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
  # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  # OTHER DEALINGS IN THE SOFTWARE.
  #
  # test_txn08.py
  # Printlog: test Unicode output
  #
  
  from suite_subprocess import suite_subprocess
  import wttest
  from wtscenario import make_scenarios
  
  class test_txn08(wttest.WiredTigerTestCase, suite_subprocess):
      logmax = "100K"
      tablename = 'test_txn08'
      uri = 'table:' + tablename
  
      key_format_values = [
          ('col', dict(key_format='r')),
          ('row', dict(key_format='i'))
      ]
      scenarios = make_scenarios(key_format_values)
  
      # Turn on logging for this test.
      def conn_config(self):
          return 'log=(enabled,file_max=%s,remove=false),' % self.logmax + \
              'transaction_sync="(method=dsync,enabled)"'
  
      def test_printlog_unicode(self):
          create_params = 'key_format={},value_format=S'.format(self.key_format)
          # print "Creating %s with config '%s'" % (self.uri, create_params)
          self.session.create(self.uri, create_params)
          c = self.session.open_cursor(self.uri, None)
  
          # We want to test some chars that produce Unicode encoding
          # for printlog output.
          value = u'\u0001\u0002abcd\u0003\u0004'
  
          self.session.begin_transaction()
          for k in range(1, 6):
              c[k] = value
  
          self.session.commit_transaction()
  
          #
          # Run printlog and make sure it exits with zero status.
          #
          self.runWt(['printlog', '-u'], outfilename='printlog.out')
          self.check_file_contains('printlog.out',
              '\\u0001\\u0002abcd\\u0003\\u0004')
          self.runWt(['printlog', '-u','-x'], outfilename='printlog-hex.out')
          self.check_file_contains('printlog-hex.out',
              '\\u0001\\u0002abcd\\u0003\\u0004')
          self.check_file_contains('printlog-hex.out',
              '0102616263640304')
          # Check the printlog start LSN and stop LSN feature.
          self.runWt(['printlog', '-l 2,128'], outfilename='printlog-range01.out')
          self.check_file_contains('printlog-range01.out',
              '"lsn" : [2,128],')
          self.check_file_contains('printlog-range01.out',
              '"lsn" : [2,256],')
          self.check_file_not_contains('printlog-range01.out',
              '"lsn" : [1,128],')
          self.runWt(['printlog', '-l 2,128,3,128'], outfilename='printlog-range02.out')
          self.check_file_contains('printlog-range02.out',
              '"lsn" : [2,128],')
          self.check_file_not_contains('printlog-range02.out',
              '"lsn" : [1,128],')
          self.check_file_not_contains('printlog-range02.out',
              '"lsn" : [3,256],')
          # Test for invalid LSN, return WT_NOTFOUND
          self.runWt(['printlog', '-l 2,300'], outfilename='printlog-range03.out', errfilename='printlog-range03.err', failure=True)
          self.check_file_contains('printlog-range03.err','WT_NOTFOUND')
          # Test for Start > end, print the start lsn and then stop
          self.runWt(['printlog', '-l 3,128,2,128'], outfilename='printlog-range04.out')
          self.check_file_contains('printlog-range04.out','"lsn" : [3,128],')
          self.check_file_not_contains('printlog-range04.out','"lsn" : [3,256],')
          # Test for usage error, print the usage message if arguments are invalid
          self.runWt(['printlog', '-l'], outfilename='printlog-range05.out', errfilename='printlog-range05.err', failure=True)
          self.check_file_contains('printlog-range05.err','wt: option requires an argument -- l')
          # Test start and end offset of 0
          self.runWt(['printlog', '-l 2,0,3,0'], outfilename='printlog-range06.out')
          self.check_file_contains('printlog-range06.out',
              '"lsn" : [2,128],')
          self.check_file_not_contains('printlog-range06.out',
              '"lsn" : [1,128],')
          self.check_file_not_contains('printlog-range06.out',
              '"lsn" : [3,256],')
          # Test for start == end
          self.runWt(['printlog', '-l 1,256,1,256'], outfilename='printlog-range07.out')
          self.check_file_contains('printlog-range07.out',
              '"lsn" : [1,256],')
          self.check_file_not_contains('printlog-range07.out',
              '"lsn" : [1,128],')
          self.check_file_not_contains('printlog-range07.out',
              '"lsn" : [1,384],')
  
  if __name__ == '__main__':
      wttest.run()
  