On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-PASS navigator.sendBeacon("http://localhost:8000/blink/sendbeacon/resources/save-beacon.php?name=cross-origin", "CrossOrigin"); is true
+PASS navigator.sendBeacon("http://localhost:8000/blink/sendbeacon/resources/save-beacon.py?name=cross-origin", "CrossOrigin"); is true
PASS Beacon sent successfully
PASS Content-Type: text/plain;charset=UTF-8
PASS Origin: http://127.0.0.1:8000
-PASS Referer: http://127.0.0.1:8000/blink/sendbeacon/beacon-cross-origin.html
+PASS Referer: http://127.0.0.1:8000/
PASS Request-Method: POST
PASS Length: 11
PASS Body: CrossOrigin
-PASS
+PASS
PASS successfullyParsed is true
TEST COMPLETE