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Fixed #26521 -- Validated CreateModel bases, fields and managers for duplicates.

This commit is contained in:
James Robert 2016-04-27 12:43:56 -04:00 committed by Simon Charette
parent 6729b96d8a
commit 417e083e55
3 changed files with 86 additions and 12 deletions
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20
django/db/migrations/operations/models.py
View File

@ -12,6 +12,16 @@ from .fields import (
)
def _check_for_duplicates(arg_name, objs):
used_vals = set()
for val in objs:
if val in used_vals:
raise ValueError(
'Found duplicate %s in CreateModel operation.' % arg_name
)
used_vals.add(val)
class ModelOperation(Operation):
def __init__(self, name):
self.name = name
@ -43,6 +53,16 @@ class CreateModel(ModelOperation):
self.bases = bases or (models.Model,)
self.managers = managers or []
super(CreateModel, self).__init__(name)
# Sanity-check that there are no duplicated field names, bases, or
# manager names
_check_for_duplicates("field", (name for name, _ in self.fields))
_check_for_duplicates(
"base",
(base._meta.label_lower if isinstance(base, models.base.ModelBase) else base.lower()
for base in self.bases
if base is not models.Model)
)
_check_for_duplicates("manager", (name for name, _ in self.managers))
def deconstruct(self):
kwargs = {

56
tests/migrations/test_operations.py
View File

@ -10,7 +10,7 @@ from django.db.transaction import atomic
from django.db.utils import IntegrityError
from django.test import override_settings, skipUnlessDBFeature
from .models import FoodManager, FoodQuerySet
from .models import FoodManager, FoodQuerySet, UnicodeModel
from .test_base import MigrationTestBase
try:
@ -200,6 +200,60 @@ class OperationTests(OperationTestBase):
definition = operation.deconstruct()
self.assertNotIn('managers', definition[2])
def test_create_model_with_duplicate_field_name(self):
with self.assertRaisesMessage(ValueError, "Found duplicate field in CreateModel operation."):
migrations.CreateModel(
"Pony",
[
("id", models.AutoField(primary_key=True)),
("pink", models.TextField()),
("pink", models.IntegerField(default=1)),
],
)
def test_create_model_with_duplicate_base(self):
with self.assertRaisesMessage(ValueError, "Found duplicate base in CreateModel operation."):
migrations.CreateModel(
"Pony",
fields=[],
bases=("test_crmo.Pony", "test_crmo.Pony",),
)
with self.assertRaisesMessage(ValueError, "Found duplicate base in CreateModel operation."):
migrations.CreateModel(
"Pony",
fields=[],
bases=(UnicodeModel, UnicodeModel,),
)
with self.assertRaisesMessage(ValueError, "Found duplicate base in CreateModel operation."):
migrations.CreateModel(
"Pony",
fields=[],
bases=("test_crmo.Pony", "test_crmo.pony",),
)
with self.assertRaisesMessage(ValueError, "Found duplicate base in CreateModel operation."):
migrations.CreateModel(
"Pony",
fields=[],
bases=(UnicodeModel, 'migrations.unicodemodel',),
)
with self.assertRaisesMessage(ValueError, "Found duplicate base in CreateModel operation."):
migrations.CreateModel(
"Pony",
fields=[],
bases=(UnicodeModel, 'migrations.UnicodeModel',),
)
def test_create_model_with_duplicate_manager_name(self):
with self.assertRaisesMessage(ValueError, "Found duplicate manager in CreateModel operation."):
migrations.CreateModel(
"Pony",
fields=[],
managers=[
("objects", models.Manager()),
("objects", models.Manager()),
],
)
def test_create_model_with_unique_after(self):
"""
Tests the CreateModel operation directly followed by an

22
tests/migrations/test_optimizer.py
View File

@ -5,7 +5,7 @@ from django.db.migrations import operations
from django.db.migrations.optimizer import MigrationOptimizer
from django.test import SimpleTestCase
from .models import CustomModelBase, EmptyManager
from .models import EmptyManager, UnicodeModel
class OptimizerTests(SimpleTestCase):
@ -71,7 +71,7 @@ class OptimizerTests(SimpleTestCase):
name="Foo",
fields=[("name", models.CharField(max_length=255))],
options={'verbose_name': 'Foo'},
bases=(CustomModelBase),
bases=(UnicodeModel,),
managers=managers,
),
migrations.RenameModel("Foo", "Bar"),
@ -81,7 +81,7 @@ class OptimizerTests(SimpleTestCase):
"Bar",
[("name", models.CharField(max_length=255))],
options={'verbose_name': 'Foo'},
bases=(CustomModelBase),
bases=(UnicodeModel,),
managers=managers,
)
],
@ -237,7 +237,7 @@ class OptimizerTests(SimpleTestCase):
name="Foo",
fields=[("name", models.CharField(max_length=255))],
options={'verbose_name': 'Foo'},
bases=(CustomModelBase),
bases=(UnicodeModel,),
managers=managers,
),
migrations.AddField("Foo", "age", models.IntegerField()),
@ -250,7 +250,7 @@ class OptimizerTests(SimpleTestCase):
("age", models.IntegerField()),
],
options={'verbose_name': 'Foo'},
bases=(CustomModelBase),
bases=(UnicodeModel,),
managers=managers,
),
],
@ -309,7 +309,7 @@ class OptimizerTests(SimpleTestCase):
name="Foo",
fields=[("name", models.CharField(max_length=255))],
options={'verbose_name': 'Foo'},
bases=(CustomModelBase),
bases=(UnicodeModel,),
managers=managers,
),
migrations.AlterField("Foo", "name", models.IntegerField()),
@ -321,7 +321,7 @@ class OptimizerTests(SimpleTestCase):
("name", models.IntegerField()),
],
options={'verbose_name': 'Foo'},
bases=(CustomModelBase),
bases=(UnicodeModel,),
managers=managers,
),
],
@ -338,7 +338,7 @@ class OptimizerTests(SimpleTestCase):
name="Foo",
fields=[("name", models.CharField(max_length=255))],
options={'verbose_name': 'Foo'},
bases=(CustomModelBase),
bases=(UnicodeModel,),
managers=managers,
),
migrations.RenameField("Foo", "name", "title"),
@ -350,7 +350,7 @@ class OptimizerTests(SimpleTestCase):
("title", models.CharField(max_length=255)),
],
options={'verbose_name': 'Foo'},
bases=(CustomModelBase),
bases=(UnicodeModel,),
managers=managers,
),
],
@ -401,7 +401,7 @@ class OptimizerTests(SimpleTestCase):
("age", models.IntegerField()),
],
options={'verbose_name': 'Foo'},
bases=(CustomModelBase),
bases=(UnicodeModel,),
managers=managers,
),
migrations.RemoveField("Foo", "age"),
@ -413,7 +413,7 @@ class OptimizerTests(SimpleTestCase):
("name", models.CharField(max_length=255)),
],
options={'verbose_name': 'Foo'},
bases=(CustomModelBase),
bases=(UnicodeModel,),
managers=managers,
),
],