Custom generator for IRIs conforming to RFC3987?

[Tara Athan]

I am starting to use scalacheck for testing, and I find I need some custom generators. So far I have a written a String generator based on the XML Char pattern (as defined in http://www.w3.org/TR/REC-xml/#charsets). Next I need a generator for valid IRIs that conforms to RFC 3987. I am wondering if this has been done before so I don't need to reinvent the wheel.

Thanks, Tara