solana-program-examples/tokens/nft-minter/anchor/tests/test.ts

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

describe("NFT Minter", () => {
  const provider = anchor.AnchorProvider.env();
  anchor.setProvider(provider);
  const payer = provider.wallet as anchor.Wallet;
  const program = anchor.workspace.NftMinter as anchor.Program<NftMinter>;

  // The metadata for our NFT
  const metadata = {
    name: "Homer NFT",
    symbol: "HOMR",
    uri: "https://raw.githubusercontent.com/solana-developers/program-examples/new-examples/tokens/tokens/.assets/nft.json",
  };

  it("Create an NFT!", async () => {
    // Generate a keypair to use as the address of our mint account
    const mintKeypair = new Keypair();

    // Derive the PDA of the metadata account for the mint.
    const [metadataAddress] = PublicKey.findProgramAddressSync(
      [
        Buffer.from("metadata"),
        TOKEN_METADATA_PROGRAM_ID.toBuffer(),
        mintKeypair.publicKey.toBuffer(),
      ],
      TOKEN_METADATA_PROGRAM_ID
    );

    // Derive the PDA of the master edition account for the mint.
    const [editionAddress] = PublicKey.findProgramAddressSync(
      [
        Buffer.from("metadata"),
        TOKEN_METADATA_PROGRAM_ID.toBuffer(),
        mintKeypair.publicKey.toBuffer(),
        Buffer.from("edition"),
      ],
      TOKEN_METADATA_PROGRAM_ID
    );

    // Derive the associated token address account for the mint and payer.
    const associatedTokenAccountAddress = getAssociatedTokenAddressSync(
      mintKeypair.publicKey,
      payer.publicKey
    );

    const transactionSignature = await program.methods
      .mintNft(metadata.name, metadata.symbol, metadata.uri)
      .accounts({
        payer: payer.publicKey,
        metadataAccount: metadataAddress,
        editionAccount: editionAddress,
        mintAccount: mintKeypair.publicKey,
        associatedTokenAccount: associatedTokenAccountAddress,
        tokenProgram: TOKEN_PROGRAM_ID,
        associatedTokenProgram: ASSOCIATED_TOKEN_PROGRAM_ID,
        tokenMetadataProgram: TOKEN_METADATA_PROGRAM_ID,
        systemProgram: SystemProgram.programId,
        rent: SYSVAR_RENT_PUBKEY,
      })
      .signers([mintKeypair])
      .rpc({ skipPreflight: true });

    console.log("Success!");
    console.log(`   Mint Address: ${mintKeypair.publicKey}`);
    console.log(`   Transaction Signature: ${transactionSignature}`);
  });
});