'''
PyIntervalTree: A mutable, self-balancing interval tree.

Test module

Copyright 2013-2014 Chaim-Leib Halbert

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 intervaltree import Interval, IntervalTree
from pprint import pprint
from operator import attrgetter
import pickle
'''
PyIntervalTree: A mutable, self-balancing interval tree.

Test module

Copyright 2013-2014 Chaim-Leib Halbert

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 intervaltree import Interval
from pprint import pprint
from operator import attrgetter
import pickle

def test_isnull():
    iv = Interval(0,0)
    assert iv.is_null()

    iv = Interval(1,0)
    assert iv.is_null()


test Interval.is_null()