Write all test case for tree: test_tree.py in tests

[danghai]

Not sure how to write unittest to test these function and class in Tree.
My idea is to convert tree to list by pre-order, in-order, post-order traversal and then using assert?

[danghai]

Hi @Njsao . We do not have any unittest for the Tree module yet. I think bst is a good start.

[mattandersoninf]

Would you mind if I added pytest.parameterize functions? Unittest if good if want to make full test classes but it you want to make them into their own test functions, pytest.parameterize can be useful

[CentralLT]

@danghai is the unit test still a pressing matter? if not we should close this issue and reopen it if needed.