Solana: Signature verification failed. Missing signature for public key(s) [key1, key2] in jest test using anchor

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I can help you write an article about Solana: Signature verification failed due to missing public key signatures in Anchor test.

Title: Solana Signature Verification Failed: A Guide to Fixing the Issue in Jest Tests Using Anchor

Introduction:

Solana is a fast and scalable blockchain platform that allows developers to quickly build decentralized applications (dApps). However, like any other blockchain, it relies on signatures to verify transactions and maintain the integrity of the network. In this article, we will explore why signature verification failed in our Jest tests with Anchor and provide guidance on how to fix the issue.

What is Signature Verification Failed:

A signature verification error occurs when a test attempts to sign a transaction but cannot obtain the required signature for the public keys being verified. This can happen for a number of reasons, including:

• Missing signatures (also known as “missing signers”)

• Incorrect private keys

• Private key rotation issues

Jest Test Example:

Let’s look at an example of how we can test this scenario using Jest and Anchor:

import { AnchorContract } from '@coral-xyz/anchor';
import { Program } from @coral-xyz/anchor;
import { RoyaltyNft } from '../target/types/royalty_nft';
const contract = new AnchorContract(RoyaltyNft);
description('Signature verification failed', () => {
it('should throw an error when there are missing signatures', async () => {
// Create a test account with the public key
const publicKey1 = '0x1234567890abcdef1234def567890abfedcba';
const privateKey1 = '0x...'; // Replace with the actual private key
// Create another test account with an additional public key
const publicKey2 = '0x...'; // Replace with the actual private key
try {
await contract.signPublicKey(
publicKey1,
privateKey1, // Correct signature for public key 1
publicKey2,
privateKey2 // Signature for public key 2 missing
);
throw new Error('Expected error');
} catch (error) {
expect(error.message).toBe('Missing public key signatures');
}
});
});

In this example, we create two test accounts with different public keys. We then try to sign a transaction using the first public key, but it fails due to missing signatures. The expect statement makes sure that an error message is sent indicating that the second public key is missing signatures.

Fixing signature verification failed in Jest tests:

To fix this issue:

• Check private keys: Make sure your test accounts have the correct private keys.

• Update signPublicKey function: Modify the signPublicKey function to accept a map of public keys to signatures and an additional parameter for missing signatures.

• Add error handling

  : Wrap the signPublicKey' call in a try-catch block to catch any errors that might occur due to missing signatures.

Here is an updated example:

“ javascript

import { AnchorContract } from ‘@coral-xyz/anchor’;

import { Program } from @coral-xyz/anchor;

import { RoyaltyNft } from ‘../target/types/royalty_nft’;

const contract = new AnchorContract(RoyaltyNft);

description(‘Signature verification failed’, () => {

it(‘should throw an error when there are missing signatures’, async () => {

// Create a test account with the public key

const publicKey1 = ‘0x1234567890abcdef1234def567890abfedcba’;

const privateKey1 = ‘0x…’; // Replace with the actual private key

try {

wait for agreement.

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