openlp/tests/functional/openlp_core_lib/test_db.py

148 lines
7.9 KiB
Python

# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
###############################################################################
# OpenLP - Open Source Lyrics Projection #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2016 OpenLP Developers #
# --------------------------------------------------------------------------- #
# This program is free software; you can redistribute it and/or modify it #
# under the terms of the GNU General Public License as published by the Free #
# Software Foundation; version 2 of the License. #
# #
# This program is distributed in the hope that it will be useful, but WITHOUT #
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
# more details. #
# #
# You should have received a copy of the GNU General Public License along #
# with this program; if not, write to the Free Software Foundation, Inc., 59 #
# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
###############################################################################
"""
Package to test the openlp.core.lib package.
"""
import os
from unittest import TestCase
from sqlalchemy.pool import NullPool
from sqlalchemy.orm.scoping import ScopedSession
from sqlalchemy import MetaData
from openlp.core.lib.db import init_db, get_upgrade_op, delete_database
from tests.functional import patch, MagicMock
class TestDB(TestCase):
"""
A test case for all the tests for the :mod:`~openlp.core.lib.db` module.
"""
def init_db_calls_correct_functions_test(self):
"""
Test that the init_db function makes the correct function calls
"""
# GIVEN: Mocked out SQLAlchemy calls and return objects, and an in-memory SQLite database URL
with patch('openlp.core.lib.db.create_engine') as mocked_create_engine, \
patch('openlp.core.lib.db.MetaData') as MockedMetaData, \
patch('openlp.core.lib.db.sessionmaker') as mocked_sessionmaker, \
patch('openlp.core.lib.db.scoped_session') as mocked_scoped_session:
mocked_engine = MagicMock()
mocked_metadata = MagicMock()
mocked_sessionmaker_object = MagicMock()
mocked_scoped_session_object = MagicMock()
mocked_create_engine.return_value = mocked_engine
MockedMetaData.return_value = mocked_metadata
mocked_sessionmaker.return_value = mocked_sessionmaker_object
mocked_scoped_session.return_value = mocked_scoped_session_object
db_url = 'sqlite://'
# WHEN: We try to initialise the db
session, metadata = init_db(db_url)
# THEN: We should see the correct function calls
mocked_create_engine.assert_called_with(db_url, poolclass=NullPool)
MockedMetaData.assert_called_with(bind=mocked_engine)
mocked_sessionmaker.assert_called_with(autoflush=True, autocommit=False, bind=mocked_engine)
mocked_scoped_session.assert_called_with(mocked_sessionmaker_object)
self.assertIs(session, mocked_scoped_session_object, 'The ``session`` object should be the mock')
self.assertIs(metadata, mocked_metadata, 'The ``metadata`` object should be the mock')
def init_db_defaults_test(self):
"""
Test that initialising an in-memory SQLite database via ``init_db`` uses the defaults
"""
# GIVEN: An in-memory SQLite URL
db_url = 'sqlite://'
# WHEN: The database is initialised through init_db
session, metadata = init_db(db_url)
# THEN: Valid session and metadata objects should be returned
self.assertIsInstance(session, ScopedSession, 'The ``session`` object should be a ``ScopedSession`` instance')
self.assertIsInstance(metadata, MetaData, 'The ``metadata`` object should be a ``MetaData`` instance')
def get_upgrade_op_test(self):
"""
Test that the ``get_upgrade_op`` function creates a MigrationContext and an Operations object
"""
# GIVEN: Mocked out alembic classes and a mocked out SQLAlchemy session object
with patch('openlp.core.lib.db.MigrationContext') as MockedMigrationContext, \
patch('openlp.core.lib.db.Operations') as MockedOperations:
mocked_context = MagicMock()
mocked_op = MagicMock()
mocked_connection = MagicMock()
MockedMigrationContext.configure.return_value = mocked_context
MockedOperations.return_value = mocked_op
mocked_session = MagicMock()
mocked_session.bind.connect.return_value = mocked_connection
# WHEN: get_upgrade_op is executed with the mocked session object
op = get_upgrade_op(mocked_session)
# THEN: The op object should be mocked_op, and the correction function calls should have been made
self.assertIs(op, mocked_op, 'The return value should be the mocked object')
mocked_session.bind.connect.assert_called_with()
MockedMigrationContext.configure.assert_called_with(mocked_connection)
MockedOperations.assert_called_with(mocked_context)
def delete_database_without_db_file_name_test(self):
"""
Test that the ``delete_database`` function removes a database file, without the file name parameter
"""
# GIVEN: Mocked out AppLocation class and delete_file method, a test plugin name and a db location
with patch('openlp.core.lib.db.AppLocation') as MockedAppLocation, \
patch('openlp.core.lib.db.delete_file') as mocked_delete_file:
MockedAppLocation.get_section_data_path.return_value = 'test-dir'
mocked_delete_file.return_value = True
test_plugin = 'test'
test_location = os.path.join('test-dir', test_plugin)
# WHEN: delete_database is run without a database file
result = delete_database(test_plugin)
# THEN: The AppLocation.get_section_data_path and delete_file methods should have been called
MockedAppLocation.get_section_data_path.assert_called_with(test_plugin)
mocked_delete_file.assert_called_with(test_location)
self.assertTrue(result, 'The result of delete_file should be True (was rigged that way)')
def delete_database_with_db_file_name_test(self):
"""
Test that the ``delete_database`` function removes a database file, with the file name supplied
"""
# GIVEN: Mocked out AppLocation class and delete_file method, a test plugin name and a db location
with patch('openlp.core.lib.db.AppLocation') as MockedAppLocation, \
patch('openlp.core.lib.db.delete_file') as mocked_delete_file:
MockedAppLocation.get_section_data_path.return_value = 'test-dir'
mocked_delete_file.return_value = False
test_plugin = 'test'
test_db_file = 'mydb.sqlite'
test_location = os.path.join('test-dir', test_db_file)
# WHEN: delete_database is run without a database file
result = delete_database(test_plugin, test_db_file)
# THEN: The AppLocation.get_section_data_path and delete_file methods should have been called
MockedAppLocation.get_section_data_path.assert_called_with(test_plugin)
mocked_delete_file.assert_called_with(test_location)
self.assertFalse(result, 'The result of delete_file should be False (was rigged that way)')