composer install
php bin/console --env=test doctrine:database:create
php bin/console --env=test doctrine:schema:create
php bin/phpunit
Update composer.json with "symfony/http-kernel": "5.4.7",
/ "symfony/http-kernel": "5.4.8",
to switch between SF versions.
On SF 5.4.7 :
WARNINGS!
Tests: 2, Assertions: 3, Warnings: 1.
On SF 5.4.8 :
FAILURES!
Tests: 2, Assertions: 3, Failures: 1, Warnings: 1.