209 lines
8.2 KiB
Python
209 lines
8.2 KiB
Python
from __future__ import unicode_literals
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import copy
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from django.db import models
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from django.db.models.loading import cache
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from django.template import Context, Template
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from django.test import TestCase
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from django.test.utils import override_settings
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from django.utils.encoding import force_text
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from .models import (
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Child1,
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Child2,
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Child3,
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Child4,
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Child5,
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Child6,
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Child7,
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AbstractBase1,
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AbstractBase2,
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AbstractBase3,
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RelatedModel,
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RelationModel,
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)
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class ManagersRegressionTests(TestCase):
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def test_managers(self):
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Child1.objects.create(name='fred', data='a1')
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Child1.objects.create(name='barney', data='a2')
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Child2.objects.create(name='fred', data='b1', value=1)
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Child2.objects.create(name='barney', data='b2', value=42)
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Child3.objects.create(name='fred', data='c1', comment='yes')
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Child3.objects.create(name='barney', data='c2', comment='no')
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Child4.objects.create(name='fred', data='d1')
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Child4.objects.create(name='barney', data='d2')
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Child5.objects.create(name='fred', comment='yes')
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Child5.objects.create(name='barney', comment='no')
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Child6.objects.create(name='fred', data='f1', value=42)
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Child6.objects.create(name='barney', data='f2', value=42)
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Child7.objects.create(name='fred')
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Child7.objects.create(name='barney')
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self.assertQuerysetEqual(Child1.manager1.all(), ["<Child1: a1>"])
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self.assertQuerysetEqual(Child1.manager2.all(), ["<Child1: a2>"])
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self.assertQuerysetEqual(Child1._default_manager.all(), ["<Child1: a1>"])
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self.assertQuerysetEqual(Child2._default_manager.all(), ["<Child2: b1>"])
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self.assertQuerysetEqual(Child2.restricted.all(), ["<Child2: b2>"])
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self.assertQuerysetEqual(Child3._default_manager.all(), ["<Child3: c1>"])
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self.assertQuerysetEqual(Child3.manager1.all(), ["<Child3: c1>"])
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self.assertQuerysetEqual(Child3.manager2.all(), ["<Child3: c2>"])
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# Since Child6 inherits from Child4, the corresponding rows from f1 and
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# f2 also appear here. This is the expected result.
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self.assertQuerysetEqual(Child4._default_manager.order_by('data'), [
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"<Child4: d1>",
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"<Child4: d2>",
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"<Child4: f1>",
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"<Child4: f2>"
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]
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)
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self.assertQuerysetEqual(Child4.manager1.all(), [
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"<Child4: d1>",
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"<Child4: f1>"
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],
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ordered=False
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)
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self.assertQuerysetEqual(Child5._default_manager.all(), ["<Child5: fred>"])
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self.assertQuerysetEqual(Child6._default_manager.all(), ["<Child6: f1>"])
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self.assertQuerysetEqual(Child7._default_manager.order_by('name'), [
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"<Child7: barney>",
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"<Child7: fred>"
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]
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)
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def test_abstract_manager(self):
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# Accessing the manager on an abstract model should
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# raise an attribute error with an appropriate message.
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try:
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AbstractBase3.objects.all()
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self.fail('Should raise an AttributeError')
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except AttributeError as e:
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# This error message isn't ideal, but if the model is abstract and
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# a lot of the class instantiation logic isn't invoked; if the
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# manager is implied, then we don't get a hook to install the
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# error-raising manager.
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self.assertEqual(str(e), "type object 'AbstractBase3' has no attribute 'objects'")
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def test_custom_abstract_manager(self):
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# Accessing the manager on an abstract model with an custom
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# manager should raise an attribute error with an appropriate
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# message.
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try:
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AbstractBase2.restricted.all()
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self.fail('Should raise an AttributeError')
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except AttributeError as e:
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self.assertEqual(str(e), "Manager isn't available; AbstractBase2 is abstract")
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def test_explicit_abstract_manager(self):
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# Accessing the manager on an abstract model with an explicit
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# manager should raise an attribute error with an appropriate
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# message.
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try:
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AbstractBase1.objects.all()
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self.fail('Should raise an AttributeError')
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except AttributeError as e:
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self.assertEqual(str(e), "Manager isn't available; AbstractBase1 is abstract")
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@override_settings(TEST_SWAPPABLE_MODEL='managers_regress.Parent')
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def test_swappable_manager(self):
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try:
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# This test adds dummy models to the app cache. These
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# need to be removed in order to prevent bad interactions
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# with the flush operation in other tests.
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old_app_models = copy.deepcopy(cache.app_models)
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old_app_store = copy.deepcopy(cache.app_store)
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class SwappableModel(models.Model):
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class Meta:
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swappable = 'TEST_SWAPPABLE_MODEL'
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# Accessing the manager on a swappable model should
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# raise an attribute error with a helpful message
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try:
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SwappableModel.objects.all()
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self.fail('Should raise an AttributeError')
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except AttributeError as e:
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self.assertEqual(str(e), "Manager isn't available; SwappableModel has been swapped for 'managers_regress.Parent'")
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finally:
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cache.app_models = old_app_models
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cache.app_store = old_app_store
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@override_settings(TEST_SWAPPABLE_MODEL='managers_regress.Parent')
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def test_custom_swappable_manager(self):
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try:
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# This test adds dummy models to the app cache. These
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# need to be removed in order to prevent bad interactions
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# with the flush operation in other tests.
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old_app_models = copy.deepcopy(cache.app_models)
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old_app_store = copy.deepcopy(cache.app_store)
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class SwappableModel(models.Model):
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stuff = models.Manager()
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class Meta:
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swappable = 'TEST_SWAPPABLE_MODEL'
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# Accessing the manager on a swappable model with an
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# explicit manager should raise an attribute error with a
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# helpful message
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try:
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SwappableModel.stuff.all()
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self.fail('Should raise an AttributeError')
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except AttributeError as e:
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self.assertEqual(str(e), "Manager isn't available; SwappableModel has been swapped for 'managers_regress.Parent'")
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finally:
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cache.app_models = old_app_models
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cache.app_store = old_app_store
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@override_settings(TEST_SWAPPABLE_MODEL='managers_regress.Parent')
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def test_explicit_swappable_manager(self):
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try:
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# This test adds dummy models to the app cache. These
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# need to be removed in order to prevent bad interactions
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# with the flush operation in other tests.
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old_app_models = copy.deepcopy(cache.app_models)
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old_app_store = copy.deepcopy(cache.app_store)
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class SwappableModel(models.Model):
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objects = models.Manager()
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class Meta:
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swappable = 'TEST_SWAPPABLE_MODEL'
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# Accessing the manager on a swappable model with an
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# explicit manager should raise an attribute error with a
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# helpful message
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try:
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SwappableModel.objects.all()
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self.fail('Should raise an AttributeError')
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except AttributeError as e:
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self.assertEqual(str(e), "Manager isn't available; SwappableModel has been swapped for 'managers_regress.Parent'")
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finally:
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cache.app_models = old_app_models
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cache.app_store = old_app_store
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def test_regress_3871(self):
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related = RelatedModel.objects.create()
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relation = RelationModel()
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relation.fk = related
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relation.gfk = related
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relation.save()
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relation.m2m.add(related)
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t = Template('{{ related.test_fk.all.0 }}{{ related.test_gfk.all.0 }}{{ related.test_m2m.all.0 }}')
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self.assertEqual(
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t.render(Context({'related': related})),
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''.join([force_text(relation.pk)] * 3),
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)
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