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saucepoint/USDCTest.t.sol

Created October 2, 2022 22:39
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  1. saucepoint created this gist Oct 2, 2022.
    38 changes: 38 additions & 0 deletions USDCTest.t.sol
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    // SPDX-License-Identifier: MIT
    pragma solidity ^0.8.13;

    // author: saucepoint
    // run with a mainnet --fork-url such as:
    // forge test --fork-url https://rpc.ankr.com/eth

    import "forge-std/Test.sol";

    // temporary interface for minting USDC
    // should be implemented more extensively, and organized somewhere
    interface IUSDC {
    function balanceOf(address account) external view returns (uint256);
    function mint(address to, uint256 amount) external;
    function configureMinter(address minter, uint256 minterAllowedAmount) external;
    function masterMinter() external view returns (address);
    }

    contract USDCTest is Test {
    // USDC contract address on mainnet
    IUSDC usdc = IUSDC(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48);

    function setUp() public {
    // spoof .configureMinter() call with the master minter account
    vm.prank(usdc.masterMinter());
    // allow this test contract to mint USDC
    usdc.configureMinter(address(this), type(uint256).max);

    // mint $1000 USDC to the test contract (or an external user)
    usdc.mint(address(this), 1000e6);
    }

    function testBalance() public {
    // verify the test contract has $1000 USDC
    uint256 balance = usdc.balanceOf(address(this));
    assertEq(balance, 1000e6);
    }
    }