mirror of
https://github.com/django/django.git
synced 2024-12-29 12:36:08 +00:00
84c9b24c5a
Swapped out models don't have a _default_manager unless they have
explicitly defined managers. ModelState.from_model() now accounts for
this case and uses an empty list for managers if no explicit managers
are defined and a model is swapped out.
Backport of 15dc8d1c9d from master
903 lines
33 KiB
Python
903 lines
33 KiB
Python
from django.apps.registry import Apps
|
|
from django.db import models
|
|
from django.db.migrations.operations import DeleteModel, RemoveField
|
|
from django.db.migrations.state import (
|
|
InvalidBasesError, ModelState, ProjectState, get_related_models_recursive,
|
|
)
|
|
from django.test import SimpleTestCase, TestCase, override_settings
|
|
|
|
from .models import (
|
|
FoodManager, FoodQuerySet, ModelWithCustomBase, NoMigrationFoodManager,
|
|
)
|
|
|
|
|
|
class StateTests(TestCase):
|
|
"""
|
|
Tests state construction, rendering and modification by operations.
|
|
"""
|
|
|
|
def test_create(self):
|
|
"""
|
|
Tests making a ProjectState from an Apps
|
|
"""
|
|
|
|
new_apps = Apps(["migrations"])
|
|
|
|
class Author(models.Model):
|
|
name = models.CharField(max_length=255)
|
|
bio = models.TextField()
|
|
age = models.IntegerField(blank=True, null=True)
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
unique_together = ["name", "bio"]
|
|
index_together = ["bio", "age"]
|
|
|
|
class AuthorProxy(Author):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
proxy = True
|
|
ordering = ["name"]
|
|
|
|
class SubAuthor(Author):
|
|
width = models.FloatField(null=True)
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
class Book(models.Model):
|
|
title = models.CharField(max_length=1000)
|
|
author = models.ForeignKey(Author)
|
|
contributors = models.ManyToManyField(Author)
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
verbose_name = "tome"
|
|
db_table = "test_tome"
|
|
|
|
class Food(models.Model):
|
|
|
|
food_mgr = FoodManager('a', 'b')
|
|
food_qs = FoodQuerySet.as_manager()
|
|
food_no_mgr = NoMigrationFoodManager('x', 'y')
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
class FoodNoManagers(models.Model):
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
class FoodNoDefaultManager(models.Model):
|
|
|
|
food_no_mgr = NoMigrationFoodManager('x', 'y')
|
|
food_mgr = FoodManager('a', 'b')
|
|
food_qs = FoodQuerySet.as_manager()
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
mgr1 = FoodManager('a', 'b')
|
|
mgr2 = FoodManager('x', 'y', c=3, d=4)
|
|
|
|
class FoodOrderedManagers(models.Model):
|
|
# The managers on this model should be ordered by their creation
|
|
# counter and not by the order in model body
|
|
|
|
food_no_mgr = NoMigrationFoodManager('x', 'y')
|
|
food_mgr2 = mgr2
|
|
food_mgr1 = mgr1
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
project_state = ProjectState.from_apps(new_apps)
|
|
author_state = project_state.models['migrations', 'author']
|
|
author_proxy_state = project_state.models['migrations', 'authorproxy']
|
|
sub_author_state = project_state.models['migrations', 'subauthor']
|
|
book_state = project_state.models['migrations', 'book']
|
|
food_state = project_state.models['migrations', 'food']
|
|
food_no_managers_state = project_state.models['migrations', 'foodnomanagers']
|
|
food_no_default_manager_state = project_state.models['migrations', 'foodnodefaultmanager']
|
|
food_order_manager_state = project_state.models['migrations', 'foodorderedmanagers']
|
|
|
|
self.assertEqual(author_state.app_label, "migrations")
|
|
self.assertEqual(author_state.name, "Author")
|
|
self.assertEqual([x for x, y in author_state.fields], ["id", "name", "bio", "age"])
|
|
self.assertEqual(author_state.fields[1][1].max_length, 255)
|
|
self.assertEqual(author_state.fields[2][1].null, False)
|
|
self.assertEqual(author_state.fields[3][1].null, True)
|
|
self.assertEqual(author_state.options, {"unique_together": {("name", "bio")}, "index_together": {("bio", "age")}})
|
|
self.assertEqual(author_state.bases, (models.Model, ))
|
|
|
|
self.assertEqual(book_state.app_label, "migrations")
