<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <title>Test MediaStream as EventTarget</title> <script src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" href="/tests/SimpleTest/test.css"/> <script> var ms = new MediaStream(); var listenerForFooWasCalled = false; ms.addEventListener("foo", () => { listenerForFooWasCalled = true; }); var listenerForAddTrackWasCalled = false; ms.addEventListener("addtrack", () => { listenerForAddTrackWasCalled = true; }); var handlerForAddTrackWasCalled = false; ms.onaddtrack = () => { handlerForAddTrackWasCalled = true; }; ms.dispatchEvent(new Event("foo")); ms.dispatchEvent(new Event("addtrack")); ok(listenerForFooWasCalled, "Should have called the event listener for 'foo'"); ok(listenerForAddTrackWasCalled, "Should have called the event listener for 'addtrack'"); ok(handlerForAddTrackWasCalled, "Should have called the event handler for 'addtrack'") </script> </head> <body> <p id="display"></p> <div id="content" style="display: none"></div> <pre id="test"></pre> </body> </html>