test: fix ineffective error tests

Fix tests whether errors are thrown correctly
because they are successful when error doesn't get thrown.

PR-URL: https://github.com/nodejs/node/pull/27333
Fixes: https://github.com/nodejs/node/issues/26385


Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>