Cloned undirected graph

leetcode/test_stuff.py

@@ -475,3 +475,19 @@ def test_trie_busy():
 )
 def test_max_sub_array(nums: list[int], expected: int):
     assert stuff.sum_max_sub_array(nums) == expected
+
+
+@pytest.mark.parametrize(
+    ("inlist",),
+    [
+        ([[2, 3, 4], [1, 7], [1], [1, 5, 6, 8], [4], [4], [2], [4]],),
+        ([[2, 4], [1, 3], [2, 4], [1, 3]],),
+    ],
+)
+def test_copy_neighborly_node(inlist):
+    orig = stuff.neighborly_node_from_list(inlist)
+    copied = stuff.neighborly_node_from_list(stuff.neighborly_node_to_list(orig))
+
+    assert id(orig) != id(copied)
+    assert orig == copied
+    assert stuff.neighborly_node_to_list(orig) == stuff.neighborly_node_to_list(copied)