def test_flat_prepend(self):
l = FlatList([1])
l.flat_prepend([2])
assert l == [2, 1]
assert l.flat_prepend(3) == [3, 2, 1]
def test_flatten(self):
l = FlatList([1, [2, [3]]])
assert l.flatten() == [1, 2, 3]
assert l == [1, 2, 3]
def test_flat_append(self):
l = FlatList([1])
l.flat_append([2])
assert l == [1, 2]
assert l.flat_append(3) == [1, 2, 3]
def test_prepend(self):
l = FlatList([1])
l.prepend(2)
assert l == [2, 1]
