def test_parse_time_absolute_datetime(self):
"""
Absolute timestamps in the form ``HH:MM_YYYYMMDD`` are parsed into
appropriate datetimes with seconds set to zero.
"""
self.assertEqual(parse_time("00:00_20150201", None),
datetime(2015, 2, 1, 0, 0, 0))
self.assertEqual(parse_time("00:00_19700101", None),
datetime(1970, 1, 1, 0, 0, 0))
def test_parse_time_absolute_datetime(self):
"""
Absolute timestamps in the form ``HH:MM_YYYYMMDD`` are parsed into
appropriate datetimes with seconds set to zero.
"""
self.assertEqual(
parse_time("00:00_20150201", None), datetime(2015, 2, 1, 0, 0, 0))
self.assertEqual(
parse_time("00:00_19700101", None), datetime(1970, 1, 1, 0, 0, 0))
def _predict_data_size(self, start, end, interval):
"""
Use the start and end times and interval size to predict the number of
data points being requested.
"""
now = datetime.utcnow()
# "end" can be earlier than "start".
period = abs(parse_time(end, now) - parse_time(start, now))
interval_secs = interval_to_seconds(interval)
return (period.seconds + 86400 * period.days) / interval_secs
def test_parse_time_absolute_date(self):
"""
Absolute timestamps in the form ``YYYYMMDD`` are parsed into
appropriate datetimes with the time set to midnight.
"""
self.assertEqual(
parse_time("20150201", None), datetime(2015, 2, 1, 0, 0, 0))
self.assertEqual(
parse_time("19700101", None), datetime(1970, 1, 1, 0, 0, 0))
self.assertEqual(
parse_time("19010101", None), datetime(1901, 1, 1, 0, 0, 0))
self.assertEqual(
parse_time("99991231", None), datetime(9999, 12, 31, 0, 0, 0))
def test_parse_time_absolute_date(self):
"""
Absolute timestamps in the form ``YYYYMMDD`` are parsed into
appropriate datetimes with the time set to midnight.
"""
self.assertEqual(parse_time("20150201", None),
datetime(2015, 2, 1, 0, 0, 0))
self.assertEqual(parse_time("19700101", None),
datetime(1970, 1, 1, 0, 0, 0))
self.assertEqual(parse_time("19010101", None),
datetime(1901, 1, 1, 0, 0, 0))
self.assertEqual(parse_time("99991231", None),
datetime(9999, 12, 31, 0, 0, 0))
def test_parse_time_unix_timestamp(self):
"""
Unix timestamps are accepted as absolute time specifications.
"""
self.assertEqual(
parse_time("1422748800", None), datetime(2015, 2, 1, 0, 0, 0))
self.assertEqual(parse_time("0", None), datetime(1970, 1, 1, 0, 0, 0))
# The following are treated as unix timestamps, not YYYYMMDD strings.
self.assertEqual(
parse_time("19000101", None), datetime(1970, 8, 8, 21, 48, 21))
self.assertEqual(
parse_time("20150132", None), datetime(1970, 8, 22, 5, 15, 32))
self.assertEqual(
parse_time("20151301", None), datetime(1970, 8, 22, 5, 35, 1))
def test_parse_time_unix_timestamp(self):
"""
Unix timestamps are accepted as absolute time specifications.
"""
self.assertEqual(parse_time("1422748800", None),
datetime(2015, 2, 1, 0, 0, 0))
self.assertEqual(parse_time("0", None), datetime(1970, 1, 1, 0, 0, 0))
# The following are treated as unix timestamps, not YYYYMMDD strings.
self.assertEqual(parse_time("19000101", None),
datetime(1970, 8, 8, 21, 48, 21))
self.assertEqual(parse_time("20150132", None),
datetime(1970, 8, 22, 5, 15, 32))
self.assertEqual(parse_time("20151301", None),
datetime(1970, 8, 22, 5, 35, 1))
def test_parse_time_with_interval(self):
"""
If given a time_str starting with "-", the time is parsed as an
interval prior to "now".
"""
now = datetime(2015, 2, 1, 0, 0, 0)
self.assertEqual(parse_time("-0s", now), now)
self.assertEqual(parse_time("-1s", now),
datetime(2015, 1, 31, 23, 59, 59))
self.assertEqual(parse_time("-1s", now),
datetime(2015, 1, 31, 23, 59, 59))
self.assertEqual(parse_time("-2w", now),
datetime(2015, 1, 18, 0, 0, 0))
self.assertEqual(parse_time("-2w", datetime(2015, 1, 24, 10, 15, 25)),
datetime(2015, 1, 10, 10, 15, 25))
def test_parse_time_with_interval(self):
"""
If given a time_str starting with "-", the time is parsed as an
interval prior to "now".
"""
now = datetime(2015, 2, 1, 0, 0, 0)
self.assertEqual(parse_time("-0s", now), now)
self.assertEqual(
parse_time("-1s", now), datetime(2015, 1, 31, 23, 59, 59))
self.assertEqual(
parse_time("-1s", now), datetime(2015, 1, 31, 23, 59, 59))
self.assertEqual(
parse_time("-2w", now), datetime(2015, 1, 18, 0, 0, 0))
self.assertEqual(
parse_time("-2w", datetime(2015, 1, 24, 10, 15, 25)),
datetime(2015, 1, 10, 10, 15, 25))
def test_parse_time_special_values(self):
"""
The strings "now", "yesterday", "today", and "tomorrow" return what one
might expect.
"""
now1 = datetime(2015, 2, 1, 0, 0, 0)
now2 = datetime(2015, 1, 24, 10, 15, 25)
self.assertEqual(parse_time("now", now1), now1)
self.assertEqual(parse_time("now", now2), now2)
self.assertEqual(
parse_time("yesterday", now1), datetime(2015, 1, 31, 0, 0, 0))
self.assertEqual(
parse_time("yesterday", now2), datetime(2015, 1, 23, 10, 15, 25))
self.assertEqual(parse_time("today", now1), now1)
self.assertEqual(parse_time("today", now2), now2)
self.assertEqual(
parse_time("tomorrow", now1), datetime(2015, 2, 2, 0, 0, 0))
self.assertEqual(
parse_time("tomorrow", now2), datetime(2015, 1, 25, 10, 15, 25))
def test_parse_time_special_values(self):
"""
The strings "now", "yesterday", "today", and "tomorrow" return what one
might expect.
"""
now1 = datetime(2015, 2, 1, 0, 0, 0)
now2 = datetime(2015, 1, 24, 10, 15, 25)
self.assertEqual(parse_time("now", now1), now1)
self.assertEqual(parse_time("now", now2), now2)
self.assertEqual(parse_time("yesterday", now1),
datetime(2015, 1, 31, 0, 0, 0))
self.assertEqual(parse_time("yesterday", now2),
datetime(2015, 1, 23, 10, 15, 25))
self.assertEqual(parse_time("today", now1), now1)
self.assertEqual(parse_time("today", now2), now2)
self.assertEqual(parse_time("tomorrow", now1),
datetime(2015, 2, 2, 0, 0, 0))
self.assertEqual(parse_time("tomorrow", now2),
datetime(2015, 1, 25, 10, 15, 25))