solana-program-examples/basics/create-account/anchor/tests/litesvm.test.ts

import assert from 'node:assert';
import { Program } from '@coral-xyz/anchor';
import { Keypair } from '@solana/web3.js';
import { LiteSVMProvider, fromWorkspace } from 'anchor-litesvm';
import { CreateSystemAccount } from '../target/types/create_system_account';
const IDL = require('../target/idl/create_system_account.json');

it('Create the account', async () => {
  const client = fromWorkspace('');
  const provider = new LiteSVMProvider(client);
  const payer = provider.wallet.payer;
  const program = new Program<CreateSystemAccount>(IDL, provider);
  const connection = provider.connection;

  // Generate a new keypair for the new account
  const newKeypair = new Keypair();

  await program.methods
    .createSystemAccount()
    .accounts({
      payer: payer.publicKey,
      newAccount: newKeypair.publicKey,
    })
    .signers([newKeypair])
    .rpc();

  // Minimum balance for rent exemption for new account
  const lamports = await connection.getMinimumBalanceForRentExemption(0);

  // Check that the account was created
  const accountInfo = await connection.getAccountInfo(newKeypair.publicKey);
  assert(accountInfo.lamports === lamports);
});