Rewrite the cache warmer test to avoid relying on the cache internals
Rewrite the cache warmer test to avoid relying on the cache internals

The structure of the array returned in the PhpArrayAdapter cache file
changed in symfony/cache 4.2 to optimize the adapter. Instead of making
assertions on the content of this file, the test now ensures that reading
from the cache is a hit.

Incenteev/hashed-asset-bundle