Foundry로 스마트 컨트랙트 테스트

// SPDX-License-Identifier: MIT
pragma solidity 0.8.28;

import { Test } from "forge-std/Test.sol";
import { Counter } from "../src/Counter.sol";

contract CounterTest is Test {
    Counter public counter;

    function setUp() public {
        counter = new Counter();
    }

    function testInitialValue() public view {
        assertEq(counter.value(), 0);
    }

    function testIncrementValueFromZero() public {
        counter.increment(100);
        assertEq(counter.value(), 100);
    }

    function testIncrementValueFromNonZero() public {
        counter.increment(100);
        counter.increment(23);
        assertEq(counter.value(), 123);
    }
}

forge test

Ran 3 tests for test/Counter.t.sol:CounterTest
[PASS] testIncrementValueFromNonZero() (gas: 32298)
[PASS] testIncrementValueFromZero() (gas: 31329)
[PASS] testInitialValue() (gas: 10392)
Suite result: ok. 3 passed; 0 failed; 0 skipped; finished in 5.35ms (3.16ms CPU time)

Ran 1 test suite in 171.04ms (5.35ms CPU time): 3 tests passed, 0 failed, 0 skipped (3 total tests)