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## Summary This moves almost all of our existing `UnionBuilder` tests to a Markdown-based test suite. I see how this could be a more controversial change, since these tests where written specifically for `UnionBuilder`, and by creating the union types using Python type expressions, we add an additional layer on top (parsing and inference of these expressions) that moves these tests away from clean unit tests more in the direction of integration tests. Also, there are probably a few implementation details of `UnionBuilder` hidden in the test assertions (e.g. order of union elements after simplifications). That said, I think we would like to see all those properties that are being tested here from *any* implementation of union types. And the Markdown tests come with the usual advantages: - More consice - Better readability - No re-compiliation when working on tests - Easier to add additional explanations and structure to the test suite This changeset adds a few additional tests, but keeps the logic of the existing tests except for a few minor modifications for consistency. --------- Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com> Co-authored-by: T-256 <132141463+T-256@users.noreply.github.com> |
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