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# Copyright DataStax, Inc.
#
# 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.
from datetime import datetime, timedelta
from uuid import uuid4
from cassandra.cqlengine.functions import get_total_seconds
from tests.integration.cqlengine.base import BaseCassEngTestCase
from cassandra.cqlengine.management import sync_table
from cassandra.cqlengine.management import drop_table
from cassandra.cqlengine.models import Model
from cassandra.cqlengine import columns
from tests.integration.cqlengine import execute_count
class DateTimeQueryTestModel(Model):
user = columns.Integer(primary_key=True)
day = columns.DateTime(primary_key=True)
data = columns.Text()
class TestDateTimeQueries(BaseCassEngTestCase):
@classmethod
def setUpClass(cls):
super(TestDateTimeQueries, cls).setUpClass()
sync_table(DateTimeQueryTestModel)
cls.base_date = datetime.now() - timedelta(days=10)
for x in range(7):
for y in range(10):
DateTimeQueryTestModel.create(
user=x,
day=(cls.base_date+timedelta(days=y)),
data=str(uuid4())
)
@classmethod
def tearDownClass(cls):
super(TestDateTimeQueries, cls).tearDownClass()
drop_table(DateTimeQueryTestModel)
@execute_count(1)
def test_range_query(self):
""" Tests that loading from a range of dates works properly """
start = datetime(*self.base_date.timetuple()[:3])
end = start + timedelta(days=3)
results = DateTimeQueryTestModel.filter(user=0, day__gte=start, day__lt=end)
assert len(results) == 3
@execute_count(3)
def test_datetime_precision(self):
""" Tests that millisecond resolution is preserved when saving datetime objects """
now = datetime.now()
pk = 1000
obj = DateTimeQueryTestModel.create(user=pk, day=now, data='energy cheese')
load = DateTimeQueryTestModel.get(user=pk)
self.assertAlmostEqual(get_total_seconds(now - load.day), 0, 2)
obj.delete()
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