def test_should_not_contain_non_element(self):
rrs = RoundRobinSet([1, 2, 3])
assert 4 not in rrs
def test_should_be_able_to_get_next_if_empty(self):
rrs = RoundRobinSet([])
assert next(rrs) is None
def test_should_be_able_to_replace(self):
rrs = RoundRobinSet([1, 2, 3])
rrs.replace([3, 4, 5])
assert list(rrs) == [3, 4, 5]
def test_should_repr_as_set(self):
rrs = RoundRobinSet([1, 2, 3])
assert repr(rrs) == "{1, 2, 3}"
def test_should_not_be_able_to_remove_non_existing(self):
rrs = RoundRobinSet([1, 2, 3])
with self.assertRaises(ValueError):
rrs.remove(4)
def test_should_be_able_to_update(self):
rrs = RoundRobinSet([1, 2, 3])
rrs.update([3, 4, 5])
assert list(rrs) == [1, 2, 3, 4, 5]
def test_should_be_able_to_discard_non_existing(self):
rrs = RoundRobinSet([1, 2, 3])
rrs.discard(4)
assert list(rrs) == [1, 2, 3]
def test_should_be_able_to_remove_existing(self):
rrs = RoundRobinSet([1, 2, 3])
rrs.remove(2)
assert list(rrs) == [1, 3]
def test_should_be_able_to_add_existing(self):
rrs = RoundRobinSet([1, 2, 3])
rrs.add(2)
assert list(rrs) == [1, 2, 3]
def test_should_be_able_to_clear(self):
rrs = RoundRobinSet([1, 2, 3])
rrs.clear()
assert list(rrs) == []
def test_should_be_able_to_add_new(self):
rrs = RoundRobinSet([1, 2, 3])
rrs.add(4)
assert list(rrs) == [1, 2, 3, 4]
def test_should_have_length(self):
rrs = RoundRobinSet([1, 2, 3])
assert len(rrs) == 3
def test_should_be_iterable(self):
rrs = RoundRobinSet([1, 2, 3])
assert list(iter(rrs)) == [1, 2, 3]
def test_should_be_able_to_get_next_repeatedly_via_old_method(self):
rrs = RoundRobinSet([1, 2, 3])
assert rrs.next() == 1
assert rrs.next() == 2
assert rrs.next() == 3
assert rrs.next() == 1
def test_should_be_able_to_get_next_repeatedly(self):
rrs = RoundRobinSet([1, 2, 3])
assert next(rrs) == 1
assert next(rrs) == 2
assert next(rrs) == 3
assert next(rrs) == 1