Test setting the hostname attribute of the URL in HTMLAnchorElement. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". Basic test PASS a.href is 'https://www.otherdomain.com:8080/path/' Extra slashes before hostname PASS a.href is 'https://www.otherdomain.com:8080/path/' Set hostname to URL with foo: protocol PASS a.href is 'foo://www.otherdomain.com/path/' Set hostname to null PASS a.href is 'https://www.mydomain.com:8080/path/' Set hostname to empty string PASS a.href is 'https://www.mydomain.com:8080/path/' Set hostname to URL with 2 colons PASS a.href is 'really:bad:url' Set a hostname that contains space in it PASS a.href is 'http://www.my domain.com/path/' Set hostname on a local file FAIL a.href should be c:/path/testurl.html. Was c://a/path/testurl.html. Set hostname to undefined PASS a.href is 'https://undefined:8080/path/' PASS successfullyParsed is true TEST COMPLETE