b9a7328789
## Summary Mainly for partially fixing #16953 ## Test Plan Update is_subtype tests. And should maybe do these checks for many other types (is subtype of object but object is not subtype) --------- Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
Markdown files within the mdtest/ subdirectory are tests of type inference and type checking;
executed by the tests/mdtest.rs integration test.
See crates/red_knot_test/README.md for documentation of this test format.