Failing test in Ruby 3.1

[destsimon]

The test does not allow a url with only a scheme is failing in Ruby 3.1.4

A scheme only url is passing as valid: http://

Looks like the reason is changed behavior in the URI class:

In Ruby 3.0.6:

[1] pry(main)> uri = URI.parse('http://')
=> #<URI::HTTP http:>
[2] pry(main)> uri.host
=> nil

→ uri.host returns nil

In Ruby 3.1.4:

[1] pry(main)> uri = URI.parse('http://')
=> #<URI::HTTP http://>
[2] pry(main)> uri.host
=> ""

→ uri.host returns an empty string

URI is used here