ci: run tests with xvfb-run

Author: Bogdanp

.github/workflows/ci.yml

@@ -16,4 +16,4 @@ jobs:
           variant: ${{ matrix.racket-variant }}
           version: ${{ matrix.racket-version }}
       - run: raco pkg install --batch --auto http-easy-lib/ http-easy-test/ http-easy/
-      - run: raco test http-easy-test/
+      - run: xvfb-run -a raco test -j "$(nproc)" http-easy-test/

http-easy-test/net/http-easy/benchmarks.rkt

@@ -175,8 +175,7 @@
 
 (module+ test
   (require rackunit/text-ui)
-  (unless (getenv "CI")
-    (run-tests benchmarks)))
+  (run-tests benchmarks))
 
 (module+ main
   (require pict)