New Rust testing article suggested (rust-lang#7119)

* New Rust testing article suggested

* Update 2025-10-08-this-week-in-rust.md

---------

Co-authored-by: Ben Dillon <[email protected]>

Author: jdortiz

draft/2025-10-08-this-week-in-rust.md

@@ -68,6 +68,8 @@ and just ask the editors to select the category.
 
 [How to automatically Profile Performance of Rust Applications](https://pawelurbanek.com/rust-optimize-performance)
 
+* [Rust unit testing: test doubles & stubs](https://jorgeortiz.dev/posts/rust_unit_testing_test_doubles_stub/)
+
 ### Research
 
 ### Miscellaneous