def test_add_remove_dates(self):
        """
        Tests adding and removing dates.
        """
        # copy data to a temporary file
        src_file_path = os.path.join(BASE_DIR, u'data', u'days-off-with-expired-dates.txt')
        with codecs.open(src_file_path, 'r', 'utf-8') as f1:
            data = f1.read()
            with codecs.open(self.temp_file, 'w', 'utf-8') as f2:
                f2.write(data)

        parser = DaysOffParser()
        parser.load(self.temp_file)

        self.assertIn(u'MON', parser.get_my_days_off(u'alice'),
                      u"'MON' should be in alice's days-off list.")
        # remove
        parser.remove(u'alice', [u'MON'])
        self.assertIsNone(parser.get_my_days_off(u'alice'),
                          u"alice's days-off list should be empty after removal.")

        # add
        parser.add(u'alice', [u'WED'])
        self.assertIn(u'WED', parser.get_my_days_off(u'alice'),
                      u"'WED' should be in alice's days-off list after addition: %s")
        self.assertEqual(len(parser.get_my_days_off(u'alice')), 1,
                         u"'alice' should have only one day-off.")

        # add for a new person
        parser.add(u'charley', [u'MON'])
        self.assertIn(u'MON', parser.get_my_days_off(u'charley'),
                      u"'MON' should be in charley's days-off list after addition.")
    def test_read_file_with_expired_dates(self):
        """
        Tests reading a days-off file with expired dates.
        """
        # copy data to a temporary file
        src_file_path = os.path.join(BASE_DIR, u'data', u'days-off-with-expired-dates.txt')
        with codecs.open(src_file_path, 'r', 'utf-8') as f1:
            data = f1.read()
            with codecs.open(self.temp_file, 'w', 'utf-8') as f2:
                f2.write(data)

        parser = DaysOffParser()
        parser.load(self.temp_file)

        alice_days_off = parser.get_my_days_off(u'alice')
        self.assertNotIn(u'2016-01-02', alice_days_off,
                         u"'2016-01-02' should NOT be in alice's days-off list.")
        self.assertIn(u'MON', alice_days_off,
                      u"'MON' should be in alice's days-off list.")

        bob_days_off = parser.get_my_days_off(u'bob')
        self.assertNotIn(u'2016-01-01', bob_days_off,
                         u"'2016-01-01' should NOT be in bob's days-off list.")
        self.assertIn(u'TUE', bob_days_off,
                      u"'TUE' should be in bob's days-off list.")

        # check the written file
        with codecs.open(self.temp_file, 'r', 'utf-8') as f:
            lines = [l.strip() for l in f.readlines() if len(l.strip()) > 0]
        self.assertEqual(len(lines), 4,
                         u"should have 4 non-empty lines in the updated days-off file (got %s)." % repr(lines))
        self.assertEqual(u'[alice]', lines[0],
                         u"line '[alice]' not found in the updated days-off file.")
        self.assertEqual(u'MON', lines[1],
                         u"line 'MON' not found in the updated days-off file.")
        self.assertEqual(u'[bob]', lines[2],
                         u"line '[bob]' not found in the updated days-off file.")
        self.assertEqual(u'TUE', lines[3],
                         u"line 'TUE' not found in the updated days-off file.")