76 lines
3.1 KiB
Python
76 lines
3.1 KiB
Python
import os
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import sys
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from django.core.exceptions import ImproperlyConfigured
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from django.db.backends.creation import BaseDatabaseCreation
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from django.utils.six.moves import input
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class DatabaseCreation(BaseDatabaseCreation):
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def sql_for_pending_references(self, model, style, pending_references):
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"SQLite3 doesn't support constraints"
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return []
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def sql_remove_table_constraints(self, model, references_to_delete, style):
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"SQLite3 doesn't support constraints"
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return []
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def _get_test_db_name(self):
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test_database_name = self.connection.settings_dict['TEST']['NAME']
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if test_database_name and test_database_name != ':memory:':
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if 'mode=memory' in test_database_name:
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raise ImproperlyConfigured(
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"Using `mode=memory` parameter in the database name is not allowed, "
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"use `:memory:` instead."
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)
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return test_database_name
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if self.connection.features.can_share_in_memory_db:
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return 'file:memorydb_%s?mode=memory&cache=shared' % self.connection.alias
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return ':memory:'
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def _create_test_db(self, verbosity, autoclobber, keepdb=False):
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test_database_name = self._get_test_db_name()
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if keepdb:
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return test_database_name
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if not self.connection.is_in_memory_db(test_database_name):
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# Erase the old test database
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if verbosity >= 1:
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print("Destroying old test database '%s'..." % self.connection.alias)
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if os.access(test_database_name, os.F_OK):
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if not autoclobber:
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confirm = input(
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"Type 'yes' if you would like to try deleting the test "
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"database '%s', or 'no' to cancel: " % test_database_name
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)
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if autoclobber or confirm == 'yes':
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try:
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os.remove(test_database_name)
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except Exception as e:
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sys.stderr.write("Got an error deleting the old test database: %s\n" % e)
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sys.exit(2)
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else:
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print("Tests cancelled.")
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sys.exit(1)
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return test_database_name
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def _destroy_test_db(self, test_database_name, verbosity):
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if test_database_name and not self.connection.is_in_memory_db(test_database_name):
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# Remove the SQLite database file
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os.remove(test_database_name)
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def test_db_signature(self):
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"""
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Returns a tuple that uniquely identifies a test database.
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This takes into account the special cases of ":memory:" and "" for
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SQLite since the databases will be distinct despite having the same
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TEST NAME. See http://www.sqlite.org/inmemorydb.html
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"""
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test_database_name = self._get_test_db_name()
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sig = [self.connection.settings_dict['NAME']]
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if self.connection.is_in_memory_db(test_database_name):
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sig.append(self.connection.alias)
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return tuple(sig)
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