I never realized mocks was only for the component in question - I thought it would be available to all the children, too 🤔

It sounds like this should be the default behavior.

Originally posted by @lmiller1990 in #1701 (comment)

The mocks object is only set for the first component; not it's children. This behaviour means that properties such as $route / $router are not easily mockable via integration style testing.

There is ways around this, by using localVue and creating a router instance and setting on the mount options.