#!/usr/bin/python3.4
# Note: Many of those tests fail in MySQL_python version 1.2.3 and earlier
# because byte strings are returned instead of unicode for columns having
# a _bin collation, see https://sourceforge.net/p/mysql-python/bugs/289/
# This has been fixed in MySQL_python version 1.2.4.
import MySQLdb
import unittest


def exec_sql(sql):
    db = MySQLdb.connect(db='philipp_winterrodeln_wiki', charset='utf8', use_unicode=True)
    # db = MySQLdb.connect(db='philipp_winterrodeln_wiki', charset='utf8', use_unicode=False)
    cursor = db.cursor()
    cursor.execute(sql)
    row = cursor.fetchone()
    return row


class TestMySqlPython(unittest.TestCase):
    def test_datatype_page(self):
        result = exec_sql('select page_title, page_restrictions, page_touched from page where page_id = 1321')
        assert type(result[0]) == str # varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
        assert type(result[1]) == bytes  # tinyblob NOT NULL
        assert type(result[2]) == bytes  # binary(14) NOT NULL


    def test_datatype_revision(self):
        result = exec_sql('select rev_comment, rev_user_text, rev_timestamp from revision where rev_id = 7586')
        assert type(result[0]) == bytes  # tinyblob NOT NULL
        assert type(result[1]) == str # varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
        assert type(result[2]) == bytes  # binary(14) NOT NULL


    def test_datatypes_text(self):
        result = exec_sql('select old_text, old_flags from text where old_id = 7438')
        assert type(result[0]) == bytes # mediumblob NOT NULL
        assert type(result[1]) == bytes # tinyblob NOT NULL


    def test_datatype_user(self):
        result = exec_sql('select user_name, user_real_name, user_email from user where user_id = 1')
        assert type(result[0]) == str # varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
        assert type(result[1]) == str # varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
        assert type(result[2]) == str # tinytext NOT NULL
        assert result[0] == 'Philipp'


    def test_datatype_categorylinks(self):
        result = exec_sql('select cl_to, cl_sortkey from categorylinks where cl_from = 609')
        assert type(result[0]) == str # varchar(255) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
        assert type(result[1]) == bytes  # varbinary(230) NOT NULL