| <!DOCTYPE html> | |
| <script src="/resources/testharness.js"></script> | |
| <script src="/resources/testharnessreport.js"></script> | |
| <script> | |
| test(function() { | |
| assert_throws(new TypeError, () => { navigator.sendBeacon("/", new ReadableStream()) }); | |
| }, "Beacon with a ReadableStream body should fail."); | |
| </script> |