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Test

1.Manager User​

  1. At first we create a Struct "Users" and the same name variable to store the data
struct Users {

    address payable admin;

    address payable alice;

    address payable broker;

    //...
}

Users internal users;

  1. In the setUp() function we initialize the necessary roles
function setUp() public {
    users = Users({
        admin:createUser("admin");
        alice:CreateUser("alice");
        ...
    })
}

 /// @dev Generates a user, labels its address, and funds it with test assets.
    function createUser(string memory name) internal returns (address payable) {
        address payable user = payable(makeAddr(name));
        vm.deal({ account: user, newBalance: 100 ether });
        deal({ token: address(dai), to: user, give: 1_000_000e18 });
        deal({ token: address(usdt), to: user, give: 1_000_000e18 });
        return user;
    }

Refer: https://twitter.com/RightNowIn/status/1761094201071002000

https://rareskills.io/post/invariant-testing-solidity https://twitter.com/DevDacian/status/1732269870014992761 https://twitter.com/DevDacian/status/1758068540756881845 https://twitter.com/DevDacian/status/1732645103867773236 https://twitter.com/DevDacian/status/1747565664506909178 https://twitter.com/DevDacian/status/1733009929508917499 https://paco0x.org/foundry-invariant-test/

2.Tests Proxy Contracts​

https://twitter.com/RightNowIn/status/1748048778467140053

3. Fork Test​

How to fork​

First Go to Alchemy or QucikNode or whaterver you like, get your api

Open the terminal:

anvil --fork-url YOUR_ENDPOINT_URL --fork-block-number 19000000

then you got everything you need

4.Display amounts in exponential form.​

function testDisplay() public {
        uint256 balances = 566645678676;
        console.log("My Balance is :", balances);
        console.log("My Balance is %e", balances);
    }

Output:

[PASS] testDisplay() (gas: 4103)
Logs:
  My Balance is : 566645678676
  My Balance is 5.66645678676e11

5.Colorful Logging​

function testColor() public {
        console.log("Color:", StdStyle.yellow("Hello world"));
        console.log("Color:", StdStyle.blue("Hello world"));
        console.log("Color:", StdStyle.green("Hello world"));
        console.log("Color:", StdStyle.red("Hello world"));
}

6.Using Debug and Inspect understand what EVM do during Code execute​

forge inspect 0.sol:ContractName ir > out.yul

or use Debug

forge test --match-test test_XXX --debug
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