#!/usr/bin/env python
#
# Public Domain 2014-present MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
#
# This is free and unencumbered software released into the public domain.
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import helper, wiredtiger, wttest
from time import sleep
from wiredtiger import stat

# test_stat06.py
#    Check that statistics are started or stopped when intended
class test_stat06(wttest.WiredTigerTestCase):

    def test_stats_on(self):
        self.close_conn()
        self.conn = self.wiredtiger_open(None, "statistics=(fast)")
        self.stats_gathered(True)

    def test_stats_off(self):
        self.close_conn()
        self.conn = self.wiredtiger_open(None, "statistics=(none),statistics_log=(json)")
        self.stats_gathered(False)

    def stats_gathered(self, stats_expected):
        self.session = self.conn.open_session()
        self.session.create("table:foo", None)
        self.session.create("table:bar", None)
        sleep(2)
        if stats_expected:
            stat_cursor = self.session.open_cursor('statistics:', None, None)
            self.assertTrue(stat_cursor[stat.conn.file_open][2] > 0)
        else:
            msg = '/database statistics configuration/'
            self.assertRaisesWithMessage(wiredtiger.WiredTigerError, lambda:
                self.session.open_cursor('statistics:', None, None), msg)

if __name__ == '__main__':
    wttest.run()