solana-program-examples/tokens/token-2022/mint-close-authority/anchor/tests/mint-close-authority.ts

import * as anchor from "@coral-xyz/anchor";
import { Program } from "@coral-xyz/anchor";
import { MintCloseAuthority } from "../target/types/mint_close_authority";
import { TOKEN_2022_PROGRAM_ID, closeAccount } from "@solana/spl-token";

describe("mint-close-authority", () => {
  // Configure the client to use the local cluster.
  const provider = anchor.AnchorProvider.env();
  const connection = provider.connection;
  const wallet = provider.wallet as anchor.Wallet;
  anchor.setProvider(provider);

  const program = anchor.workspace
    .MintCloseAuthority as Program<MintCloseAuthority>;

  const mintKeypair = new anchor.web3.Keypair();

  it("Create Mint with Close Authority", async () => {
    const transactionSignature = await program.methods
      .initialize()
      .accounts({ mintAccount: mintKeypair.publicKey })
      .signers([mintKeypair])
      .rpc({ skipPreflight: true });
    console.log("Your transaction signature", transactionSignature);
  });

  it("Close Mint with Anchor CPI", async () => {
    const transactionSignature = await program.methods
      .close()
      .accounts({ mintAccount: mintKeypair.publicKey })
      .rpc({ skipPreflight: true });
    console.log("Your transaction signature", transactionSignature);
  });

  it("Create Mint with Close Authority again", async () => {
    const transactionSignature = await program.methods
      .initialize()
      .accounts({ mintAccount: mintKeypair.publicKey })
      .signers([mintKeypair])
      .rpc({ skipPreflight: true });
    console.log("Your transaction signature", transactionSignature);
  });

  it("Close Mint using @solana/spl-token", async () => {
    const transactionSignature = await closeAccount(
      connection,
      wallet.payer, // Transaction fee payer
      mintKeypair.publicKey, // Mint Account address
      wallet.publicKey, // Account to receive lamports from closed account
      wallet.publicKey, // Close Authority for Mint Account
      undefined, // Additional signers
      undefined, // Confirmation options
      TOKEN_2022_PROGRAM_ID // Token Extension Program ID
    );
    console.log("Your transaction signature", transactionSignature);
  });
});