diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b862e61..08dbdb2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -28,6 +28,9 @@ jobs:
         run: |
           sudo apt-get update && sudo apt-get install -y \
             composer
+          php -r "assert(true);" || echo fail
+          php -r "assert(false);" || echo fail
+          XDEBUG_MODE=off php -r "assert(false);" || echo fail
 
       - name: "Install Composer dependencies"
         timeout-minutes: 1