): model = PositiveIntegerModel documented_range = (0, 2147483647) class TypeCoercionTests(test.TestCase): """ Test that database lookups can accept the wrong types and convert them with no error: especially on Postgres 8.3+ which does not do automatic casting at the DB level. See #10015. """ def test_lookup_integer_in_charfield(self): self.assertEqual(Post.objects.filter(title=9).count(), 0) def test_lookup_integer_in_textfield(self): self.assertEqual(Post.objects.filter(body=24).count(), 0) class FileFieldTests(unittest.TestCase): def test_clearable(self): """ Test that FileField.save_form_data will clear its instance attribute value if passed False. """ d = Document(myfile='something.txt') self.assertEqual(d.myfile, 'something.txt') field = d._meta.get_field('myfile') field.save_form_data(d, False) self.assertEqual(d.myfile, '') def test_unchanged(self): """ Test that FileField.save_form_data considers None to mean "no change" rather than "clear". """ d = Document(myfile='something.txt') self.assertEqual(d.myfile, 'something.txt') field = d._meta.get_field('myfile') field.save_form_data(d, None) self.assertEqual(d.myfile, 'something.txt') def test_changed(self): """ Test that FileField.save_form_data, if passed a truthy value, updates its instance attribute. """ d = Document(myfile='something.txt') self.assertEqual(d.myfile, 'something.txt') field = d._meta.get_field('myfile') field.save_form_data(d, 'else.txt') self.assertEqual(d.myfile, 'else.txt') def test_delete_when_file_unset(self): """ Calling delete on an unset FileField should not call the file deletion process, but fail silently (#20660). """ d = Document() try: d.myfile.delete() except OSError: self.fail("Deleting an unset FileField should not raise OSError.") def test_refresh_from_db(self): d = Document.objects.create(myfile='something.txt') d.refresh_from_db() self.assertIs(d.myfile.instance, d) class BinaryFieldTests(test.TestCase): binary_data = b'\x00\x46\xFE' def test_set_and_retrieve(self): data_set = (self.binary_data, six.memoryview(self.binary_data)) for bdata in data_set: dm = DataModel(data=bdata) dm.save() dm = DataModel.objects.get(pk=dm.pk) self.assertEqual(bytes(dm.data), bytes(bdata)) # Resave (=update) dm.save() dm = DataModel.objects.get(pk=dm.pk) self.assertEqual(bytes(dm.data), bytes(bdata)) # Test default value self.assertEqual(bytes(dm.short_data), b'\x08') def test_max_length(self): dm = DataModel(short_data=self.binary_data * 4) with self.assertRaises(ValidationError): dm.full_clean() class GenericIPAddressFieldTests(test.TestCase): def test_genericipaddressfield_formfield_protocol(self): """ Test that GenericIPAddressField with a specified protocol does not generate a formfield with no specified protocol. See #20740. """ model_field = models.GenericIPAddressField(protocol='IPv4') form_field = model_field.formfield() with self.assertRaises(ValidationError): form_field.clean('::1') model_field = models.GenericIPAddressField(protocol='IPv6') form_field = model_field.formfield() with self.assertRaises(ValidationError): form_field.clean('127.0.0.1') def test_null_value(self): """ Null values should be resolved to None in Python (#24078). """ GenericIPAddress.objects.create() o = GenericIPAddress.objects.get() self.assertIsNone(o.ip) def test_save_load(self): instance = GenericIPAddress.objects.create(ip='::1') loaded = GenericIPAddress.objects.get() self.assertEqual(loaded.ip, instance.ip) class PromiseTest(test.SimpleTestCase): def test_AutoField(self): lazy_func = lazy(lambda: 1, int) self.assertIsInstance( AutoField(primary_key=True).get_prep_value(lazy_func()), int) @unittest.skipIf(six.PY3, "Python 3 has no `long` type.") def test_BigIntegerField(self): # NOQA: long undefined on PY3 lazy_func = lazy(lambda: long(9999999999999999999), long) # NOQA self.assertIsInstance( BigIntegerField().get_prep_value(lazy_func()), long) # NOQA def test_BinaryField(self): lazy_func = lazy(lambda: b'', bytes) self.assertIsInstance( BinaryField().get_prep_value(lazy_func()), bytes) def test_BooleanField(self): lazy_func = lazy(lambda: True, bool) self.assertIsInstance( BooleanField().get_prep_value(lazy_func()), bool) def test_CharField(self): lazy_func = lazy(lambda: '', six.text_type) self.assertIsInstance( CharField().get_prep_value(lazy_func()), six.text_type) lazy_func = lazy(lambda: 0, int) self.assertIsInstance( CharField().get_prep_value(lazy_func()), six.text_type) def test_CommaSeparatedIntegerField(self): lazy_func = lazy(lambda: '1,2', six.text_type) self.assertIsInstance( CommaSeparatedIntegerField().get_prep_value(lazy_func()), six.text_type) lazy_func = lazy(lambda: 0, int) self.assertIsInstance( CommaSeparatedIntegerField().get_prep_value(lazy_func()), six.text_type) def test_DateField(self): lazy_func = lazy(lambda: datetime.date.today(), datetime.date) self.assertIsInstance( DateField().get_prep_value(lazy_func()), datetime.date) def test_DateTimeField(self): lazy_func = lazy(lambda: datetime.datetime.now(), datetime.datetime) self.assertIsInstance( DateTimeField().get_prep_value(lazy_func()), datetime.datetime) def test_DecimalField(self): lazy_func = lazy(lambda: Decimal('1.2'), Decimal) self.assertIsInstance( DecimalField().get_prep_value(lazy_func()), Decimal) def test_EmailField(self): lazy_func = lazy(lambda: 'mailbox@domain.com', six.text_type) self.assertIsInstance( EmailField().get_prep_value(lazy_func()), six.text_type) def test_FileField(self): lazy_func = lazy(lambda: 'filename.ext', six.text_type) self.assertIsInstance( FileField().get_prep_value(lazy_func()), six.text_type) lazy_func = lazy(lambda: 0, int) self.assertIsInstance( FileField().get_prep_value(lazy_func()), six.text_type) def test_FilePathField(self): lazy_func = lazy(lambda: 'tests.py', six.text_type) self.assertIsInstance( FilePathField().get_prep_value(lazy_func()), six.text_type) lazy_func = lazy(lambda: 0, int) self.assertIsInstance( FilePathField().get_prep_value(lazy_func()), six.text_type) def test_FloatField(self): lazy_func = lazy(lambda: 1.2, float) self.assertIsInstance( FloatField().get_prep_value(lazy_func()), float) def test_ImageField(self): lazy_func = lazy(lambda: 'filename.ext', six.text_type) self.assertIsInstance( ImageField().get_prep_value(lazy_func()), six.text_type) def test_IntegerField(self): lazy_func = lazy(lambda: 1, int) self.assertIsInstance( IntegerField().get_prep_value(lazy_func()), int) def test_IPAddressField(self): lazy_func = lazy(lambda: '127.0.0.1', six.text_type) self.assertIsInstance( IPAddressField().get_prep_value(lazy_func()), six.text_type) lazy_func = lazy(lambda: 0, int) self.assertIsInstance( IPAddressField().get_prep_value(lazy_func()), six.text_type) def test_GenericIPAddressField(self): lazy_func = lazy(lambda: '127.0.0.1', six.text_type) self.assertIsInstance( GenericIPAddressField().get_prep_value(lazy_func()), six.text_type) lazy_func = lazy(lambda: 0, int) self.assertIsInstance( GenericIPAddressField().get_prep_value(lazy_func()), six.text_type) def test_NullBooleanField(self): lazy_func = lazy(lambda: True, bool) self.assertIsInstance( NullBooleanField().get_prep_value(lazy_func()), bool) def test_PositiveIntegerField(self): lazy_func = lazy(lambda: 1, int) self.assertIsInstance( PositiveIntegerField().get_prep_value(lazy_func()), int) def test_PositiveSmallIntegerField(self): lazy_func = lazy(lambda: 1, int) self.assertIsInstance( PositiveSmallIntegerField().get_prep_value(lazy_func()), int) def test_SlugField(self): lazy_func = lazy(lambda: 'slug', six.text_type) self.assertIsInstance( SlugField().get_prep_value(lazy_func()), six.text_type) lazy_func = lazy(lambda: 0, int) self.assertIsInstance( SlugField().get_prep_value(lazy_func()), six.text_type) def test_SmallIntegerField(self): lazy_func = lazy(lambda: 1, int) self.assertIsInstance( SmallIntegerField().get_prep_value(lazy_func()), int) def test_TextField(self): lazy_func = lazy(lambda: 'Abc', six.text_type) self.assertIsInstance( TextField().get_prep_value(lazy_func()), six.text_type) lazy_func = lazy(lambda: 0, int) self.assertIsInstance( TextField().get_prep_value(lazy_func()), six.text_type) def test_TimeField(self): lazy_func = lazy(lambda: datetime.datetime.now().time(), datetime.time) self.assertIsInstance( TimeField().get_prep_value(lazy_func()), datetime.time) def test_URLField(self): lazy_func = lazy(lambda: 'http://domain.com', six.text_type) self.assertIsInstance( URLField().get_prep_value(lazy_func()), six.text_type) class CustomFieldTests(unittest.TestCase): def test_14786(self): """ Regression test for #14786 -- Test that field values are not prepared twice in get_db_prep_lookup(). """ class NoopField(models.TextField): def __init__(self, *args, **kwargs): self.prep_value_count = 0 super(NoopField, self).__init__(*args, **kwargs) def get_prep_value(self, value): self.prep_value_count += 1 return super(NoopField, self).get_prep_value(value) field = NoopField() field.get_db_prep_lookup( 'exact', 'TEST', connection=connection, prepared=False ) self.assertEqual(field.prep_value_count, 1)