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<!doctype html>
<title>getUserMedia({}) rejects with TypeError</title>
<link rel="author" title="Dominique Hazael-Massieux" href=""/>
<h1 class="instructions">Description</h1>
<p class="instructions">This test checks that getUserMedia with no value in the
options parameter raises a TypeError exception.</p>
<div id='log'></div>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
promise_test(async () => {
try {
// Race a settled promise to check that the returned promise is already
// rejected.
await Promise.race([navigator.mediaDevices.getUserMedia({}),
} catch (error) {
assert_throws_js(TypeError, () => { throw error });
assert_false('constraintName' in error,
"constraintName attribute not set as expected");
assert_unreached("should have returned an already-rejected promise.");
}, "Tests that getUserMedia is rejected with a TypeError when used with an empty options parameter");