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# Copyright 2017, Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import calendar
import datetime
import pytest
import pytz
from proto import datetime_helpers
from google.protobuf import timestamp_pb2
ONE_MINUTE_IN_MICROSECONDS = 60 * 1e6
def test_from_microseconds():
five_mins_from_epoch_in_microseconds = 5 * ONE_MINUTE_IN_MICROSECONDS
five_mins_from_epoch_datetime = datetime.datetime(
1970, 1, 1, 0, 5, 0, tzinfo=datetime.timezone.utc
)
result = datetime_helpers._from_microseconds(five_mins_from_epoch_in_microseconds)
assert result == five_mins_from_epoch_datetime
def test_to_rfc3339():
value = datetime.datetime(2016, 4, 5, 13, 30, 0)
expected = "2016-04-05T13:30:00.000000Z"
assert datetime_helpers._to_rfc3339(value) == expected
def test_to_rfc3339_with_utc():
value = datetime.datetime(2016, 4, 5, 13, 30, 0, tzinfo=datetime.timezone.utc)
expected = "2016-04-05T13:30:00.000000Z"
assert datetime_helpers._to_rfc3339(value, ignore_zone=False) == expected
def test_to_rfc3339_with_non_utc():
zone = pytz.FixedOffset(-60)
value = datetime.datetime(2016, 4, 5, 13, 30, 0, tzinfo=zone)
expected = "2016-04-05T14:30:00.000000Z"
assert datetime_helpers._to_rfc3339(value, ignore_zone=False) == expected
def test_to_rfc3339_with_non_utc_ignore_zone():
zone = pytz.FixedOffset(-60)
value = datetime.datetime(2016, 4, 5, 13, 30, 0, tzinfo=zone)
expected = "2016-04-05T13:30:00.000000Z"
assert datetime_helpers._to_rfc3339(value, ignore_zone=True) == expected
def test_ctor_wo_nanos():
stamp = datetime_helpers.DatetimeWithNanoseconds(2016, 12, 20, 21, 13, 47, 123456)
assert stamp.year == 2016
assert stamp.month == 12
assert stamp.day == 20
assert stamp.hour == 21
assert stamp.minute == 13
assert stamp.second == 47
assert stamp.microsecond == 123456
assert stamp.nanosecond == 123456000
def test_ctor_w_nanos():
stamp = datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, nanosecond=123456789
)
assert stamp.year == 2016
assert stamp.month == 12
assert stamp.day == 20
assert stamp.hour == 21
assert stamp.minute == 13
assert stamp.second == 47
assert stamp.microsecond == 123456
assert stamp.nanosecond == 123456789
def test_ctor_w_micros_positional_and_nanos():
with pytest.raises(TypeError):
datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, 123456, nanosecond=123456789
)
def test_ctor_w_micros_keyword_and_nanos():
with pytest.raises(TypeError):
datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, microsecond=123456, nanosecond=123456789
)
def test_rfc3339_wo_nanos():
stamp = datetime_helpers.DatetimeWithNanoseconds(2016, 12, 20, 21, 13, 47, 123456)
assert stamp.rfc3339() == "2016-12-20T21:13:47.123456Z"
def test_rfc3339_wo_nanos_w_leading_zero():
stamp = datetime_helpers.DatetimeWithNanoseconds(2016, 12, 20, 21, 13, 47, 1234)
assert stamp.rfc3339() == "2016-12-20T21:13:47.001234Z"
def test_rfc3339_w_nanos():
stamp = datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, nanosecond=123456789
)
assert stamp.rfc3339() == "2016-12-20T21:13:47.123456789Z"
def test_rfc3339_w_nanos_w_leading_zero():
stamp = datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, nanosecond=1234567
)
assert stamp.rfc3339() == "2016-12-20T21:13:47.001234567Z"
def test_rfc3339_w_nanos_no_trailing_zeroes():
stamp = datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, nanosecond=100000000
)
assert stamp.rfc3339() == "2016-12-20T21:13:47.1Z"
def test_rfc3339_w_nanos_w_leading_zero_and_no_trailing_zeros():
stamp = datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, nanosecond=1234500
)
assert stamp.rfc3339() == "2016-12-20T21:13:47.0012345Z"
def test_from_rfc3339_w_invalid():
stamp = "2016-12-20T21:13:47"
with pytest.raises(ValueError):
datetime_helpers.DatetimeWithNanoseconds.from_rfc3339(stamp)
def test_from_rfc3339_wo_fraction():
timestamp = "2016-12-20T21:13:47Z"
expected = datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, tzinfo=datetime.timezone.utc
)
