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232 lines
12 KiB
Python
232 lines
12 KiB
Python
import copy
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import unittest
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from contextlib import contextmanager
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from io import StringIO
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from unittest import mock
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from django.db import DEFAULT_DB_ALIAS, connection, connections
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from django.db.backends.base.creation import (
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TEST_DATABASE_PREFIX, BaseDatabaseCreation,
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)
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from django.db.backends.mysql.creation import \
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DatabaseCreation as MySQLDatabaseCreation
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from django.db.backends.oracle.creation import \
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DatabaseCreation as OracleDatabaseCreation
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from django.db.backends.postgresql.creation import \
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DatabaseCreation as PostgreSQLDatabaseCreation
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from django.db.utils import DatabaseError
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from django.test import SimpleTestCase, TestCase
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class TestDbSignatureTests(SimpleTestCase):
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def get_connection_copy(self):
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# Get a copy of the default connection. (Can't use django.db.connection
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# because it'll modify the default connection itself.)
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test_connection = copy.copy(connections[DEFAULT_DB_ALIAS])
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test_connection.settings_dict = copy.copy(connections[DEFAULT_DB_ALIAS].settings_dict)
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return test_connection
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def test_default_name(self):
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# A test db name isn't set.
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prod_name = 'hodor'
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test_connection = self.get_connection_copy()
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test_connection.settings_dict['NAME'] = prod_name
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test_connection.settings_dict['TEST'] = {'NAME': None}
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signature = BaseDatabaseCreation(test_connection).test_db_signature()
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self.assertEqual(signature[3], TEST_DATABASE_PREFIX + prod_name)
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def test_custom_test_name(self):
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# A regular test db name is set.
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test_name = 'hodor'
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test_connection = self.get_connection_copy()
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test_connection.settings_dict['TEST'] = {'NAME': test_name}
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signature = BaseDatabaseCreation(test_connection).test_db_signature()
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self.assertEqual(signature[3], test_name)
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def test_custom_test_name_with_test_prefix(self):
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# A test db name prefixed with TEST_DATABASE_PREFIX is set.
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test_name = TEST_DATABASE_PREFIX + 'hodor'
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test_connection = self.get_connection_copy()
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test_connection.settings_dict['TEST'] = {'NAME': test_name}
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signature = BaseDatabaseCreation(test_connection).test_db_signature()
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self.assertEqual(signature[3], test_name)
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@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL-specific tests")
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class PostgreSQLDatabaseCreationTests(SimpleTestCase):
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@contextmanager
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def changed_test_settings(self, **kwargs):
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settings = connection.settings_dict['TEST']
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saved_values = {}
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for name in kwargs:
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if name in settings:
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saved_values[name] = settings[name]
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for name, value in kwargs.items():
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settings[name] = value
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try:
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yield
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finally:
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for name, value in kwargs.items():
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if name in saved_values:
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settings[name] = saved_values[name]
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else:
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del settings[name]
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def check_sql_table_creation_suffix(self, settings, expected):
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with self.changed_test_settings(**settings):
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creation = PostgreSQLDatabaseCreation(connection)
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suffix = creation.sql_table_creation_suffix()
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self.assertEqual(suffix, expected)
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def test_sql_table_creation_suffix_with_none_settings(self):
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settings = dict(CHARSET=None, TEMPLATE=None)
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self.check_sql_table_creation_suffix(settings, "")
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def test_sql_table_creation_suffix_with_encoding(self):
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settings = dict(CHARSET='UTF8')
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self.check_sql_table_creation_suffix(settings, "WITH ENCODING 'UTF8'")
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def test_sql_table_creation_suffix_with_template(self):
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settings = dict(TEMPLATE='template0')
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self.check_sql_table_creation_suffix(settings, 'WITH TEMPLATE "template0"')
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def test_sql_table_creation_suffix_with_encoding_and_template(self):
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settings = dict(CHARSET='UTF8', TEMPLATE='template0')
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self.check_sql_table_creation_suffix(settings, '''WITH ENCODING 'UTF8' TEMPLATE "template0"''')
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def _execute_raise_database_already_exists(self, cursor, parameters, keepdb=False):
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raise DatabaseError('database %s already exists' % parameters['dbname'])
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def _execute_raise_permission_denied(self, cursor, parameters, keepdb=False):
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raise DatabaseError('permission denied to create database')
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def patch_test_db_creation(self, execute_create_test_db):
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return mock.patch.object(BaseDatabaseCreation, '_execute_create_test_db', execute_create_test_db)
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@mock.patch('sys.stdout', new_callable=StringIO)
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@mock.patch('sys.stderr', new_callable=StringIO)
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def test_create_test_db(self, *mocked_objects):
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creation = PostgreSQLDatabaseCreation(connection)
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# Simulate test database creation raising "database already exists"
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with self.patch_test_db_creation(self._execute_raise_database_already_exists):
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with mock.patch('builtins.input', return_value='no'):
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with self.assertRaises(SystemExit):
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# SystemExit is raised if the user answers "no" to the
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# prompt asking if it's okay to delete the test database.
