#!/usr/bin/env python

from __future__ import absolute_import
from __future__ import print_function

import argparse
import os
import sys
import unittest
from unittest import TestCase

def dir_join(dir1, dir2):
    # type: (str, str) -> str
    return os.path.abspath(os.path.join(dir1, dir2))


if __name__ == '__main__':
    description = 'Script to run test_<bot>.py files in bots/<bot> directories'
    parser = argparse.ArgumentParser(description=description)
    parser.add_argument('--bot',
                        nargs=1,
                        type=str,
                        action='store',
                        help='test specified single bot')
    args = parser.parse_args()

    bots_dir = os.path.dirname(os.path.abspath(__file__))
    root_dir = dir_join(bots_dir, '..')
    bots_test_dir = dir_join(bots_dir, 'bots')

    sys.path.insert(0, root_dir)

    # mypy doesn't recognize the TestLoader attribute, even though the code
    # is executable
    loader = unittest.TestLoader() # type: ignore
    if args.bot is not None:
        bots_test_dir = dir_join(bots_test_dir, args.bot[0])
    suite = loader.discover(start_dir=bots_test_dir, top_level_dir=root_dir)
    runner = unittest.TextTestRunner(verbosity=2)
    # same issue as for TestLoader
    result = runner.run(suite) # type: ignore
    if result.errors or result.failures:
        raise Exception('Test failed!')