[server] Make connection pooler configurable and set better default values Drop the configuration connections-pool-size and add new configurations options: * connections-pool-min-size. Set to 0 by default so we open connections only when needed. This avoid opening min-size*processes connections at startup, which is, it think, a good default. * connections-pool-max-size. Set to 0 (unlimited) by default, so we move the bottleneck to postgresql. * connections-idle-timeout. Set to 10 minutes. I don't have arguments about this except that this is the default in pgbouncer.

import unittest

from cubicweb.web import http_headers


class TestGenerators(unittest.TestCase):
    def test_generate_true_false(self):
        for v in (True, 1, 'true', 'True', 'TRUE'):
            self.assertEqual('true', http_headers.generateTrueFalse(v))
        for v in (False, 0, 'false', 'False', 'FALSE'):
            self.assertEqual('false', http_headers.generateTrueFalse(v))

        with self.assertRaises(ValueError):
            http_headers.generateTrueFalse('any value')


if __name__ == '__main__':
    from unittest import main
    main()