solana-token-program/clients/js/test/createMint.test.ts

import { generateKeyPairSigner, Account, some, none } from '@solana/kit';
import test from 'ava';
import { fetchMint, Mint, getCreateMintInstructionPlan } from '../src';
import {
  createDefaultSolanaClient,
  generateKeyPairSignerWithSol,
  createDefaultTransactionPlanner,
} from './_setup';

test('it creates and initializes a new mint account', async (t) => {
  // Given an authority and a mint account.
  const client = createDefaultSolanaClient();
  const authority = await generateKeyPairSignerWithSol(client);
  const mint = await generateKeyPairSigner();

  // When we create and initialize a mint account at this address.
  const instructionPlan = getCreateMintInstructionPlan({
    payer: authority,
    newMint: mint,
    decimals: 2,
    mintAuthority: authority.address,
  });

  const transactionPlanner = createDefaultTransactionPlanner(client, authority);
  const transactionPlan = await transactionPlanner(instructionPlan);
  await client.sendTransactionPlan(transactionPlan);

  // Then we expect the mint account to exist and have the following data.
  const mintAccount = await fetchMint(client.rpc, mint.address);
  t.like(mintAccount, <Account<Mint>>{
    address: mint.address,
    data: {
      mintAuthority: some(authority.address),
      supply: 0n,
      decimals: 2,
      isInitialized: true,
      freezeAuthority: none(),
    },
  });
});

test('it creates a new mint account with a freeze authority', async (t) => {
  // Given an authority and a mint account.
  const client = createDefaultSolanaClient();
  const [payer, mintAuthority, freezeAuthority, mint] = await Promise.all([
    generateKeyPairSignerWithSol(client),
    generateKeyPairSigner(),
    generateKeyPairSigner(),
    generateKeyPairSigner(),
  ]);

  // When we create and initialize a mint account at this address.
  const instructionPlan = getCreateMintInstructionPlan({
    payer: payer,
    newMint: mint,
    decimals: 2,
    mintAuthority: mintAuthority.address,
    freezeAuthority: freezeAuthority.address,
  });

  const transactionPlanner = createDefaultTransactionPlanner(client, payer);
  const transactionPlan = await transactionPlanner(instructionPlan);
  await client.sendTransactionPlan(transactionPlan);

  // Then we expect the mint account to exist and have the following data.
  const mintAccount = await fetchMint(client.rpc, mint.address);
  t.like(mintAccount, <Account<Mint>>{
    address: mint.address,
    data: {
      mintAuthority: some(mintAuthority.address),
      freezeAuthority: some(freezeAuthority.address),
    },
  });
});