core/tests/util/test_dt.py

267 lines
8.3 KiB
Python

"""Test Home Assistant date util methods."""
from datetime import datetime, timedelta
import pytest
import homeassistant.util.dt as dt_util
DEFAULT_TIME_ZONE = dt_util.DEFAULT_TIME_ZONE
TEST_TIME_ZONE = 'America/Los_Angeles'
def teardown():
"""Stop everything that was started."""
dt_util.set_default_time_zone(DEFAULT_TIME_ZONE)
def test_get_time_zone_retrieves_valid_time_zone():
"""Test getting a time zone."""
time_zone = dt_util.get_time_zone(TEST_TIME_ZONE)
assert time_zone is not None
assert TEST_TIME_ZONE == time_zone.zone
def test_get_time_zone_returns_none_for_garbage_time_zone():
"""Test getting a non existing time zone."""
time_zone = dt_util.get_time_zone("Non existing time zone")
assert time_zone is None
def test_set_default_time_zone():
"""Test setting default time zone."""
time_zone = dt_util.get_time_zone(TEST_TIME_ZONE)
dt_util.set_default_time_zone(time_zone)
# We cannot compare the timezones directly because of DST
assert time_zone.zone == dt_util.now().tzinfo.zone
def test_utcnow():
"""Test the UTC now method."""
assert abs(dt_util.utcnow().replace(tzinfo=None)-datetime.utcnow()) < \
timedelta(seconds=1)
def test_now():
"""Test the now method."""
dt_util.set_default_time_zone(dt_util.get_time_zone(TEST_TIME_ZONE))
assert abs(
dt_util.as_utc(dt_util.now()).replace(
tzinfo=None
) - datetime.utcnow()
) < timedelta(seconds=1)
def test_as_utc_with_naive_object():
"""Test the now method."""
utcnow = datetime.utcnow()
assert utcnow == dt_util.as_utc(utcnow).replace(tzinfo=None)
def test_as_utc_with_utc_object():
"""Test UTC time with UTC object."""
utcnow = dt_util.utcnow()
assert utcnow == dt_util.as_utc(utcnow)
def test_as_utc_with_local_object():
"""Test the UTC time with local object."""
dt_util.set_default_time_zone(dt_util.get_time_zone(TEST_TIME_ZONE))
localnow = dt_util.now()
utcnow = dt_util.as_utc(localnow)
assert localnow == utcnow
assert localnow.tzinfo != utcnow.tzinfo
def test_as_local_with_naive_object():
"""Test local time with native object."""
now = dt_util.now()
assert abs(now-dt_util.as_local(datetime.utcnow())) < \
timedelta(seconds=1)
def test_as_local_with_local_object():
"""Test local with local object."""
now = dt_util.now()
assert now == now
def test_as_local_with_utc_object():
"""Test local time with UTC object."""
dt_util.set_default_time_zone(dt_util.get_time_zone(TEST_TIME_ZONE))
utcnow = dt_util.utcnow()
localnow = dt_util.as_local(utcnow)
assert localnow == utcnow
assert localnow.tzinfo != utcnow.tzinfo
def test_utc_from_timestamp():
"""Test utc_from_timestamp method."""
assert datetime(1986, 7, 9, tzinfo=dt_util.UTC) == \
dt_util.utc_from_timestamp(521251200)
def test_as_timestamp():
"""Test as_timestamp method."""
ts = 1462401234
utc_dt = dt_util.utc_from_timestamp(ts)
assert ts == dt_util.as_timestamp(utc_dt)
utc_iso = utc_dt.isoformat()
assert ts == dt_util.as_timestamp(utc_iso)
# confirm the ability to handle a string passed in
delta = dt_util.as_timestamp("2016-01-01 12:12:12")
delta -= dt_util.as_timestamp("2016-01-01 12:12:11")
assert delta == 1
def test_parse_datetime_converts_correctly():
"""Test parse_datetime converts strings."""
assert \
datetime(1986, 7, 9, 12, 0, 0, tzinfo=dt_util.UTC) == \
dt_util.parse_datetime("1986-07-09T12:00:00Z")
utcnow = dt_util.utcnow()
assert utcnow == dt_util.parse_datetime(utcnow.isoformat())
def test_parse_datetime_returns_none_for_incorrect_format():
"""Test parse_datetime returns None if incorrect format."""
assert dt_util.parse_datetime("not a datetime string") is None
def test_get_age():
"""Test get_age."""
