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# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
###############################################################################
# OpenLP - Open Source Lyrics Projection #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2019 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.common.db package.
"""
import gc
import os
import shutil
import time
from tempfile import mkdtemp
from unittest import TestCase
import sqlalchemy
from openlp.core.common.db import drop_column, drop_columns
from openlp.core.lib.db import get_upgrade_op, init_db
from tests.utils.constants import TEST_RESOURCES_PATH
class TestUtilsDBFunctions(TestCase):
def setUp(self):
"""
Create temp folder for keeping db file
"""
self.tmp_folder = mkdtemp()
db_path = os.path.join(TEST_RESOURCES_PATH, 'songs', 'songs-1.9.7.sqlite')
self.db_tmp_path = os.path.join(self.tmp_folder, 'songs-1.9.7.sqlite')
shutil.copyfile(db_path, self.db_tmp_path)
db_url = 'sqlite:///' + self.db_tmp_path
self.session, metadata = init_db(db_url)
self.op = get_upgrade_op(self.session)
def tearDown(self):
"""
Clean up
"""
self.session.close()
self.session = None
gc.collect()
retries = 0
while retries < 5:
try:
if os.path.exists(self.tmp_folder):
shutil.rmtree(self.tmp_folder)
break
except Exception:
time.sleep(1)
retries += 1
def test_delete_column(self):
"""
Test deleting a single column in a table
"""
# GIVEN: A temporary song db
# WHEN: Deleting a columns in a table
drop_column(self.op, 'songs', 'song_book_id')
# THEN: The column should have been deleted
meta = sqlalchemy.MetaData(bind=self.op.get_bind())
meta.reflect()
columns = meta.tables['songs'].columns
for column in columns:
if column.name == 'song_book_id':
self.fail("The column 'song_book_id' should have been deleted.")
def test_delete_columns(self):
"""
Test deleting multiple columns in a table
"""
# GIVEN: A temporary song db
# WHEN: Deleting a columns in a table
drop_columns(self.op, 'songs', ['song_book_id', 'song_number'])
# THEN: The columns should have been deleted
meta = sqlalchemy.MetaData(bind=self.op.get_bind())
meta.reflect()
columns = meta.tables['songs'].columns
for column in columns:
if column.name == 'song_book_id' or column.name == 'song_number':
self.fail("The column '%s' should have been deleted." % column.name)
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