def test_tzinfo(self):
# Verify that tzinfo works correctly.
ts1 = 294217199000 # In EST
ts2 = 294217200000 # In EDT (spring forward, we skip ahead by 1 hour)
utc_dt1 = datetime(1979, 4, 29, 6, 59, 59)
utc_dt2 = datetime(1979, 4, 29, 7, 0, 0)
self.assertEqual(
moment.tz(ts1).datetime().strftime(fmt), '1979-04-29 06:59:59 UTC')
self.assertEqual(
moment.tz(ts2).datetime().strftime(fmt), '1979-04-29 07:00:00 UTC')
# Verify that we get correct time zone variation depending on DST status.
nyc_dt1 = moment.tz(ts1, 'America/New_York').datetime()
nyc_dt2 = moment.tz(ts2, 'America/New_York').datetime()
self.assertEqual(nyc_dt1.strftime(fmt), '1979-04-29 01:59:59 EST')
self.assertEqual(nyc_dt2.strftime(fmt), '1979-04-29 03:00:00 EDT')
# Make sure we can get timestamps back from these datatimes.
self.assertEqual(moment.dt_to_ts(nyc_dt1) * 1000, ts1)
self.assertEqual(moment.dt_to_ts(nyc_dt2) * 1000, ts2)
# Verify that the datetime objects we get produce correct time zones in terms of DST when we
# manipulate them. NOTE: it is a bit unexpected that we add 1hr + 1sec rather than just 1sec,
# but it seems like that is how Python datetime works. Note that timezone does get switched
# correctly between EDT and EST.
self.assertEqual(nyc_dt1 + timedelta(seconds=3601), nyc_dt2)
self.assertEqual(nyc_dt2 - timedelta(seconds=3601), nyc_dt1)
self.assertEqual((nyc_dt1 + timedelta(seconds=3601)).strftime(fmt),
'1979-04-29 03:00:00 EDT')
self.assertEqual((nyc_dt2 - timedelta(seconds=3601)).strftime(fmt),
'1979-04-29 01:59:59 EST')
def test_standard_entry(self):
name = "America/New_York"
data = self.new_york
for entry in data:
date = entry[0]
timestamp = entry[1]
m = moment.tz(date).tz(name)
mts = moment.tz(timestamp, name)
self.assertMatches(entry, m)
self.assertMatches(entry, mts)
error_data = self.new_york_errors
for entry in error_data:
name = entry[0]
date = entry[1]
error = entry[2]
self.assertRaises(error, moment.tz, date, name)
def test_zone_entry(self):
name = "America/Los_Angeles"
data = self.los_angeles
for entry in data:
date = entry[0]
timestamp = entry[1]
m = moment.tz(date, name)
self.assertMatches(entry, m)
def test_zone(self):
name = "America/New_York"
tzinfo = moment.tzinfo(name)
data = self.new_york
for entry in data:
date = entry[0]
ts = entry[1]
abbr = entry[2]
offset = entry[3]
dt = moment.tz(ts, name).datetime()
self.assertEqual(dt.tzname(), abbr)
self.assertEqual(dt.utcoffset(), timedelta(minutes=-offset))
def parse(date_string,
parse_format,
zonelabel='UTC',
override_current_date=None):
"""Parse a date string via a moment.js style parse format and a timezone string.
Supported tokens are documented above. Returns seconds since epoch"""
if parse_format in FORMAT_CACHE:
# Check if parse_format has been cache, and retrieve if so
parser = FORMAT_CACHE[parse_format]
else:
# e.g. "MM-YY" -> "(?P<mm>\d{1,2})-(?P<yy>\d{2})"
# Note that DATE_TOKENS is ordered so that the longer letter chains are recognized first
tokens = DATE_TOKENS_REGEX.split(parse_format)
tokens = [
DATE_TOKENS[t] if t in DATE_TOKENS else SEP_REGEX.sub(SEP, t)
for t in tokens
]
# Compile new token string ignoring case (for month names)
parser = re.compile(''.join(tokens), re.I)
FORMAT_CACHE[parse_format] = parser
match = parser.match(date_string)
# Throw error if matching failed
if match is None:
raise Exception("Failed to parse %s with %s" %
(date_string, parse_format))
# Create datetime from the results of parsing
current_date = override_current_date or moment.CURRENT_DATE
m = match.groupdict()
dt = datetime(year=getYear(m, current_date.year),
month=getMonth(m, current_date.month),
day=int(m['D']) if ('D' in m) else current_date.day,
hour=getHour(m),
minute=int(m['m']) if ('m' in m) else 0,
second=int(m['s']) if ('s' in m) else 0,
microsecond=getMicrosecond(m))
# Parses the datetime with the given timezone to return the seconds since EPOCH
return moment.tz(dt, zonelabel).timestamp_s()