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creation._create_test_db(verbosity=0, autoclobber=False, keepdb=False)
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# "Database already exists" error is ignored when keepdb is on
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creation._create_test_db(verbosity=0, autoclobber=False, keepdb=True)
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# Simulate test database creation raising unexpected error
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with self.patch_test_db_creation(self._execute_raise_permission_denied):
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with self.assertRaises(SystemExit):
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creation._create_test_db(verbosity=0, autoclobber=False, keepdb=False)
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with self.assertRaises(SystemExit):
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creation._create_test_db(verbosity=0, autoclobber=False, keepdb=True)
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@unittest.skipUnless(connection.vendor == 'oracle', "Oracle specific tests")
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@mock.patch.object(OracleDatabaseCreation, '_maindb_connection', return_value=connection)
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@mock.patch('sys.stdout', new_callable=StringIO)
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@mock.patch('sys.stderr', new_callable=StringIO)
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class OracleDatabaseCreationTests(TestCase):
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def _execute_raise_user_already_exists(self, cursor, statements, parameters, verbosity, allow_quiet_fail=False):
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# Raise "user already exists" only in test user creation
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if statements and statements[0].startswith('CREATE USER'):
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raise DatabaseError("ORA-01920: user name 'string' conflicts with another user or role name")
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def _execute_raise_tablespace_already_exists(
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self, cursor, statements, parameters, verbosity, allow_quiet_fail=False
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):
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raise DatabaseError("ORA-01543: tablespace 'string' already exists")
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def _execute_raise_insufficient_privileges(
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self, cursor, statements, parameters, verbosity, allow_quiet_fail=False
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):
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raise DatabaseError("ORA-01031: insufficient privileges")
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def _test_database_passwd(self):
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# Mocked to avoid test user password changed
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return connection.settings_dict['SAVED_PASSWORD']
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def patch_execute_statements(self, execute_statements):
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return mock.patch.object(OracleDatabaseCreation, '_execute_statements', execute_statements)
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@mock.patch.object(OracleDatabaseCreation, '_test_user_create', return_value=False)
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def test_create_test_db(self, *mocked_objects):
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creation = OracleDatabaseCreation(connection)
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# Simulate test database creation raising "tablespace already exists"
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with self.patch_execute_statements(self._execute_raise_tablespace_already_exists):
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with mock.patch('builtins.input', return_value='no'):
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with self.assertRaises(SystemExit):
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# SystemExit is raised if the user answers "no" to the
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# prompt asking if it's okay to delete the test tablespace.
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creation._create_test_db(verbosity=0, keepdb=False)
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# "Tablespace already exists" error is ignored when keepdb is on
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creation._create_test_db(verbosity=0, keepdb=True)
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# Simulate test database creation raising unexpected error
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with self.patch_execute_statements(self._execute_raise_insufficient_privileges):
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with self.assertRaises(SystemExit):
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creation._create_test_db(verbosity=0, keepdb=False)
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with self.assertRaises(SystemExit):
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creation._create_test_db(verbosity=0, keepdb=True)
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@mock.patch.object(OracleDatabaseCreation, '_test_database_create', return_value=False)
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def test_create_test_user(self, *mocked_objects):
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creation = OracleDatabaseCreation(connection)
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with mock.patch.object(OracleDatabaseCreation, '_test_database_passwd', self._test_database_passwd):
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# Simulate test user creation raising "user already exists"
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with self.patch_execute_statements(self._execute_raise_user_already_exists):
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with mock.patch('builtins.input', return_value='no'):
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with self.assertRaises(SystemExit):
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# SystemExit is raised if the user answers "no" to the
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# prompt asking if it's okay to delete the test user.
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creation._create_test_db(verbosity=0, keepdb=False)
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# "User already exists" error is ignored when keepdb is on
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creation._create_test_db(verbosity=0, keepdb=True)
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# Simulate test user creation raising unexpected error
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with self.patch_execute_statements(self._execute_raise_insufficient_privileges):
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with self.assertRaises(SystemExit):
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creation._create_test_db(verbosity=0, keepdb=False)
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with self.assertRaises(SystemExit):
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creation._create_test_db(verbosity=0, keepdb=True)
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@unittest.skipUnless(connection.vendor == 'mysql', "MySQL specific tests")
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class MySQLDatabaseCreationTests(SimpleTestCase):
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def _execute_raise_database_exists(self, cursor, parameters, keepdb=False):
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raise DatabaseError(1007, "Can't create database '%s'; database exists" % parameters['dbname'])
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def _execute_raise_access_denied(self, cursor, parameters, keepdb=False):
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raise DatabaseError(1044, "Access denied for user")
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def patch_test_db_creation(self, execute_create_test_db):
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return mock.patch.object(BaseDatabaseCreation, '_execute_create_test_db', execute_create_test_db)
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@mock.patch('sys.stdout', new_callable=StringIO)
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@mock.patch('sys.stderr', new_callable=StringIO)
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def test_create_test_db_database_exists(self, *mocked_objects):
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# Simulate test database creation raising "database exists"
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creation = MySQLDatabaseCreation(connection)
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with self.patch_test_db_creation(self._execute_raise_database_exists):
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with mock.patch('builtins.input', return_value='no'):
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with self.assertRaises(SystemExit):
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# SystemExit is raised if the user answers "no" to the
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# prompt asking if it's okay to delete the test database.
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creation._create_test_db(verbosity=0, autoclobber=False, keepdb=False)
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# "Database exists" shouldn't appear when keepdb is on
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creation._create_test_db(verbosity=0, autoclobber=False, keepdb=True)
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@mock.patch('sys.stdout', new_callable=StringIO)
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@mock.patch('sys.stderr', new_callable=StringIO)
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def test_create_test_db_unexpected_error(self, *mocked_objects):
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# Simulate test database creation raising unexpected error
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creation = MySQLDatabaseCreation(connection)
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with self.patch_test_db_creation(self._execute_raise_access_denied):
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with self.assertRaises(SystemExit):
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creation._create_test_db(verbosity=0, autoclobber=False, keepdb=False)
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