/html/webappapis/scripting/events/messageevent-constructor.https.html| status | subtest | message |
|---|---|---|
| PASS | MessageEvent constructor called as normal function | |
| FAIL | Default event values | assert_true: initMessageEvent operation expected true got false |
| PASS | MessageEventInit dictionary | |
| FAIL | Passing null for ports member | assert_throws_js: function "function() { new MessageEvent("test", { ports: null }) }" did not throw |
| FAIL | ports attribute should be a FrozenArray | assert_true: Object.isFrozen() should return true expected true got false |
| FAIL | initMessageEvent operation | ev.initMessageEvent is not a function |
| PASS | Passing null for ports parameter to initMessageEvent | |
| FAIL | initMessageEvent operation default parameter values | Cannot read properties of undefined (reading 'length') |
| FAIL | Passing ServiceWorker for source member | Cannot read properties of undefined (reading 'getRegistration') |
bundle built 2026-07-16T07:16:48.063Z