Build the Future of Web3 on Aptos

module 0xCAFE::BasicCoin {
  // Only included in compilation for testing. Similar to #[cfg(testing)]
  // in Rust. Imports the `Signer` module from the MoveStdlib package.
  #[test_only]
  use std::signer;

  struct Coin has key {
      value: u64,
  }

  public fun mint(account: signer, value: u64) {
      move_to(&account, Coin { value })
  }

  // Declare a unit test. It takes a signer called `account` with an
  // address value of `0xC0FFEE`.
  #[test(account = @0xC0FFEE)]
  fun test_mint_10(account: signer) acquires Coin {
      let addr = signer::address_of(&account);
      mint(account, 10);
      // Make sure there is a `Coin` resource under `addr` with a value of `10`.
      // We can access this resource and its value since we are in the
      // same module that defined the `Coin` resource.
      assert!(borrow_global<Coin>(addr).value == 10, 0);
  }
}