Class TestFormat

tests/test_parser.py:226–291

class TestFormat(object):

    def test_ybd(self):
        # If we have a 4-digit year, a non-numeric month (abbreviated or not),
        # and a day (1 or 2 digits), then there is no ambiguity as to which
        # token is a year/month/day.  This holds regardless of what order the
        # terms are in and for each of the separators below.

        seps = ['-', ' ', '/', '.']

        year_tokens = ['%Y']
        month_tokens = ['%b', '%B']
        day_tokens = ['%d']
        if PLATFORM_HAS_DASH_D:
            day_tokens.append('%-d')

        prods = itertools.product(year_tokens, month_tokens, day_tokens)
        perms = [y for x in prods for y in itertools.permutations(x)]
        unambig_fmts = [sep.join(perm) for sep in seps for perm in perms]

        actual = datetime(2003, 9, 25)

        for fmt in unambig_fmts:
            dstr = actual.strftime(fmt)
            res = parse(dstr)
            assert res == actual

    # TODO: some redundancy with PARSER_TEST_CASES cases
    @pytest.mark.parametrize("fmt,dstr", [
        ("%a %b %d %Y", "Thu Sep 25 2003"),
        ("%b %d %Y", "Sep 25 2003"),
        ("%Y-%m-%d", "2003-09-25"),
        ("%Y%m%d", "20030925"),
        ("%Y-%b-%d", "2003-Sep-25"),
        ("%d-%b-%Y", "25-Sep-2003"),
        ("%b-%d-%Y", "Sep-25-2003"),
        ("%m-%d-%Y", "09-25-2003"),
        ("%d-%m-%Y", "25-09-2003"),
        ("%Y.%m.%d", "2003.09.25"),
        ("%Y.%b.%d", "2003.Sep.25"),
        ("%d.%b.%Y", "25.Sep.2003"),
        ("%b.%d.%Y", "Sep.25.2003"),
        ("%m.%d.%Y", "09.25.2003"),
        ("%d.%m.%Y", "25.09.2003"),
        ("%Y/%m/%d", "2003/09/25"),
        ("%Y/%b/%d", "2003/Sep/25"),
        ("%d/%b/%Y", "25/Sep/2003"),
        ("%b/%d/%Y", "Sep/25/2003"),
        ("%m/%d/%Y", "09/25/2003"),
        ("%d/%m/%Y", "25/09/2003"),
        ("%Y %m %d", "2003 09 25"),
        ("%Y %b %d", "2003 Sep 25"),
        ("%d %b %Y", "25 Sep 2003"),
        ("%m %d %Y", "09 25 2003"),
        ("%d %m %Y", "25 09 2003"),
        ("%y %d %b", "03 25 Sep",),
    ])
    def test_strftime_formats_2003Sep25(self, fmt, dstr):