|
|
self.assertEqual(book_state.name, "Book")
|
|
self.assertEqual([x for x, y in book_state.fields], ["id", "title", "author", "contributors"])
|
|
self.assertEqual(book_state.fields[1][1].max_length, 1000)
|
|
self.assertEqual(book_state.fields[2][1].null, False)
|
|
self.assertEqual(book_state.fields[3][1].__class__.__name__, "ManyToManyField")
|
|
self.assertEqual(book_state.options, {"verbose_name": "tome", "db_table": "test_tome"})
|
|
self.assertEqual(book_state.bases, (models.Model, ))
|
|
|
|
self.assertEqual(author_proxy_state.app_label, "migrations")
|
|
self.assertEqual(author_proxy_state.name, "AuthorProxy")
|
|
self.assertEqual(author_proxy_state.fields, [])
|
|
self.assertEqual(author_proxy_state.options, {"proxy": True, "ordering": ["name"]})
|
|
self.assertEqual(author_proxy_state.bases, ("migrations.author", ))
|
|
|
|
self.assertEqual(sub_author_state.app_label, "migrations")
|
|
self.assertEqual(sub_author_state.name, "SubAuthor")
|
|
self.assertEqual(len(sub_author_state.fields), 2)
|
|
self.assertEqual(sub_author_state.bases, ("migrations.author", ))
|
|
|
|
# The default manager is used in migrations
|
|
self.assertEqual([name for name, mgr in food_state.managers], ['food_mgr'])
|
|
self.assertEqual(food_state.managers[0][1].args, ('a', 'b', 1, 2))
|
|
|
|
# No explicit managers defined. Migrations will fall back to the default
|
|
self.assertEqual(food_no_managers_state.managers, [])
|
|
|
|
# food_mgr is used in migration but isn't the default mgr, hence add the
|
|
# default
|
|
self.assertEqual([name for name, mgr in food_no_default_manager_state.managers],
|
|
['food_no_mgr', 'food_mgr'])
|
|
self.assertEqual(food_no_default_manager_state.managers[0][1].__class__, models.Manager)
|
|
self.assertIsInstance(food_no_default_manager_state.managers[1][1], FoodManager)
|
|
|
|
self.assertEqual([name for name, mgr in food_order_manager_state.managers],
|
|
['food_mgr1', 'food_mgr2'])
|
|
self.assertEqual([mgr.args for name, mgr in food_order_manager_state.managers],
|
|
[('a', 'b', 1, 2), ('x', 'y', 3, 4)])
|
|
|
|
def test_render(self):
|
|
"""
|
|
Tests rendering a ProjectState into an Apps.
|
|
"""
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState(
|
|
app_label="migrations",
|
|
name="Tag",
|
|
fields=[
|
|
("id", models.AutoField(primary_key=True)),
|
|
("name", models.CharField(max_length=100)),
|
|
("hidden", models.BooleanField()),
|
|
],
|
|
))
|
|
project_state.add_model(ModelState(
|
|
app_label="migrations",
|
|
name="SubTag",
|
|
fields=[
|
|
('tag_ptr', models.OneToOneField(
|
|
auto_created=True,
|
|
primary_key=True,
|
|
to_field='id',
|
|
serialize=False,
|
|
to='migrations.Tag',
|
|
)),
|
|
("awesome", models.BooleanField()),
|
|
],
|
|
bases=("migrations.Tag",),
|
|
))
|
|
|
|
base_mgr = models.Manager()
|
|
mgr1 = FoodManager('a', 'b')
|
|
mgr2 = FoodManager('x', 'y', c=3, d=4)
|
|
project_state.add_model(ModelState(
|
|
app_label="migrations",
|
|
name="Food",
|
|
fields=[
|
|
("id", models.AutoField(primary_key=True)),
|
|
],
|
|
managers=[
|
|
# The ordering we really want is objects, mgr1, mgr2
|
|
('default', base_mgr),
|
|
('food_mgr2', mgr2),
|
|
('food_mgr1', mgr1),
|
|
]
|
|
))
|
|
|
|
new_apps = project_state.apps
|
|
self.assertEqual(new_apps.get_model("migrations", "Tag")._meta.get_field("name").max_length, 100)
|
|
self.assertEqual(new_apps.get_model("migrations", "Tag")._meta.get_field("hidden").null, False)
|
|
|
|
self.assertEqual(len(new_apps.get_model("migrations", "SubTag")._meta.local_fields), 2)
|
|
|
|
Food = new_apps.get_model("migrations", "Food")
|
|
managers = sorted(Food._meta.managers)
|
|
self.assertEqual([mgr.name for _, mgr, _ in managers],
|
|
['default', 'food_mgr1', 'food_mgr2'])
|
|
self.assertEqual([mgr.__class__ for _, mgr, _ in managers],
|
|
[models.Manager, FoodManager, FoodManager])
|
|
self.assertIs(managers[0][1], Food._default_manager)
|
|
|
|
def test_render_model_inheritance(self):
|
|
class Book(models.Model):
|
|
title = models.CharField(max_length=1000)
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = Apps()
|
|
|
|
