def test_get_path_difference__new_is_subset(self):
"""
Test the new path being a proper subset.
"""
objects = [[i] for i in range(4)]
old_seq = objects
new_seq = objects[:2]
# Then no elements are new.
expected = []
actual = datamodel.get_path_difference(new_seq, old_seq)
self.assertEqual(actual, expected)
def test_get_path_difference__new_is_superset(self):
"""
Test the new path being a proper superset.
"""
objs = [[i] for i in range(4)]
old_seq = objs[:2]
new_seq = objs
expected = [
(3, objs[2]),
(4, objs[3]),
]
actual = datamodel.get_path_difference(new_seq, old_seq)
self.assertEqual(actual, expected)
def test_get_path_difference(self):
"""
Test the typical case.
"""
obj1, obj2, obj3, obj4, obj5 = ([i] for i in range(5))
old_seq = [obj1, obj2, obj3]
new_seq = [obj1, obj2, obj4, obj5]
expected = [
(3, obj4),
(4, obj5),
]
actual = datamodel.get_path_difference(new_seq, old_seq)
self.assertEqual(actual, expected)