diff --git a/assignment/socket_chat--patterns-and-testing.md b/assignment/socket_chat--patterns-and-testing.md
index 6c38999b1f8ee431b29e31f99e58262874682ade..bda070124a0c4178b1df3b9208df9dc1152cd9d0 100644
--- a/assignment/socket_chat--patterns-and-testing.md
+++ b/assignment/socket_chat--patterns-and-testing.md
@@ -106,7 +106,7 @@ authoritative source of requirements.**
 
 Look over the starter code, view
 <!--[this short demonstration](https://use.vg/qB6zFZ),-->
-[this short demonstration](TODO) <!-- this one includes relay server -->
+[this short demonstration](https://use.vg/eiLVWB) <!-- this one includes relay server -->
 and run the program to get a
 feel for how the program works.
 
diff --git a/src/test/.gitkeep b/src/test/.gitkeep
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000