class Novel(Book):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = Apps()
|
|
|
|
# First, test rendering individually
|
|
apps = Apps(["migrations"])
|
|
|
|
# We shouldn't be able to render yet
|
|
ms = ModelState.from_model(Novel)
|
|
with self.assertRaises(InvalidBasesError):
|
|
ms.render(apps)
|
|
|
|
# Once the parent model is in the app registry, it should be fine
|
|
ModelState.from_model(Book).render(apps)
|
|
ModelState.from_model(Novel).render(apps)
|
|
|
|
def test_render_model_with_multiple_inheritance(self):
|
|
class Foo(models.Model):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = Apps()
|
|
|
|
class Bar(models.Model):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = Apps()
|
|
|
|
class FooBar(Foo, Bar):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = Apps()
|
|
|
|
class AbstractSubFooBar(FooBar):
|
|
class Meta:
|
|
abstract = True
|
|
apps = Apps()
|
|
|
|
class SubFooBar(AbstractSubFooBar):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = Apps()
|
|
|
|
apps = Apps(["migrations"])
|
|
|
|
# We shouldn't be able to render yet
|
|
ms = ModelState.from_model(FooBar)
|
|
with self.assertRaises(InvalidBasesError):
|
|
ms.render(apps)
|
|
|
|
# Once the parent models are in the app registry, it should be fine
|
|
ModelState.from_model(Foo).render(apps)
|
|
self.assertSequenceEqual(ModelState.from_model(Foo).bases, [models.Model])
|
|
ModelState.from_model(Bar).render(apps)
|
|
self.assertSequenceEqual(ModelState.from_model(Bar).bases, [models.Model])
|
|
ModelState.from_model(FooBar).render(apps)
|
|
self.assertSequenceEqual(ModelState.from_model(FooBar).bases, ['migrations.foo', 'migrations.bar'])
|
|
ModelState.from_model(SubFooBar).render(apps)
|
|
self.assertSequenceEqual(ModelState.from_model(SubFooBar).bases, ['migrations.foobar'])
|
|
|
|
def test_render_project_dependencies(self):
|
|
"""
|
|
Tests that the ProjectState render method correctly renders models
|
|
to account for inter-model base dependencies.
|
|
"""
|
|
new_apps = Apps()
|
|
|
|
class A(models.Model):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
class B(A):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
class C(B):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
class D(A):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
class E(B):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
proxy = True
|
|
|
|
class F(D):
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
proxy = True
|
|
|
|
# Make a ProjectState and render it
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState.from_model(A))
|
|
project_state.add_model(ModelState.from_model(B))
|
|
project_state.add_model(ModelState.from_model(C))
|
|
project_state.add_model(ModelState.from_model(D))
|
|
project_state.add_model(ModelState.from_model(E))
|
|
project_state.add_model(ModelState.from_model(F))
|
|
final_apps = project_state.apps
|
|
self.assertEqual(len(final_apps.get_models()), 6)
|
|
|
|
# Now make an invalid ProjectState and make sure it fails
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState.from_model(A))
|
|
project_state.add_model(ModelState.from_model(B))
|
|
project_state.add_model(ModelState.from_model(C))
|
|
project_state.add_model(ModelState.from_model(F))
|
|
with self.assertRaises(InvalidBasesError):
|
|
project_state.apps
|
|
|
|
def test_render_unique_app_labels(self):
|
|
"""
|
|
Tests that the ProjectState render method doesn't raise an
|
|
ImproperlyConfigured exception about unique labels if two dotted app
|
|
names have the same last part.
|
|
"""
|
|
class A(models.Model):
|
|
class Meta:
|
|
app_label = "django.contrib.auth"
|
|
|
|
class B(models.Model):
|
|
class Meta:
|
|
app_label = "vendor.auth"
|
|
|
|
# Make a ProjectState and render it
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState.from_model(A))
|
|
project_state.add_model(ModelState.from_model(B))
|
|
self.assertEqual(len(project_state.apps.get_models()), 2)
|
|
|
|
def test_remove_relations(self):
|
|
"""
|
|
#24225 - Tests that relations between models are updated while
|
|
remaining the relations and references for models of an old state.