stamp = datetime_helpers.DatetimeWithNanoseconds.from_rfc3339(timestamp)
assert stamp == expected
def test_from_rfc3339_w_partial_precision():
timestamp = "2016-12-20T21:13:47.1Z"
expected = datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, microsecond=100000, tzinfo=datetime.timezone.utc
)
stamp = datetime_helpers.DatetimeWithNanoseconds.from_rfc3339(timestamp)
assert stamp == expected
def test_from_rfc3339_w_full_precision():
timestamp = "2016-12-20T21:13:47.123456789Z"
expected = datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, nanosecond=123456789, tzinfo=datetime.timezone.utc
)
stamp = datetime_helpers.DatetimeWithNanoseconds.from_rfc3339(timestamp)
assert stamp == expected
@pytest.mark.parametrize(
"fractional, nanos",
[
("12345678", 123456780),
("1234567", 123456700),
("123456", 123456000),
("12345", 123450000),
("1234", 123400000),
("123", 123000000),
("12", 120000000),
("1", 100000000),
],
)
def test_from_rfc3339_test_nanoseconds(fractional, nanos):
value = "2009-12-17T12:44:32.{}Z".format(fractional)
assert (
datetime_helpers.DatetimeWithNanoseconds.from_rfc3339(value).nanosecond == nanos
)
def test_timestamp_pb_wo_nanos_naive():
stamp = datetime_helpers.DatetimeWithNanoseconds(2016, 12, 20, 21, 13, 47, 123456)
delta = stamp.replace(tzinfo=datetime.timezone.utc) - datetime_helpers._UTC_EPOCH
seconds = int(delta.total_seconds())
nanos = 123456000
timestamp = timestamp_pb2.Timestamp(seconds=seconds, nanos=nanos)
assert stamp.timestamp_pb() == timestamp
def test_timestamp_pb_w_nanos():
stamp = datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, nanosecond=123456789, tzinfo=datetime.timezone.utc
)
delta = stamp - datetime_helpers._UTC_EPOCH
timestamp = timestamp_pb2.Timestamp(
seconds=int(delta.total_seconds()), nanos=123456789
)
assert stamp.timestamp_pb() == timestamp
def test_from_timestamp_pb_wo_nanos():
when = datetime.datetime(
2016, 12, 20, 21, 13, 47, 123456, tzinfo=datetime.timezone.utc
)
delta = when - datetime_helpers._UTC_EPOCH
seconds = int(delta.total_seconds())
timestamp = timestamp_pb2.Timestamp(seconds=seconds)
stamp = datetime_helpers.DatetimeWithNanoseconds.from_timestamp_pb(timestamp)
assert _to_seconds(when) == _to_seconds(stamp)
assert stamp.microsecond == 0
assert stamp.nanosecond == 0
assert stamp.tzinfo == datetime.timezone.utc
def test_replace():
stamp = datetime_helpers.DatetimeWithNanoseconds(
2016, 12, 20, 21, 13, 47, 123456, tzinfo=datetime.timezone.utc
)
# ns and ms provided raises
with pytest.raises(TypeError):
stamp.replace(microsecond=1, nanosecond=0)
# No Nanoseconds or Microseconds
new_stamp = stamp.replace(year=2015)
assert new_stamp.year == 2015
assert new_stamp.microsecond == 123456
assert new_stamp.nanosecond == 123456000
# Nanos
new_stamp = stamp.replace(nanosecond=789123)
assert new_stamp.microsecond == 789
assert new_stamp.nanosecond == 789123
# Micros
new_stamp = stamp.replace(microsecond=456)
assert new_stamp.microsecond == 456
assert new_stamp.nanosecond == 456000
# assert _to_seconds(when) == _to_seconds(stamp)
# assert stamp.microsecond == 0
# assert stamp.nanosecond == 0
# assert stamp.tzinfo == datetime.timezone.utc
def test_from_timestamp_pb_w_nanos():
when = datetime.datetime(
2016, 12, 20, 21, 13, 47, 123456, tzinfo=datetime.timezone.utc
)
delta = when - datetime_helpers._UTC_EPOCH
seconds = int(delta.total_seconds())
timestamp = timestamp_pb2.Timestamp(seconds=seconds, nanos=123456789)
stamp = datetime_helpers.DatetimeWithNanoseconds.from_timestamp_pb(timestamp)
assert _to_seconds(when) == _to_seconds(stamp)
assert stamp.microsecond == 123456
assert stamp.nanosecond == 123456789
assert stamp.tzinfo == datetime.timezone.utc
def _to_seconds(value):
"""Convert a datetime to seconds since the unix epoch.
Args:
value (datetime.datetime): The datetime to convert.
Returns:
int: Microseconds since the unix epoch.
"""
assert value.tzinfo is datetime.timezone.utc
return calendar.timegm(value.timetuple())
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