The original paper gives offers a set of problems to be mirrored, so use them as test cases. It's peer review and published, so this will be better than anything you can come up with at night.
Setup
[x] Import compatible version of ScalaTest
Trivial Examples
[x] Matching a single person to another.
[x] Gale-Shapley with empty matches as a result.
Paper
Those requires implemented solver instead of a one-shot game as before.
[x] Example 2
[x] Example 2 (Symmetry: switch active and passive and result should remains identical)
The original paper gives offers a set of problems to be mirrored, so use them as test cases. It's peer review and published, so this will be better than anything you can come up with at night.
Setup
Trivial Examples
Paper
Those requires implemented solver instead of a one-shot game as before.