Add parallel testing demo

Author: chingc

.github/workflows/parallel.yml

@@ -25,13 +25,17 @@ jobs:
           uv tree
 
       - name: Collect tests
-        run: uv run -- pytest --collect-only --quiet | tee collected.txt
+        run: |
+          uv run -- pytest --collect-only --quiet | tee collected.txt
+          # Delete the last two lines
+          sed -i '' -e '$d' collected.txt
+          sed -i '' -e '$d' collected.txt
 
       - shell: uv run -- python {0}
         run: |
           with open("collected.txt") as lines:
             for line in lines:
-              print(line.strip())
+              print(line.strip().partition("::"))
 
   test:
     name: Test