diff --git a/draft/2025-12-10-this-week-in-rust.md b/draft/2025-12-10-this-week-in-rust.md
index 7766bf937..106d05428 100644
--- a/draft/2025-12-10-this-week-in-rust.md
+++ b/draft/2025-12-10-this-week-in-rust.md
@@ -51,6 +51,7 @@ and just ask the editors to select the category.
 * [Postfix Macros and `let place`](https://nadrieril.github.io/blog/2025/12/09/postfix-macros-and-let-place.html)
 
 ### Rust Walkthroughs
+* [Rust Unit Testing: buffered file reading](https://jorgeortiz.dev/posts/rust_unit_testing_file_buf_reading/)
 * [series] [Part 1: Tokenization, Building an LLM From Scratch in Rust](https://www.tag1.com/white-paper/part1-tokenization-building-an-llm-from-scratch-in-rust/)
 
 ### Research