|
|
"""
|
|
class A(models.Model):
|
|
class Meta:
|
|
app_label = "something"
|
|
|
|
class B(models.Model):
|
|
to_a = models.ForeignKey(A)
|
|
|
|
class Meta:
|
|
app_label = "something"
|
|
|
|
def get_model_a(state):
|
|
return [mod for mod in state.apps.get_models() if mod._meta.model_name == 'a'][0]
|
|
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState.from_model(A))
|
|
project_state.add_model(ModelState.from_model(B))
|
|
self.assertEqual(len(get_model_a(project_state)._meta.related_objects), 1)
|
|
old_state = project_state.clone()
|
|
|
|
operation = RemoveField("b", "to_a")
|
|
operation.state_forwards("something", project_state)
|
|
# Tests that model from old_state still has the relation
|
|
model_a_old = get_model_a(old_state)
|
|
model_a_new = get_model_a(project_state)
|
|
self.assertIsNot(model_a_old, model_a_new)
|
|
self.assertEqual(len(model_a_old._meta.related_objects), 1)
|
|
self.assertEqual(len(model_a_new._meta.related_objects), 0)
|
|
|
|
# Same test for deleted model
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState.from_model(A))
|
|
project_state.add_model(ModelState.from_model(B))
|
|
old_state = project_state.clone()
|
|
|
|
operation = DeleteModel("b")
|
|
operation.state_forwards("something", project_state)
|
|
model_a_old = get_model_a(old_state)
|
|
model_a_new = get_model_a(project_state)
|
|
self.assertIsNot(model_a_old, model_a_new)
|
|
self.assertEqual(len(model_a_old._meta.related_objects), 1)
|
|
self.assertEqual(len(model_a_new._meta.related_objects), 0)
|
|
|
|
def test_equality(self):
|
|
"""
|
|
Tests that == and != are implemented correctly.
|
|
"""
|
|
|
|
# Test two things that should be equal
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState(
|
|
"migrations",
|
|
"Tag",
|
|
[
|
|
("id", models.AutoField(primary_key=True)),
|
|
("name", models.CharField(max_length=100)),
|
|
("hidden", models.BooleanField()),
|
|
],
|
|
{},
|
|
None,
|
|
))
|
|
project_state.apps # Fill the apps cached property
|
|
other_state = project_state.clone()
|
|
self.assertEqual(project_state, project_state)
|
|
self.assertEqual(project_state, other_state)
|
|
self.assertEqual(project_state != project_state, False)
|
|
self.assertEqual(project_state != other_state, False)
|
|
self.assertNotEqual(project_state.apps, other_state.apps)
|
|
|
|
# Make a very small change (max_len 99) and see if that affects it
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState(
|
|
"migrations",
|
|
"Tag",
|
|
[
|
|
("id", models.AutoField(primary_key=True)),
|
|
("name", models.CharField(max_length=99)),
|
|
("hidden", models.BooleanField()),
|
|
],
|
|
{},
|
|
None,
|
|
))
|
|
self.assertNotEqual(project_state, other_state)
|
|
self.assertEqual(project_state == other_state, False)
|
|
|
|
def test_dangling_references_throw_error(self):
|
|
new_apps = Apps()
|
|
|
|
class Author(models.Model):
|
|
name = models.TextField()
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
class Book(models.Model):
|
|
author = models.ForeignKey(Author)
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
class Magazine(models.Model):
|
|
authors = models.ManyToManyField(Author)
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
# Make a valid ProjectState and render it
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState.from_model(Author))
|
|
project_state.add_model(ModelState.from_model(Book))
|
|
project_state.add_model(ModelState.from_model(Magazine))
|
|
self.assertEqual(len(project_state.apps.get_models()), 3)
|
|
|
|
# now make an invalid one with a ForeignKey
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState.from_model(Book))
|
|
with self.assertRaises(ValueError):
|
|
project_state.apps
|
|
|
|
# and another with ManyToManyField
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState.from_model(Magazine))
|
|
with self.assertRaises(ValueError):
|
|
project_state.apps
|
|
|
|
def test_real_apps(self):
|
|
"""
|
|
Tests that including real apps can resolve dangling FK errors.
|
|
This test relies on the fact that contenttypes is always loaded.
