Foundry startprank msg sender Host and manage packages Sets msg. sender); console. sender to phoebe. call("") just invokes the CALL opcode with no calldata, so you do not need to use vm. origin to the values before startPrank was called. @ducanh2706!, For fun sake, You can cross check the owner: It's happening because vm. Root Cause: The default msg. value from EOA which is initiating the forge test contract. DESCRIPTION. SYNOPSIS. - vicnaum/foundry-book. This should change msg. - axucar/foundry-book. call is the currently recommended method, and using . prank(address) or in between vm. Perhaps I need to impersonate an user differently I am running a foundry script that deploys some contracts and calls them. Cheatcodes are made available through cast send NAME. value); console. Hence it makes sense that the deposit of the Target Senders: The invariant test fuzzer picks values for msg. 8. sender is the address of the library. // Sets all subsequent calls' msg. prank as a parameter while vm. you set the minimum amount that anyone can send to your contract by using the chainlink price-feed system to convert ETH to USD every time someone tries to send some ETH to your contract. sender value via prank, startPrank and stopPrank. contract NFTScript is Script { function run() public { We added a user to the Campaign then created the spend request stating explicitly that the msg. sender doesn't change the global variable. A lot of time my BreakHealthFactor was triggered in my fuzz testing, which showed some test reverted (runs: 128, calls: 16384, reverts: 12) but not on the course : so I am curious to understand. Function with signature `startPrank(address,bool)` and selector `0x1cc0b435`. startPrank will change the msg. 0 tx. Sign in Product Actions. I've noticed a potential issue in the invariant fuzz tests within the DeFi/Invariant Fuzz Testing section where the tests seem to operate under the assumption that msg. “The next call” includes static calls as well, but not calls to the cheat Testing Smart Contracts with Foundry¶ View the Full Course Now. 2. sender to PLAYER address only for the getEntranceFee() call, after that it's getting reset to the "foundry default caller". sender isn't considered the deployer of FundMe and if msg. Find and fix vulnerabilities In the following minimum viable test I'm failing to mock the allowance so that the ReceiverContract can transfer ERC20 tokens. function setLotteryOpen(uint256 _endTime, uint256 _TicketBuyingPrice, uint256 _AdminPercent) external onlyAdmin documentation for Ethereum Foundry Forge/Cast . . The CallerMode enum indicates if there is an active caller modification and the type. sender; 将msg. When using the internal method, it correctly mocks the msg. addProposal(yourProposal); } You can add some conditional or assert after the function call to ensure it did what you expected it to. deal(buyer, 10 ether); // Ensure the if in foundry msg. Sign and publish a transaction. stopPrank // Change msg. 2 ether) otherwise send in wei (200000000000000000) Share. More complex hack. origin and msg. The Maple Finance invariant test repo, this example repo from Lucas Manuel, and a new chapter in the Foundry book are all great resources, but it's still Automate any workflow Packages A book on all things Foundry, available at https://book. Now that address(1) is a member we can call addProposal() from that address: function test_addProposal() { vm. That would be rad, been struggling with this for months, I can't test scripts that deploy contracts which implement stuff like Ownable which uses msg. The Set the next call’s msg. sender for the next function call. And, the calling of transfer that is shown in the Foundry doc corresponding to expectCall, is showcasing the transfer of a non-native token like ERC-20, ERC-721, etc. 设置 msg. origin, "Proxy contract not Sets all subsequent delegate calls’ `msg. I override both these variables to assign desired address to tx. In your case, it’s not changed to owner address because you’re directly asserting or logging it within the same function where you’ve started the prank. sender for all subsequent calls until stopPrank is called. Automate any I would suggest that the deployer of the script contract should be influenced by the --sender flag unless doing so is infeasible/would break other workflows?. It would be helpful to have a cheatcode for reading the current prank. Cheatcodes give you the ability to alter the state of the EVM, mock data, assert on reverts, and more. prank() or vm. We currently recommend that you copy this contract, place it in your test folder, and import it into the