def test_optimize_through_fields(self):
"""
field-level through checking is working. This should manage to collapse
model Foo to nonexistence, and model Bar to a single IntegerField
called "width".
"""
self.assertOptimizesTo(
[
migrations.CreateModel(
"Foo", [("name", models.CharField(max_length=255))]),
migrations.CreateModel("Bar",
[("size", models.IntegerField())]),
migrations.AddField("Foo", "age", models.IntegerField()),
migrations.AddField("Bar", "width", models.IntegerField()),
migrations.AlterField("Foo", "age", models.IntegerField()),
migrations.RenameField("Bar", "size", "dimensions"),
migrations.RemoveField("Foo", "age"),
migrations.RenameModel("Foo", "Phou"),
migrations.RemoveField("Bar", "dimensions"),
migrations.RenameModel("Phou", "Fou"),
migrations.DeleteModel("Fou"),
],
[
migrations.CreateModel("Bar",
[("width", models.IntegerField())]),
],
)
def test_rename_model_self(self):
"""
RenameModels should absorb themselves.
"""
self.assertOptimizesTo(
[
migrations.RenameModel("Foo", "Baa"),
migrations.RenameModel("Baa", "Bar"),
],
[
migrations.RenameModel("Foo", "Bar"),
],
)
def test_create_rename_model(self):
"""
CreateModel should absorb RenameModels.
"""
managers = [('objects', EmptyManager())]
self.assertOptimizesTo(
[
migrations.CreateModel(
name="Foo",
fields=[("name", models.CharField(max_length=255))],
options={'verbose_name': 'Foo'},
bases=(UnicodeModel, ),
managers=managers,
),
migrations.RenameModel("Foo", "Bar"),
],
[
migrations.CreateModel(
"Bar",
[("name", models.CharField(max_length=255))],
options={'verbose_name': 'Foo'},
bases=(UnicodeModel, ),
managers=managers,
)
],
)
class Migration(migrations.Migration):
dependencies = [
('contenttypes_tests', '0001_initial'),
]
operations = [
migrations.RenameModel('Foo', 'RenamedFoo'),
migrations.RunPython(assert_foo_contenttype_not_cached,
migrations.RunPython.noop)
]
def test_optimize_elidable_operation(self):
elidable_operation = operations.base.Operation()
elidable_operation.elidable = True
self.assertOptimizesTo(
[
elidable_operation,
migrations.CreateModel(
"Foo", [("name", models.CharField(max_length=255))]),
elidable_operation,
migrations.CreateModel("Bar",
[("size", models.IntegerField())]),
elidable_operation,
migrations.RenameModel("Foo", "Phou"),
migrations.DeleteModel("Bar"),
elidable_operation,
],
[
migrations.CreateModel(
"Phou", [("name", models.CharField(max_length=255))]),
],
)