When a Bitcoin Core wallet is encrypted, you (apparently) have to enter the decryption passphrase only when trying to spend coins. You still get to "use" the wallet as in seeing all the transactions and labels.
I'm worried that my saved passphrase (partially on the computer/paper and in my head) is not correct. But to test this, I would have to spend coins... or do I?
I suspect that you'll say: "Use the change passphrase feature!"
But that would just put me again in the same situation. Of course, I had to repeat the passphrase (two times in total) to enter it in the first place, and this would be done again. So I'd again be paranoid that my keyboard has a faulty key or something like that.
Is there some way to "test unlock" a wallet without actually spending any money?