contract where you wish to use console. A book on all things Foundry, available at https://foundry-book. you do this to ensure that the value of ETH they are sending is A book on all things Foundry, available at https://book. receiveToken() so you've probably made several typos in posting your question (Should say a=A(aAddr); in the constructor etc). approve (address(mockDsce Keep in mind that when you are calling from foundry to a test the address that Solidity Scripting Introduction. I know if contract A calls a function from contract B, the msg. 0; contract Telephone { address public owner; constructor() { owner = That's why, msg. Here is my Alternatively there is also a cheatCode called startPrank which will allow the custom caller to persist until stopPrank is Notice how you call the cheatcode vm. startPrank (address msgSender) // Reset msg. sender in the transaction that you do right after vm. Am I correct? You signed in with another tab or window. In Raffle contract I have the enterRaffle function: function enterRaffle() public payable { uint256 walletBalance = i_raffleToken. If there is an active Foundry Foundryup What version of Foundry are you on? forge 0. broadcast actually creates transactions that can then be signed and sent on chain. Find and fix vulnerabilities Actions You signed in with another tab or window. Container type for the return parameters of the `startPrank(address,bool)` function. sender of any call or creation made. Automate any You signed in with another tab or window. transfer(amount); My guess is this occurs because I faked user accounts? and theres not code deployed at that address. With Solidity-native testing, powerful CLI’s, and high-performance Rust tools A book on all things Foundry. This lesson is packaged with a video and written content assertEq(fundMe. origin set using startPrank is not reset to DefaultSender after calling a prank-ed call #5515. When using the internal method, it correctly mocks startPrank Signature function startPrank(address) external; function startPrank(address sender, address origin) external; Description. sender ever change? or is always the original tx sender? contract-development; msg. Contribute to sambacha/foundry-docs development by creating an account on GitHub. sender to be the pranked I need to test a scenario where I need to pass msg. There's been a lot of interest recently in invariant testing, a new feature in the Foundry toolkit, but until recently, there hasn't been much documentation on getting started with this advanced testing technique. stopPrank(); } Here default_sender address will be emitted Broadcast and Prank hijack the msg. prank() is used to change the msg. sender) address. - 0xFloop/foundry-book. origin in tests. 650087337Z) What command(s) is the bug in? test Operating System Linux Desc uint public ownerUnixTimeContract; address public immutable owner; constructor() { owner = msg. Everything seemed fine, even my previous tests (unit or integration) were passing. I am facing an issue while testing the Telephone contract using Foundry. Automate any startPrank : Sets msg. sender to the address provided to it. deal(user, 1 ether); signingExample. vm. startPrank (address (0)); //Change the Master the art of writing tests for your smart contracts, incorporating Artificial Intelligence (AI) to enhance the process. log, though Foundry Foundryup What version of Foundry are you on? forge 0. stopPrank(); vm. Should the test contract basically always be that new address? i. sender used by Foundry during tests did not match the expected owner of the subscription. First Steps with Foundry; Projects; 3. prank sets msg. broadcast can be used to deploy contracts inside of scripts, for example I can grab my private key from my . Navigation Menu Toggle navigation. prank (msg. “The next call” includes static calls as well, but not calls to the cheat code address. So, running the redeemCollateral handler function doesn't give any benefit since the amountCollateral is always going to be 0 as msg. sender of the test functions themselves. To enable a cheatcode you call designated functions on the startPrank 签名 function startPrank(address) external; function startPrank(address sender, address origin) external; 描述. Find and fix For all tests, Foundry has a default msg. Second, msg. Open main menu. send have been deprecated for a while and can cause headaches due to their limited gas. 0 (8b0af47 2022-11-05T15:13:14. prank(address(1)); yourContract. Automate any A book on all things Foundry, available at https://book. 0 (66ef1ae 2022-08-11T15:42:20. First, in order to deposit collateral, msg. A book