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I can help you write an article on Solana: Signature Verification Failed with Missing Signatures for Public Keys in a Jest Test Using Anchor.

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 developmenters to build decentralized applications (DApps) quickly. However, like any other blockchain, 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 using anchor and provide steps to fix the issue.

What is Signature Verification Failed:

Signature verification failure occurs when a test attempts to sign a transaction but fails to obtain the required signature for the public key (s) being verified. This can happen due to various reasons such as:

• Missing signatures (also known as « missing signers »)

• Incorrect Private Keys

• Private Key Rotation Issues

Jest Example Test:

Let’s take a look at an example of how we might test this scenario using jest and anchor:

`JSX

Import {Anchorcontract} from ‘@coral-xyz/anchor’;

Import {Program} from ‘@coral-xyz/anchor’;

Import {royaltynft} from ‘../target/types/royalty_nft’;

Const contract = New Anchorcontract (Royaltynft);

Describe (‘Signature Verification Failed’, () => {

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

// Create A Test Account With A 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 // Missing Signature for Public Key 2

);

Throw New Error (‘expected error’);

} catch (error) {

Expect (Error.Message) .tobe (‘Missing Signatures for Public Key (S)’);

}

});

});

`

In this example, we create two test accounts with different public keys. We then attempten to sign a transaction using the first public key but fails to miss signatures. The Expect 'Statement checks that an error message is thrown indicating that there are missing signatures for the second public key.

Fixing Signature Verification Failed in Jest Tests:

To fix this issue, you can follow these steps:

• verify the private keys : ensure that your test accounts have correct private keys.

• Update theSignpublickeyFunction

  

  : Modify the SignpublickeyFunction to accept a map of public keys to signatures and an additional parameter for missing signatures.

• ADD ERROR HANDLING : Wrap theSignpublickeyCall in a try-catch block to catch any errors that may be thrown due to missing signatures.

HERE'S 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);

Describe (‘Signature Verification Failed’, () => {

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

// Create A Test Account With A Public Key

Const publickey1 = ‘0x1234567890ABCDEF1234DEF567890ABFEDCBA’;

Const Privatekey1 = ‘0x …’; // Replace with the actual private key

try {

Await contract.

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