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import os
import sys
from django.db.backends.creation import BaseDatabaseCreation
from django.utils.six.moves import input
class DatabaseCreation(BaseDatabaseCreation):
# SQLite doesn't actually support most of these types, but it "does the right
# thing" given more verbose field definitions, so leave them as is so that
# schema inspection is more useful.
data_types = {
'AutoField': 'integer',
'BinaryField': 'BLOB',
'BooleanField': 'bool',
'CharField': 'varchar(%(max_length)s)',
'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
'DateField': 'date',
'DateTimeField': 'datetime',
'DecimalField': 'decimal',
'FileField': 'varchar(%(max_length)s)',
'FilePathField': 'varchar(%(max_length)s)',
'FloatField': 'real',
'IntegerField': 'integer',
'BigIntegerField': 'bigint',
'IPAddressField': 'char(15)',
'GenericIPAddressField': 'char(39)',
'NullBooleanField': 'bool',
'OneToOneField': 'integer',
'PositiveIntegerField': 'integer unsigned',
'PositiveSmallIntegerField': 'smallint unsigned',
'SlugField': 'varchar(%(max_length)s)',
'SmallIntegerField': 'smallint',
'TextField': 'text',
'TimeField': 'time',
}
data_types_suffix = {
'AutoField': 'AUTOINCREMENT',
}
def sql_for_pending_references(self, model, style, pending_references):
"SQLite3 doesn't support constraints"
return []
def sql_remove_table_constraints(self, model, references_to_delete, style):
"SQLite3 doesn't support constraints"
return []
def _get_test_db_name(self):
test_database_name = self.connection.settings_dict['TEST']['NAME']
if test_database_name and test_database_name != ':memory:':
return test_database_name
return ':memory:'
def _create_test_db(self, verbosity, autoclobber):
test_database_name = self._get_test_db_name()
if test_database_name != ':memory:':
# Erase the old test database
if verbosity >= 1:
print("Destroying old test database '%s'..." % self.connection.alias)
if os.access(test_database_name, os.F_OK):
if not autoclobber:
confirm = input("Type 'yes' if you would like to try deleting the test database '%s', or 'no' to cancel: " % test_database_name)
if autoclobber or confirm == 'yes':
try:
os.remove(test_database_name)
except Exception as e:
sys.stderr.write("Got an error deleting the old test database: %s\n" % e)
sys.exit(2)
else:
print("Tests cancelled.")
sys.exit(1)
return test_database_name
def _destroy_test_db(self, test_database_name, verbosity):
if test_database_name and test_database_name != ":memory:":
# Remove the SQLite database file
os.remove(test_database_name)
def test_db_signature(self):
"""
Returns a tuple that uniquely identifies a test database.
This takes into account the special cases of ":memory:" and "" for
SQLite since the databases will be distinct despite having the same
TEST NAME. See http://www.sqlite.org/inmemorydb.html
"""
test_dbname = self._get_test_db_name()
sig = [self.connection.settings_dict['NAME']]
if test_dbname == ':memory:':
sig.append(self.connection.alias)
return tuple(sig)
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