new_contents: # Tai Sakuma <tai.sakuma@gmail.com>
  import pytest
  
  from alphatwirl.progressbar import BProgressMonitor, NullProgressMonitor, ProgressMonitor
  
  ##__________________________________________________________________||
  def build_BProgressMonitor():
      return BProgressMonitor(presentation=None)
  
  def build_ProgressMonitor():
      return ProgressMonitor(presentation=None)
  
  def build_NullProgressMonitor():
      return NullProgressMonitor()
  
  builds = [build_BProgressMonitor, build_ProgressMonitor, build_NullProgressMonitor]
  build_ids = ['BProgressMonitor', 'ProgressMonitor', 'NullProgressMonitor']
  
  ##__________________________________________________________________||
  @pytest.mark.parametrize('build', builds, ids=build_ids)
  def test_monitor(build):
      obj = build()
      obj.begin()
      obj.createReporter()
      obj.end()
  
  ##__________________________________________________________________||
  
subject: add tests/unit/progressbar/test_monitor.py