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86 lines
3.8 KiB
Python
86 lines
3.8 KiB
Python
import subprocess
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import unittest
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from io import StringIO
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from unittest import mock
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from django.db import DatabaseError, connection
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from django.db.backends.base.creation import BaseDatabaseCreation
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from django.db.backends.mysql.creation import DatabaseCreation
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from django.test import SimpleTestCase
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@unittest.skipUnless(connection.vendor == 'mysql', 'MySQL tests')
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class DatabaseCreationTests(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 = DatabaseCreation(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 = DatabaseCreation(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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def test_clone_test_db_database_exists(self):
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creation = DatabaseCreation(connection)
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with self.patch_test_db_creation(self._execute_raise_database_exists):
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with mock.patch.object(DatabaseCreation, '_clone_db') as _clone_db:
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creation._clone_test_db('suffix', verbosity=0, keepdb=True)
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_clone_db.assert_not_called()
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def test_clone_test_db_options_ordering(self):
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creation = DatabaseCreation(connection)
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try:
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saved_settings = connection.settings_dict
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connection.settings_dict = {
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'NAME': 'source_db',
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'USER': '',
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'PASSWORD': '',
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'PORT': '',
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'HOST': '',
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'ENGINE': 'django.db.backends.mysql',
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'OPTIONS': {
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'read_default_file': 'my.cnf',
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},
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}
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with mock.patch.object(subprocess, 'Popen') as mocked_popen:
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creation._clone_db('source_db', 'target_db')
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mocked_popen.assert_has_calls([
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mock.call(
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[
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'mysqldump',
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'--defaults-file=my.cnf',
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'--routines',
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'--events',
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'source_db',
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],
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stdout=subprocess.PIPE,
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env=None,
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),
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])
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finally:
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connection.settings_dict = saved_settings
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