How to test CORS headers with cURL

test_cors.sh

curl -H "Origin: http://localhost:8080" \
    -H "Access-Control-Request-Method: POST" \
    -H "Access-Control-Request-Headers: X-Requested-With" \
    -X OPTIONS --verbose \
    http://localhost:8080/my/api
    
# ...
# < Access-Control-Allow-Origin: *
# < Access-Control-Allow-Methods: POST
# < Access-Control-Allow-Headers: X-Requested-With
# ...