#!/usr/bin/env python

from __future__ import absolute_import
from __future__ import print_function

import optparse
import os
import sys
import unittest

if __name__ == '__main__':
    parser = optparse.OptionParser()
    parser.add_option('--coverage', dest='coverage',
                      action="store_true",
                      default=False, help='Compute test coverage.')
    (options, _) = parser.parse_args()

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

    tools_dir = os.path.dirname(os.path.abspath(__file__))
    root_dir = dir_join(tools_dir, '..')
    tools_test_dir = dir_join(tools_dir, 'tests')

    sys.path.insert(0, root_dir)

    loader = unittest.TestLoader() # type: ignore # https://github.com/python/typeshed/issues/372

    if options.coverage:
        import coverage
        cov = coverage.Coverage(omit="*/zulip-venv-cache/*")
        cov.start()

    suite = loader.discover(start_dir=tools_test_dir, top_level_dir=root_dir)
    runner = unittest.TextTestRunner(verbosity=2)
    result = runner.run(suite) # type: ignore # https://github.com/python/typeshed/issues/372
    if result.errors or result.failures:
        raise Exception('Test failed!')

    if options.coverage:
        cov.stop()
        cov.save()
        cov.html_report(directory='var/tools_coverage')
        print("HTML report saved to var/tools_coverage")

    print('SUCCESS')