Does the banks client verify signatures?

[the-fool]

It seems like processTransaction works when an account is supposed to be a signer, but there is no signature in the transaction. Is this the expected behavior? And is there any way to enforce signature checks?

For example, say there is an Anchor accounts declaration:

#[derive(Accounts)]
pub struct Example<'info> {
    #[account(mut)]
    payer: Signer<'info>,

    other_signer: Signer<'info>,
}

If I submit a transaction with these two accounts, but no signature for the other_signer account, the transaction still executes successfully.

[kevinheavey]

The underlying solana-banks-server code doesn't check the signatures. But how are you serializing the transaction without the signatures being checked on the client side? Related: https://github.com/kevinheavey/solana-bankrun/pull/15

[the-fool]

That answers that :)

I am just using @solana/web3.js, like so:

const msg = new web3.TransactionMessage({
      payerKey,
      recentBlockhash,
      instructions,
 }).compileToV0Message()

const tx = new web3.VersionedTransaction(msg)

banksClient.processTransaction(tx)