Add tests for invalid package names
Add tests for invalid package names

Also make sure redirect tests use valid package names

kemitchell/newww,supriyantomaftuh/newww,aredridel/newww,nexdrew/newww,kemitchell/newww,rutaihwa/newww,watilde/newww,watilde/newww,jonathanmarvens/npm-newww,amilaonbitlab/newww,supriyantomaftuh/newww,nexdrew/newww,nexdrew/newww,supriyantomaftuh/newww,rutaihwa/newww,kemitchell/newww,aredridel/newww,amilaonbitlab/newww,amilaonbitlab/newww,rutaihwa/newww,watilde/newww,jonathanmarvens/npm-newww,jonathanmarvens/npm-newww,aredridel/newww