new_contents: #!/usr/bin/python3
  # -*- coding: utf-8 -*-
  
  """
  Test code for 'grouping' widget used by Morse Trainer.
  """
  
  import sys
  from grouping import Grouping
  from PyQt5.QtWidgets import (QApplication, QWidget, QHBoxLayout,
                               QVBoxLayout, QPushButton)
  
  
  class TestGrouping(QWidget):
      """Application to demonstrate the Morse Trainer 'grouping' widget."""
  
      def __init__(self):
          super().__init__()
          self.initUI()
  
  
      def initUI(self):
          self.grouping = Grouping()
  
          vbox = QVBoxLayout()
          vbox.addWidget(self.grouping)
  
          self.setLayout(vbox)
  
          self.setGeometry(100, 100, 800, 200)
          self.setWindowTitle('Example of Grouping widget')
          self.show()
  
  
  app = QApplication(sys.argv)
  ex = TestGrouping()
  sys.exit(app.exec())
  
subject: Test code for 'grouping' module