solana-program-examples/tokens/nft-minter/solang/tests/nft-minter.ts

import * as anchor from "@coral-xyz/anchor";
import { Program } from "@coral-xyz/anchor";
import { NftMinter } from "../target/types/nft_minter";
import { PublicKey, SystemProgram, SYSVAR_RENT_PUBKEY } from "@solana/web3.js";
import { Metaplex } from "@metaplex-foundation/js";
import {
  ASSOCIATED_TOKEN_PROGRAM_ID,
  getAssociatedTokenAddressSync,
  TOKEN_PROGRAM_ID,
} from "@solana/spl-token";

describe("nft-minter", () => {
  // Configure the client to use the local cluster.
  const provider = anchor.AnchorProvider.env();
  anchor.setProvider(provider);

  // Generate a new keypair for the data account for the program
  const dataAccount = anchor.web3.Keypair.generate();

  // Generate a mint keypair
  const mintKeypair = anchor.web3.Keypair.generate();
  const wallet = provider.wallet;
  const connection = provider.connection;

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

  // Metadata for the NFT
  const nftTitle = "Homer NFT";
  const nftSymbol = "HOMR";
  const nftUri =
    "https://raw.githubusercontent.com/solana-developers/program-examples/new-examples/tokens/tokens/.assets/nft.json";

  it("Is initialized!", async () => {
    // Initialize data account for the program, which is required by Solang
    const tx = await program.methods
      .new()
      .accounts({ dataAccount: dataAccount.publicKey })
      .signers([dataAccount])
      .rpc();
    console.log("Your transaction signature", tx);
  });

  it("Create an NFT!", async () => {
    // Get the metadata address for the mint
    const metaplex = Metaplex.make(connection);
    const metadataAddress = await metaplex
      .nfts()
      .pdas()
      .metadata({ mint: mintKeypair.publicKey });

    const tx = await program.methods
      .createTokenMint(
        wallet.publicKey, // freeze authority
        0, // 0 decimals for NFT
        nftTitle, // NFT name
        nftSymbol, // NFT symbol
        nftUri // NFT URI
      )
      .accounts({ 
        payer: wallet.publicKey,
        mint: mintKeypair.publicKey,
        metadata: metadataAddress,
        mintAuthority: wallet.publicKey,
        metadataProgramId: new PublicKey("metaqbxxUerdq28cj1RbAWkYQm3ybzjb6a8bt518x1s"),
        rentAddress: SYSVAR_RENT_PUBKEY,
      })
      .signers([mintKeypair])
      .rpc({ skipPreflight: true });
    console.log("Your transaction signature", tx);
  });

  it("Mint the NFT to your wallet!", async () => {
    // Derive wallet's associated token account address for mint
    const tokenAccount = getAssociatedTokenAddressSync(
      mintKeypair.publicKey,
      wallet.publicKey
    );

    const tx = await program.methods
      .mintTo()
      .accounts({ 
        payer: wallet.publicKey, // payer
        tokenAccount: tokenAccount, // associated token account address
        mint: mintKeypair.publicKey, // mint
        owner: wallet.publicKey, // owner of token account
       })
      .rpc({ skipPreflight: true });
    console.log("Your transaction signature", tx);
  });
});