|
|
"""
|
|
new_apps = Apps()
|
|
|
|
class TestModel(models.Model):
|
|
ct = models.ForeignKey("contenttypes.ContentType")
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
# If we just stick it into an empty state it should fail
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState.from_model(TestModel))
|
|
with self.assertRaises(ValueError):
|
|
project_state.apps
|
|
|
|
# If we include the real app it should succeed
|
|
project_state = ProjectState(real_apps=["contenttypes"])
|
|
project_state.add_model(ModelState.from_model(TestModel))
|
|
rendered_state = project_state.apps
|
|
self.assertEqual(
|
|
len([x for x in rendered_state.get_models() if x._meta.app_label == "migrations"]),
|
|
1,
|
|
)
|
|
|
|
def test_ignore_order_wrt(self):
|
|
"""
|
|
Makes sure ProjectState doesn't include OrderWrt fields when
|
|
making from existing models.
|
|
"""
|
|
new_apps = Apps()
|
|
|
|
class Author(models.Model):
|
|
name = models.TextField()
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
|
|
class Book(models.Model):
|
|
author = models.ForeignKey(Author)
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
order_with_respect_to = "author"
|
|
|
|
# Make a valid ProjectState and render it
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState.from_model(Author))
|
|
project_state.add_model(ModelState.from_model(Book))
|
|
self.assertEqual(
|
|
[name for name, field in project_state.models["migrations", "book"].fields],
|
|
["id", "author"],
|
|
)
|
|
|
|
def test_manager_refer_correct_model_version(self):
|
|
"""
|
|
#24147 - Tests that managers refer to the correct version of a
|
|
historical model
|
|
"""
|
|
project_state = ProjectState()
|
|
project_state.add_model(ModelState(
|
|
app_label="migrations",
|
|
name="Tag",
|
|
fields=[
|
|
("id", models.AutoField(primary_key=True)),
|
|
("hidden", models.BooleanField()),
|
|
],
|
|
managers=[
|
|
('food_mgr', FoodManager('a', 'b')),
|
|
('food_qs', FoodQuerySet.as_manager()),
|
|
]
|
|
))
|
|
|
|
old_model = project_state.apps.get_model('migrations', 'tag')
|
|
|
|
new_state = project_state.clone()
|
|
operation = RemoveField("tag", "hidden")
|
|
operation.state_forwards("migrations", new_state)
|
|
|
|
new_model = new_state.apps.get_model('migrations', 'tag')
|
|
|
|
self.assertIsNot(old_model, new_model)
|
|
self.assertIs(old_model, old_model.food_mgr.model)
|
|
self.assertIs(old_model, old_model.food_qs.model)
|
|
self.assertIs(new_model, new_model.food_mgr.model)
|
|
self.assertIs(new_model, new_model.food_qs.model)
|
|
self.assertIsNot(old_model.food_mgr, new_model.food_mgr)
|
|
self.assertIsNot(old_model.food_qs, new_model.food_qs)
|
|
self.assertIsNot(old_model.food_mgr.model, new_model.food_mgr.model)
|
|
self.assertIsNot(old_model.food_qs.model, new_model.food_qs.model)
|
|
|
|
|
|
class ModelStateTests(TestCase):
|
|
def test_custom_model_base(self):
|
|
state = ModelState.from_model(ModelWithCustomBase)
|
|
self.assertEqual(state.bases, (models.Model,))
|
|
|
|
def test_bound_field_sanity_check(self):
|
|
field = models.CharField(max_length=1)
|
|
field.model = models.Model
|
|
with self.assertRaisesMessage(ValueError,
|
|
'ModelState.fields cannot be bound to a model - "field" is.'):
|
|
ModelState('app', 'Model', [('field', field)])
|
|
|
|
def test_fields_immutability(self):
|
|
"""
|
|
Tests that rendering a model state doesn't alter its internal fields.
