old_contents: """Tests regarding instantiating classes"""
  
  from pycounter import report
  
  
  def test_counter_journal():
      journal = report.CounterJournal()
      assert journal.issn == u""
  
new_contents: """Tests regarding instantiating classes"""
  
  from pycounter import report
  import datetime
  
  
  def test_counter_journal():
      journal = report.CounterJournal()
      assert journal.issn == u""
  
  
  def test_report_gaps():
      journal = report.CounterJournal(
          period=(datetime.date(2018, 1, 1), datetime.date(2018, 3, 1)),
          month_data=[(datetime.date(2018, 1, 1), 50),
                      (datetime.date(2018, 3, 1), 99),
                      ]
      )
  
      output_data = journal.as_generic()
      assert output_data[11] == '0'
      assert output_data[12] == '99'
  
subject: add test for gaps in stats being output correctly