def test_sort_method(self):
""" Test self.sort() method. """
test_file = FileAsObj()
test_file.sorted = False
test_file.add('3')
test_file.add('2')
test_file.add('1')
self.assertTrue(test_file.changed)
self.assertIsNone(test_file.sort())
self.assertTrue(test_file.contents == ['1', '2', '3'])
def example_sort_in_place():
""" To sort contents in place after the file is read. """
my_file = FileAsObj('/tmp/example_file.txt')
my_file.sort()