|
|
"""
|
|
apps = Apps()
|
|
field = models.CharField(max_length=1)
|
|
state = ModelState('app', 'Model', [('name', field)])
|
|
Model = state.render(apps)
|
|
self.assertNotEqual(Model._meta.get_field('name'), field)
|
|
|
|
def test_repr(self):
|
|
field = models.CharField(max_length=1)
|
|
state = ModelState('app', 'Model', [('name', field)], bases=['app.A', 'app.B', 'app.C'])
|
|
self.assertEqual(repr(state), "<ModelState: 'app.Model'>")
|
|
|
|
project_state = ProjectState()
|
|
project_state.add_model(state)
|
|
with self.assertRaisesMessage(InvalidBasesError, "Cannot resolve bases for [<ModelState: 'app.Model'>]"):
|
|
project_state.apps
|
|
|
|
@override_settings(TEST_SWAPPABLE_MODEL='migrations.SomeFakeModel')
|
|
def test_create_swappable(self):
|
|
"""
|
|
Tests making a ProjectState from an Apps with a swappable model
|
|
"""
|
|
new_apps = Apps(['migrations'])
|
|
|
|
class Author(models.Model):
|
|
name = models.CharField(max_length=255)
|
|
bio = models.TextField()
|
|
age = models.IntegerField(blank=True, null=True)
|
|
|
|
class Meta:
|
|
app_label = 'migrations'
|
|
apps = new_apps
|
|
swappable = 'TEST_SWAPPABLE_MODEL'
|
|
|
|
author_state = ModelState.from_model(Author)
|
|
self.assertEqual(author_state.app_label, 'migrations')
|
|
self.assertEqual(author_state.name, 'Author')
|
|
self.assertEqual([x for x, y in author_state.fields], ['id', 'name', 'bio', 'age'])
|
|
self.assertEqual(author_state.fields[1][1].max_length, 255)
|
|
self.assertEqual(author_state.fields[2][1].null, False)
|
|
self.assertEqual(author_state.fields[3][1].null, True)
|
|
self.assertEqual(author_state.options, {'swappable': 'TEST_SWAPPABLE_MODEL'})
|
|
self.assertEqual(author_state.bases, (models.Model, ))
|
|
self.assertEqual(author_state.managers, [])
|
|
|
|
@override_settings(TEST_SWAPPABLE_MODEL='migrations.SomeFakeModel')
|
|
def test_custom_manager_swappable(self):
|
|
"""
|
|
Tests making a ProjectState from unused models with custom managers
|
|
"""
|
|
new_apps = Apps(['migrations'])
|
|
|
|
class Food(models.Model):
|
|
|
|
food_mgr = FoodManager('a', 'b')
|
|
food_qs = FoodQuerySet.as_manager()
|
|
food_no_mgr = NoMigrationFoodManager('x', 'y')
|
|
|
|
class Meta:
|
|
app_label = "migrations"
|
|
apps = new_apps
|
|
swappable = 'TEST_SWAPPABLE_MODEL'
|
|
|
|
food_state = ModelState.from_model(Food)
|
|
|
|
# The default manager is used in migrations
|
|
self.assertEqual([name for name, mgr in food_state.managers], ['food_mgr'])
|
|
self.assertEqual(food_state.managers[0][1].args, ('a', 'b', 1, 2))
|
|
|
|
|
|
class RelatedModelsTests(SimpleTestCase):
|
|
|
|
def setUp(self):
|
|
self.apps = Apps(['migrations.related_models_app'])
|
|
|
|
def create_model(self, name, foreign_keys=[], bases=(), abstract=False, proxy=False):
|
|
test_name = 'related_models_app'
|
|
assert not (abstract and proxy)
|
|
meta_contents = {
|
|
'abstract': abstract,
|
|
'app_label': test_name,
|
|
'apps': self.apps,
|
|
'proxy': proxy,
|
|
}
|
|
meta = type(str("Meta"), tuple(), meta_contents)
|
|
if not bases:
|
|
bases = (models.Model,)
|
|
body = {
|
|
'Meta': meta,
|
|
'__module__': "__fake__",
|
|
}
|
|
fname_base = fname = '%s_%%d' % name.lower()
|
|
for i, fk in enumerate(foreign_keys, 1):
|
|
fname = fname_base % i
|
|
body[fname] = fk
|
|
return type(name, bases, body)
|
|
|
|
def assertRelated(self, model, needle):
|
|
self.assertEqual(
|
|
get_related_models_recursive(model),
|
|
{(n._meta.app_label, n._meta.model_name) for n in needle},
