Tests that OOPIF CacheStorage can also be can be accessed.
{
    caches : [
        [0] : {
            cacheId : https://devtools.oopif.test:8443/^0https://127.0.0.1|sw-cache-1
            cacheName : sw-cache-1
            securityOrigin : https://devtools.oopif.test:8443
            storageKey : https://devtools.oopif.test:8443/^0https://127.0.0.1
        }
    ]
}