text: #!/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.
  #
  # Anyone is free to copy, modify, publish, use, compile, sell, or
  # distribute this software, either in source code form or as a compiled
  # binary, for any purpose, commercial or non-commercial, and by any
  # means.
  #
  # In jurisdictions that recognize copyright laws, the author or authors
  # of this software dedicate any and all copyright interest in the
  # software to the public domain. We make this dedication for the benefit
  # of the public at large and to the detriment of our heirs and
  # successors. We intend this dedication to be an overt act of
  # relinquishment in perpetuity of all present and future rights to this
  # software under copyright law.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  # IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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  import wttest, wiredtiger
  
  # test_debug_mode06.py
  #   Test the debug mode settings. Test slow_checkpoint use (from WT-4981).
  #   Note: testing timing will make results unreliable so we won't do that.
  class test_debug_mode06(wttest.WiredTigerTestCase):
      conn_config = 'debug_mode=(slow_checkpoint=true),statistics=(all)'
      uri = 'file:test_debug_mode06'
  
      # Insert some data to ensure setting/unsetting the flag does not
      # break existing functionality
      def insert_data(self, assert_time=0):
          self.session.create(self.uri, 'key_format=s,value_format=s')
          self.cursor = self.session.open_cursor(self.uri, None)
          self.cursor['key'] = 'value'
          self.cursor.close()
          self.session.checkpoint()
  
          # Validate checkpoint time if asked for.
          if (assert_time > 0):
              stat_cur = self.session.open_cursor('statistics:', None, None)
              checkpoint_time = int(stat_cur[wiredtiger.stat.conn.txn_checkpoint_time_recent][2])
              self.assertTrue(checkpoint_time >= assert_time)
              stat_cur.close()
  
      # Make flag works when set.
      def test_slow_checkpoints(self):
          # Ensure the checkpoint takes at least 10ms (the delay we have set).
          self.insert_data(10)
  
      # Make sure the flag can be 'turned off' as well.
      def test_slow_checkpoints_off(self):
          conn_reconfig = 'debug_mode=(slow_checkpoint=false)'
          self.conn.reconfigure(conn_reconfig)
          self.insert_data()
  
  if __name__ == '__main__':
      wttest.run()
  