|
|
)
|
|
|
|
def test_unrelated(self):
|
|
A = self.create_model("A")
|
|
B = self.create_model("B")
|
|
self.assertRelated(A, [])
|
|
self.assertRelated(B, [])
|
|
|
|
def test_direct_fk(self):
|
|
A = self.create_model("A", foreign_keys=[models.ForeignKey('B')])
|
|
B = self.create_model("B")
|
|
self.assertRelated(A, [B])
|
|
self.assertRelated(B, [A])
|
|
|
|
def test_direct_hidden_fk(self):
|
|
A = self.create_model("A", foreign_keys=[models.ForeignKey('B', related_name='+')])
|
|
B = self.create_model("B")
|
|
self.assertRelated(A, [B])
|
|
self.assertRelated(B, [A])
|
|
|
|
def test_nested_fk(self):
|
|
A = self.create_model("A", foreign_keys=[models.ForeignKey('B')])
|
|
B = self.create_model("B", foreign_keys=[models.ForeignKey('C')])
|
|
C = self.create_model("C")
|
|
self.assertRelated(A, [B, C])
|
|
self.assertRelated(B, [A, C])
|
|
self.assertRelated(C, [A, B])
|
|
|
|
def test_two_sided(self):
|
|
A = self.create_model("A", foreign_keys=[models.ForeignKey('B')])
|
|
B = self.create_model("B", foreign_keys=[models.ForeignKey('A')])
|
|
self.assertRelated(A, [B])
|
|
self.assertRelated(B, [A])
|
|
|
|
def test_circle(self):
|
|
A = self.create_model("A", foreign_keys=[models.ForeignKey('B')])
|
|
B = self.create_model("B", foreign_keys=[models.ForeignKey('C')])
|
|
C = self.create_model("C", foreign_keys=[models.ForeignKey('A')])
|
|
self.assertRelated(A, [B, C])
|
|
self.assertRelated(B, [A, C])
|
|
self.assertRelated(C, [A, B])
|
|
|
|
def test_base(self):
|
|
A = self.create_model("A")
|
|
B = self.create_model("B", bases=(A,))
|
|
self.assertRelated(A, [B])
|
|
self.assertRelated(B, [A])
|
|
|
|
def test_nested_base(self):
|
|
A = self.create_model("A")
|
|
B = self.create_model("B", bases=(A,))
|
|
C = self.create_model("C", bases=(B,))
|
|
self.assertRelated(A, [B, C])
|
|
self.assertRelated(B, [A, C])
|
|
self.assertRelated(C, [A, B])
|
|
|
|
def test_multiple_bases(self):
|
|
A = self.create_model("A")
|
|
B = self.create_model("B")
|
|
C = self.create_model("C", bases=(A, B,))
|
|
self.assertRelated(A, [B, C])
|
|
self.assertRelated(B, [A, C])
|
|
self.assertRelated(C, [A, B])
|
|
|
|
def test_multiple_nested_bases(self):
|
|
A = self.create_model("A")
|
|
B = self.create_model("B")
|
|
C = self.create_model("C", bases=(A, B,))
|
|
D = self.create_model("D")
|
|
E = self.create_model("E", bases=(D,))
|
|
F = self.create_model("F", bases=(C, E,))
|
|
Y = self.create_model("Y")
|
|
Z = self.create_model("Z", bases=(Y,))
|
|
self.assertRelated(A, [B, C, D, E, F])
|
|
self.assertRelated(B, [A, C, D, E, F])
|
|
self.assertRelated(C, [A, B, D, E, F])
|
|
self.assertRelated(D, [A, B, C, E, F])
|
|
self.assertRelated(E, [A, B, C, D, F])
|
|
self.assertRelated(F, [A, B, C, D, E])
|
|
self.assertRelated(Y, [Z])
|
|
self.assertRelated(Z, [Y])
|
|
|
|
def test_base_to_base_fk(self):
|
|
A = self.create_model("A", foreign_keys=[models.ForeignKey('Y')])
|
|
B = self.create_model("B", bases=(A,))
|
|
Y = self.create_model("Y")
|
|
Z = self.create_model("Z", bases=(Y,))
|
|
self.assertRelated(A, [B, Y, Z])
|
|
self.assertRelated(B, [A, Y, Z])
|
|
self.assertRelated(Y, [A, B, Z])
|
|
self.assertRelated(Z, [A, B, Y])
|
|
|
|
def test_base_to_subclass_fk(self):
|
|
A = self.create_model("A", foreign_keys=[models.ForeignKey('Z')])
|
|
B = self.create_model("B", bases=(A,))
|
|
Y = self.create_model("Y")
|
|
Z = self.create_model("Z", bases=(Y,))
|
|
self.assertRelated(A, [B, Y, Z])
|
|
