def test_too_long_char_field_under_mysql(self):
from django.db.backends.mysql.validation import DatabaseValidation
class Model(models.Model):
field = models.CharField(unique=True, max_length=256)
field = Model._meta.get_field('field')
validator = DatabaseValidation(connection=connection)
self.assertEqual(validator.check_field(field), [
Error(
'MySQL does not allow unique CharFields to have a max_length > 255.',
obj=field,
id='mysql.E001',
)
])
def test_too_long_char_field_under_mysql(self):
from django.db.backends.mysql.validation import DatabaseValidation
class Model(models.Model):
field = models.CharField(unique=True, max_length=256)
field = Model._meta.get_field('field')
validator = DatabaseValidation(connection=connection)
self.assertEqual(validator.check_field(field), [
Error(
'MySQL does not allow unique CharFields to have a max_length > 255.',
obj=field,
id='mysql.E001',
)
])
def __init__(self, *args, **kwargs):
super(DatabaseWrapper, self).__init__(*args, **kwargs)
self.features = DatabaseFeatures(self)
self.ops = DatabaseOperations(self)
self.client = DatabaseClient(self)
self.creation = DatabaseCreation(self)
self.introspection = DatabaseIntrospection(self)
self.validation = DatabaseValidation(self)
def test_too_long_char_field_under_mysql(self):
from django.db.backends.mysql.validation import DatabaseValidation
class Model(models.Model):
field = models.CharField(unique=True, max_length=256)
field = Model._meta.get_field('field')
validator = DatabaseValidation(connection=None)
errors = validator.check_field(field)
expected = [
Error(
('Under mysql backend, the field cannot have a "max_length" '
'greated than 255 when it is unique.'),
hint=None,
obj=field,
id='E047',
)
]
self.assertEqual(errors, expected)
def test_too_long_char_field_under_mysql(self):
from django.db.backends.mysql.validation import DatabaseValidation
class Model(models.Model):
field = models.CharField(unique=True, max_length=256)
field = Model._meta.get_field('field')
validator = DatabaseValidation(connection=connection)
self.assertEqual(validator.check_field(field), [
DjangoWarning(
'%s may not allow unique CharFields to have a max_length > '
'255.' % connection.display_name,
hint=(
'See: https://docs.djangoproject.com/en/%s/ref/databases/'
'#mysql-character-fields' % get_docs_version()),
obj=field,
id='mysql.W003',
)
])
def test_too_long_char_field_under_mysql(self):
from django.db.backends.mysql.validation import DatabaseValidation
class Model(models.Model):
field = models.CharField(unique=True, max_length=256)
field = Model._meta.get_field('field')
validator = DatabaseValidation(connection=None)
errors = validator.check_field(field)
expected = [
Error(
('Under mysql backend, the field cannot have a "max_length" '
'greated than 255 when it is unique.'),
hint=None,
obj=field,
id='E047',
)
]
self.assertEqual(errors, expected)
def __init__(self, *args, **kwargs):
super(DatabaseWrapper, self).__init__(*args, **kwargs)
self.server_version = None
self.features = DatabaseFeatures()
self.ops = mysqldb_base.DatabaseOperations()
self.client = DatabaseClient(self)
self.creation = DatabaseCreation(self)
self.introspection = DatabaseIntrospection(self)
self.validation = DatabaseValidation(self)
self.pool = None
def __init__(self, *args, **kwargs):
super(DatabaseWrapper, self).__init__(*args, **kwargs)
self.server_version = None
self.features = DatabaseFeatures(self)
self.ops = DatabaseOperations(self)
self.client = DatabaseClient(self)
self.creation = DatabaseCreation(self) #数据库创建器, from django.db.backends.mysql.creation import DatabaseCreation
self.introspection = DatabaseIntrospection(self)
self.validation = DatabaseValidation(self)
