How to use test_dump_accounts_existing_file method in tempest

Best Python code snippet using tempest_python

test_account_generator.py

Source:test_account_generator.py

...262        self.assertEqual(3, len([x for x in accounts if 'roles' in x]))263        for account in accounts:264            self.assertIn('resources', account)265            self.assertIn('network', account.get('resources'))266    def test_dump_accounts_existing_file(self):267        self.useFixture(fixtures.MockPatch('os.path.exists',268                                           return_value=True))269        rename_mock = self.useFixture(fixtures.MockPatch('os.rename')).mock270        backup_file = '.'.join((self.opts.accounts, 'bak'))271        mocked_open = mock.mock_open()272        with mock.patch('{}.open'.format(account_generator.__name__),273                        mocked_open, create=True):274            with mock.patch('yaml.safe_dump') as yaml_dump_mock:275                account_generator.setup_logging()276                account_generator.dump_accounts(self.resources,277                                                self.opts.identity_version,278                                                self.opts.accounts)279        rename_mock.assert_called_once_with(self.opts.accounts, backup_file)280        mocked_open.assert_called_once_with(self.opts.accounts, 'w')...

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