def METHOD_NAME(self):
    delete = self.text.delete
    get = self.text.get
    Equal = self.assertEqual
    self.text.insert('1.0', self.hw)
    delete('1.0')
    Equal(get('1.0', '1.end'), 'ello')
    delete('1.0', '1.1')
    Equal(get('1.0', '1.end'), 'llo')
    # delete \n and combine 2 lines into 1
    delete('1.end')
    Equal(get('1.0', '1.end'), 'lloworld')
    self.text.insert('1.3', '\n')
    delete('1.10')
    Equal(get('1.0', '1.end'), 'lloworld')
    self.text.insert('1.3', '\n')
    delete('1.3', '2.0')
    Equal(get('1.0', '1.end'), 'lloworld')