diff = dt_util.now() - timedelta(seconds=0)
assert dt_util.get_age(diff) == "0 seconds"
diff = dt_util.now() - timedelta(seconds=1)
assert dt_util.get_age(diff) == "1 second"
diff = dt_util.now() - timedelta(seconds=30)
assert dt_util.get_age(diff) == "30 seconds"
diff = dt_util.now() - timedelta(minutes=5)
assert dt_util.get_age(diff) == "5 minutes"
diff = dt_util.now() - timedelta(minutes=1)
assert dt_util.get_age(diff) == "1 minute"
diff = dt_util.now() - timedelta(minutes=300)
assert dt_util.get_age(diff) == "5 hours"
diff = dt_util.now() - timedelta(minutes=320)
assert dt_util.get_age(diff) == "5 hours"
diff = dt_util.now() - timedelta(minutes=2*60*24)
assert dt_util.get_age(diff) == "2 days"
diff = dt_util.now() - timedelta(minutes=32*60*24)
assert dt_util.get_age(diff) == "1 month"
diff = dt_util.now() - timedelta(minutes=365*60*24)
assert dt_util.get_age(diff) == "1 year"
def test_parse_time_expression():
"""Test parse_time_expression."""
assert [x for x in range(60)] == \
dt_util.parse_time_expression('*', 0, 59)
assert [x for x in range(60)] == \
dt_util.parse_time_expression(None, 0, 59)
assert [x for x in range(0, 60, 5)] == \
dt_util.parse_time_expression('/5', 0, 59)
assert [1, 2, 3] == \
dt_util.parse_time_expression([2, 1, 3], 0, 59)
assert [x for x in range(24)] == \
dt_util.parse_time_expression('*', 0, 23)
assert [42] == \
dt_util.parse_time_expression(42, 0, 59)
with pytest.raises(ValueError):
dt_util.parse_time_expression(61, 0, 60)
def test_find_next_time_expression_time_basic():
"""Test basic stuff for find_next_time_expression_time."""
def find(dt, hour, minute, second):
"""Call test_find_next_time_expression_time."""
seconds = dt_util.parse_time_expression(second, 0, 59)
minutes = dt_util.parse_time_expression(minute, 0, 59)
hours = dt_util.parse_time_expression(hour, 0, 23)
return dt_util.find_next_time_expression_time(
dt, seconds, minutes, hours)
assert datetime(2018, 10, 7, 10, 30, 0) == \
find(datetime(2018, 10, 7, 10, 20, 0), '*', '/30', 0)
assert datetime(2018, 10, 7, 10, 30, 0) == \
find(datetime(2018, 10, 7, 10, 30, 0), '*', '/30', 0)
assert datetime(2018, 10, 7, 12, 30, 30) == \
find(datetime(2018, 10, 7, 10, 30, 0), '/3', '/30', [30, 45])
assert datetime(2018, 10, 8, 5, 0, 0) == \
find(datetime(2018, 10, 7, 10, 30, 0), 5, 0, 0)
def test_find_next_time_expression_time_dst():
"""Test daylight saving time for find_next_time_expression_time."""
tz = dt_util.get_time_zone('Europe/Vienna')
dt_util.set_default_time_zone(tz)
def find(dt, hour, minute, second):
"""Call test_find_next_time_expression_time."""
seconds = dt_util.parse_time_expression(second, 0, 59)
minutes = dt_util.parse_time_expression(minute, 0, 59)
hours = dt_util.parse_time_expression(hour, 0, 23)
return dt_util.find_next_time_expression_time(
dt, seconds, minutes, hours)
# Entering DST, clocks are rolled forward
assert tz.localize(datetime(2018, 3, 26, 2, 30, 0)) == \
find(tz.localize(datetime(2018, 3, 25, 1, 50, 0)), 2, 30, 0)
assert tz.localize(datetime(2018, 3, 26, 2, 30, 0)) == \
find(tz.localize(datetime(2018, 3, 25, 3, 50, 0)), 2, 30, 0)
assert tz.localize(datetime(2018, 3, 26, 2, 30, 0)) == \
find(tz.localize(datetime(2018, 3, 26, 1, 50, 0)), 2, 30, 0)
# Leaving DST, clocks are rolled back
assert tz.localize(datetime(2018, 10, 28, 2, 30, 0), is_dst=False) == \
find(tz.localize(datetime(2018, 10, 28, 2, 5, 0), is_dst=False),
2, 30, 0)
assert tz.localize(datetime(2018, 10, 28, 2, 30, 0), is_dst=False) == \
find(tz.localize(datetime(2018, 10, 28, 2, 55, 0), is_dst=True),
2, 30, 0)
assert tz.localize(datetime(2018, 10, 28, 4, 30, 0), is_dst=False) == \
find(tz.localize(datetime(2018, 10, 28, 2, 55, 0), is_dst=True),
4, 30, 0)
assert tz.localize(datetime(2018, 10, 28, 2, 30, 0), is_dst=True) == \
find(tz.localize(datetime(2018, 10, 28, 2, 5, 0), is_dst=True),
2, 30, 0)
assert tz.localize(datetime(2018, 10, 29, 2, 30, 0)) == \
find(tz.localize(datetime(2018, 10, 28, 2, 55, 0), is_dst=False),
2, 30, 0)