self.assertRelated(B, [A, Y, Z])
|
|
self.assertRelated(Y, [A, B, Z])
|
|
self.assertRelated(Z, [A, B, Y])
|
|
|
|
def test_direct_m2m(self):
|
|
A = self.create_model("A", foreign_keys=[models.ManyToManyField('B')])
|
|
B = self.create_model("B")
|
|
self.assertRelated(A, [A.a_1.through, B])
|
|
self.assertRelated(B, [A, A.a_1.through])
|
|
|
|
def test_direct_m2m_self(self):
|
|
A = self.create_model("A", foreign_keys=[models.ManyToManyField('A')])
|
|
self.assertRelated(A, [A.a_1.through])
|
|
|
|
def test_intermediate_m2m_self(self):
|
|
A = self.create_model("A", foreign_keys=[models.ManyToManyField('A', through='T')])
|
|
T = self.create_model("T", foreign_keys=[models.ForeignKey('A'), models.ForeignKey('A')])
|
|
self.assertRelated(A, [T])
|
|
self.assertRelated(T, [A])
|
|
|
|
def test_intermediate_m2m(self):
|
|
A = self.create_model("A", foreign_keys=[models.ManyToManyField('B', through='T')])
|
|
B = self.create_model("B")
|
|
T = self.create_model("T", foreign_keys=[models.ForeignKey('A'), models.ForeignKey('B')])
|
|
self.assertRelated(A, [B, T])
|
|
self.assertRelated(B, [A, T])
|
|
self.assertRelated(T, [A, B])
|
|
|
|
def test_intermediate_m2m_extern_fk(self):
|
|
A = self.create_model("A", foreign_keys=[models.ManyToManyField('B', through='T')])
|
|
B = self.create_model("B")
|
|
Z = self.create_model("Z")
|
|
T = self.create_model("T", foreign_keys=[
|
|
models.ForeignKey('A'), models.ForeignKey('B'), models.ForeignKey('Z'),
|
|
])
|
|
self.assertRelated(A, [B, T, Z])
|
|
self.assertRelated(B, [A, T, Z])
|
|
self.assertRelated(T, [A, B, Z])
|
|
self.assertRelated(Z, [A, B, T])
|
|
|
|
def test_intermediate_m2m_base(self):
|
|
A = self.create_model("A", foreign_keys=[models.ManyToManyField('B', through='T')])
|
|
B = self.create_model("B")
|
|
S = self.create_model("S")
|
|
T = self.create_model("T", foreign_keys=[models.ForeignKey('A'), models.ForeignKey('B')], bases=(S,))
|
|
self.assertRelated(A, [B, S, T])
|
|
self.assertRelated(B, [A, S, T])
|
|
self.assertRelated(S, [A, B, T])
|
|
self.assertRelated(T, [A, B, S])
|
|
|
|
def test_abstract_base(self):
|
|
A = self.create_model("A", abstract=True)
|
|
B = self.create_model("B", bases=(A,))
|
|
self.assertRelated(A, [B])
|
|
self.assertRelated(B, [])
|
|
|
|
def test_nested_abstract_base(self):
|
|
A = self.create_model("A", abstract=True)
|
|
B = self.create_model("B", bases=(A,), abstract=True)
|
|
C = self.create_model("C", bases=(B,))
|
|
self.assertRelated(A, [B, C])
|
|
self.assertRelated(B, [C])
|
|
self.assertRelated(C, [])
|
|
|
|
def test_proxy_base(self):
|
|
A = self.create_model("A")
|
|
B = self.create_model("B", bases=(A,), proxy=True)
|
|
self.assertRelated(A, [B])
|
|
self.assertRelated(B, [])
|
|
|
|
def test_nested_proxy_base(self):
|
|
A = self.create_model("A")
|
|
B = self.create_model("B", bases=(A,), proxy=True)
|
|
C = self.create_model("C", bases=(B,), proxy=True)
|
|
self.assertRelated(A, [B, C])
|
|
self.assertRelated(B, [C])
|
|
self.assertRelated(C, [])
|
|
|
|
def test_multiple_mixed_bases(self):
|
|
A = self.create_model("A", abstract=True)
|
|
M = self.create_model("M")
|
|
P = self.create_model("P")
|
|
Q = self.create_model("Q", bases=(P,), proxy=True)
|
|
Z = self.create_model("Z", bases=(A, M, Q))
|
|
# M has a pointer O2O field p_ptr to P
|
|
self.assertRelated(A, [M, P, Q, Z])
|
|
self.assertRelated(M, [P, Q, Z])
|
|
self.assertRelated(P, [M, Q, Z])
|
|
self.assertRelated(Q, [M, P, Z])
|
|
self.assertRelated(Z, [M, P, Q])
|