http://foo.com/blah_blah_(wikipedia)
http://foo.com/blah_blah_(wikipedia)_(again)
http://www.example.com/wpstyle/?p=364
https://www.example.com/foo/?bar=baz&inga=42&quux
http://userid:password@example.com:8080
http://userid:password@example.com:8080/
http://userid@example.com:8080
http://userid@example.com:8080/
http://userid:password@example.com
http://userid:password@example.com/
http://foo.com/blah_(wikipedia)#cite-1
http://foo.com/blah_(wikipedia)_blah#cite-1
http://foo.com/unicode_(✪)_in_parens
http://foo.com/(something)?after=parens
http://code.google.com/events/#&product=browser
http://foo.bar/?q=Test%20URL-encoded%20stuff
http://foo.bar/foo(bar)baz quux
http://foo.bar?q=Spaces should be encoded
http://
http://.
http://..
http://../
http://?
http://??
http://??/
http://#
http://##
http://##/
//
//a
///a
///
http:///a
foo.com
rdar://1234
h://test
http:// shouldfail.com
:// should fail
http://-error-.invalid/
http://-a.b.co
http://a.b-.co
http://3628126748
http://.www.foo.bar/
http://.www.foo.bar./