def test__get_latest_revision(self):
timestamp = datetime(2020, 1, 1, 1, 1, 1)
timestamp_latest = datetime(2020, 2, 1, 1, 1, 1)
revision = Revision(id=1,
content='hello',
timestamp=timestamp,
document_id=5)
revision_latest = Revision(id=2,
content='hello again',
timestamp=timestamp_latest,
document_id=5)
document = Document(id=5,
title='blah',
revisions=[revision, revision_latest])
assert document.get_latest_revision() == revision_latest
