assert(Youtube.owns_url?('http://www.youtube.com/v/K9iDMcmm0tE'))
assert(Youtube.owns_url?('http://www.youtube.com/watch?v=83-hlYMH1XE'))
assert(Youtube.owns_url?('http://www.youtube.com/watch?v=83-hlYMH1XE&feature=dir'))
assert(Youtube.owns_url?('http://www.youtube.com/v/K9iDMcmm0tE'))
assert(Youtube.owns_url?('http://www.youtube.com/watch?v=83-hlYMH1XE'))
assert(Youtube.owns_url?('http://www.youtube.com/watch?v=83-hlYMH1XE&feature=dir'))