<!DOCTYPE HTML>
<link rel="help" href="http://url.spec.whatwg.org/#dom-url-protocol">
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
test(function() {
var url = new URL('http://www.domain.com');
assert_equals(url.protocol, 'http:');
url.protocol = 'https';
assert_equals(url.protocol, 'https:');
url.protocol = 'https:';
assert_equals(url.protocol, 'https:');
url.protocol = 'invalid/protocol';
assert_equals(url.protocol, 'https:');
}, 'protocol property');
test(function() {
var url = new URL('http://www.domain.com');
url.href = 'invalid';
assert_equals(url.protocol, ':');
url.protocol = 'http';
assert_equals(url.protocol, ':');
assert_equals(url.href, 'invalid');
}, 'protocol property invalid URL');
</script>