# Copyright 2018 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from unittest.mock import MagicMock

import psycopg2.pool
import sqlalchemy


def test_main():
    import main_mysql
    main_mysql.pymysql = MagicMock()
    fetchall_mock = main_mysql.pymysql.connect().cursor().__enter__().fetchall
    fetchall_mock.return_value = [['0']]

    main_mysql.app.testing = True
    client = main_mysql.app.test_client()

    r = client.get('/')
    assert r.status_code == 200
    assert '0' in r.data.decode('utf-8')


def test_main_pooling():
    sqlalchemy.create_engine = MagicMock()

    import main_mysql_pooling

    cnx_mock = main_mysql_pooling.sqlalchemy.create_engine().connect()
    cnx_mock.execute().fetchall.return_value = [['0']]

    main_mysql_pooling.app.testing = True
    client = main_mysql_pooling.app.test_client()

    r = client.get('/')
    assert r.status_code == 200
    assert '0' in r.data.decode('utf-8')


def test_main_postgressql():
    import main_postgres
    main_postgres.psycopg2.connect = MagicMock()
    mock_cursor = main_postgres.psycopg2.connect().cursor()
    mock_cursor.__enter__().fetchall.return_value = [['0']]

    main_postgres.app.testing = True
    client = main_postgres.app.test_client()

    r = client.get('/')
    assert r.status_code == 200
    assert '0' in r.data.decode('utf-8')


def test_main_postgressql_pooling():
    psycopg2.pool.ThreadedConnectionPool = MagicMock()

    import main_postgres_pooling

    mock_pool = main_postgres_pooling.psycopg2.pool.ThreadedConnectionPool()
    mock_pool.getconn().cursor().__enter__().fetchall.return_value = [['0']]

    main_postgres_pooling.app.testing = True
    client = main_postgres_pooling.app.test_client()

    r = client.get('/')
    assert r.status_code == 200
    assert '0' in r.data.decode('utf-8')