How to test a single function in dapptools?

Question

I have a list of functions I'm trying to test with dapptools, but I only want to test one. How do I accomplish this?

// SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;

import "../DappLottery.sol";
import "ds-test/test.sol";

contract DappLotteryTest is DSTest {
    DappLottery public dappLottery;

    function setUp() public {
        dappLottery = new DappLottery();
    }

    function test_consumer_can_start_lottery() public {
        bool response = dappLottery.startLottery();
        assertTrue(response);
    }

    function test_consumer_can_end_lottery() public {
        bool response = dappLottery.end();
        assertTrue(response);
    }
}

Answer 1

You can use the -m "match" flag to search for a regex string that matches the test name you want.

For example:

dapp test -m test_consumer_can_end_lottery

Or

dapp test -m test_consumer_can_start_lottery