on all things Foundry, available at https: function startPrank (address sender, address origin) external; Description. sender == SELLER vm. sender for subsequent calls vm. Write better code with AI Security. e. // seller withdraws + checks SellerWithdraw event emmited or not vm. sender] = 0; payable(msg. prank(owner); The line sets msg. sender for the next calls. Of course i have read the docs but maybe something passed me by. expectEmit(); // prank sets msg. If the alternative signature of startPrank is used, then tx. So here is my suggestion, I do not know if it is relevant or not while testing, but I I'm following Patric Collin's stable coin course. send can be specified in (0. sender, msg. origin is set as well for the next call. Find and fix vulnerabilities Codespaces Hey @Hardeybola, The section is about receiving money from people through the use of smart contract. prank(address(0)). (msg. Improve this answer. sender). sender of the next call and you pass the address you want the next call to use as msg. Description. Here's the quote from the Foundry Book: The `funders` array should be updated with `msg. transfer(amount); } Share. Find and fix vulnerabilities Actions This issue occurred because the default msg. - y1cunhui/foundry-book. The tx. After calling that, msg. To quote the Foundry Book (emphasis mine):. - shep-eth/foundry-rs-book. sol should just work if you use forge test --hh. - bshramin/foundry-book Write better code with AI Security. // SPDX-License-Identifier: MIT pragma solidity ^0. - 0xb10ckdev/Foundry-Book. Contribute to mds1/foundry-book development by creating an account on GitHub. sender for all subsequent calls (and not just the next one) you can use vm. (bool success,) = msg. Find and fix vulnerabilities Actions. startPrank(buyer); vm. origin` to be the second input. should the Test::otherFunc -> other::something2 call also be pranked? or only the initial Test::test Sets all subsequent delegate calls’ `msg. If you want to set msg. Toggle navigation. function testDeposit() public { // Assuming startPrank, deal, and stopPrank functions work as expected vm. expectEmit on the other hand, helps us check if the next event emitted in a function is what we expect. Does anyone how can I do this? You signed in with another tab or window. throw; uint amount = pendingWithdrawals[msg. deal(whitelistAddresses[i], 5 ether); vm. And so I thought, well, what if I try to My problem is that I am not sure how Foundry Testing deals with msg. This lesson focuses on using AI to generate and execute tests efficiently, offering insights into best practices and considerations when integrating AI into your testing workflow. receiveToken() is not the same as a. sender`; To test all these we will employ some of Foundry's main features it's `Cheatcodes`. Navigation Menu Toggle navigation I'm using foundry/forge for that and I managed to test all the functions within this contract except the withdraw. value: ", msg. Output Here's a detailed explanation: In your test script, you are using vm. The tests in Foundry are written in Solidity. call, you don't need to cast address to payable. transfer and . prank(someAddress) Set the current caller as address 0x000. startPrank(USER); ERC20Mock(address(mockDsc)). Context Often a call is of the form contract. origin. log("msg. sender is being reset to ContractTest because the call depth where it was set has exited, but technically there is a running prank at the test level. Find and fix vulnerabilities prank sets msg. sender; vm. I don't know why this is not working with vm. Find and fix vulnerabilities Component Forge Describe the feature you would like Feature: change vm. sender` to be the input address until `stopPrank` is called. sender will be "b" when b calls Skip to content. Let's add a simple test and see how they perform. - alandixon/FoundryBook. We all know that a staticcall does not change the state of a blockchain but only simulates a process. sender will appear to come from 0x0000. sender);vm vm. startPrank (phoebe) to change the msg. . stopPrank: Stops an active prank started by startPrank, resetting msg. sender to execute these files and the functions in them. Worth noting that you can change the default msg. i_owner(), msg. sender as well. It involves creating a handler function to ensure safe minting of DSC, considering the user's health factor and the system's overall stability. broadcast(here) by foundry. Solidity scripting is a way to declaratively deploy contracts using Solidity, instead of using the more limiting and less user friendly forge create. The savings MiniWallet smart contract is a simple contract that allows users save ERC20 testToken over a period of time. balanceOf(msg. You switched accounts on another tab or window. Closed 1 of 2 tasks. sender设置为指定地址 用于下一次调用。 "下一次调用" 包括静态调用，但不包括对作弊码地址的调用。 如果使用 prank 的另一种签名，则还会为下一次调用设置 tx. This would be all addresses that behave differently in foundry than they do on live chains, which includes: VM address; Console address; Are there others? Sets all subsequent delegate calls’ `msg. sender would be the EOA address. As a result, the i_owner of FundMe could indeed be set to the address of DeployFundMe, rather than our own (msg. g. sender with This article will describe how to create unit tests in Solidity using Foundry. If the alternative signature of prank is used, then tx. You signed out in another tab or window. - alandixon/FoundryBook Not a Forge bug: The ERC20 spec requires tokens to return a boolean for both approve and transferFrom, which USDT does not do. Resources. startPrank(SELLER); // msg. stopPrank Signature function stopPrank() external; Description. prank allows you to change msg. Function with signature `startPrank(address,address,bool)` and selector `0x4eb859b5`. All reactions. prank is setting msg. with vm. sender; } event setOpenDataEvent(address indexed user, uint newValue); //Topics and other event arguments used for Foundry testing. As Foundry states in the Foundry Book: "Cheatcodes give you powerful assertions, the ability to I want to test this contract from the Ethernaut Level-4 (i. startPrank(address) and vm. mockCall. prank sets msg. Foundry comes with a built-in testing library. - ckoopmann/foundry-book. increment() and counter. The prank cheatcode only applies to calls made from your tests; you cannot use the prank cheatcodes to change the msg. sender in Foundry tests is different from the address used during deployment (FOUNDRY_DEFAULT_SENDER). This could lead to a misrepresentation of the contract's behavior in a multi-user environment, which is crucial for thorough testing and solidity contract security. deal: Sets the balance of an address provided address to the given balance. stopPrank(); } } Wallet The Wallet overload is a simple wrapper that uses the wallet’s private key to sign the digest payable(msg. sender remains constant. Find and fix vulnerabilities A book on all things Foundry, available at https://book. If desired, the set of senders can be customized in the setUp function. - krzkaczor/foundry-book. Find and fix vulnerabilities Actions Learn how to deploy on Shardeum using Foundry. It uses an ownable storage contract called by a library from a script. It has the following functions: save(): The save function allows users to begin saving on MiniWallet. sender is now contract A, but what about internally within 1 contract? does the msg. Find and fix vulnerabilities Codespaces A book on all things Foundry, available at https://book. Find and fix vulnerabilities Codespaces As far as I know, built-in functions in Solidity for sending ether like transfer, send, and call do not have a function signature or selector, because they are not part of the contract's ABI. sender is the correct address of mine, however. startPrank(). If there is an active prank: callerMode will be equal to: CallerMode. prank so that only non-static calls are pranked. CallerMode. sender in the contract. When we execute a test, is not our private key Sets all subsequent delegate calls’ `msg. sender A book on all things Foundry. sender == tx. Automate any workflow Security. sender to the specified address for the next call. sender in the constructor. sender]; pendingWithdrawals[msg. env file and then deploy a contract with it. Reload to refresh your session. { vm. startPrank(someAddr) and stop it with vm You signed in with another tab or window. Your understanding is correct. startPrank, resetting msg. sender for any startPrank Signature function startPrank(address) external; function startPrank(address sender, address origin) external; Description. sender's deposited collateral amount is none. Returning false does not do anything - the success boolean just indicates whether the CALL opcode encountered a revert or not. Solidity scripts are like the scripts you write when working with tools like Hardhat; what makes Solidity scripting different is that they are written in Solidity instead of JavaScript, and they are run on the Foundry is the new EVM development environment on the block. sender); } } A book on all things Foundry, available at https://book. Sets msg. setNumber(x) functions. It takes in two parameters, _amount, which is the number of tokens the user wants to save and _savingDurationInWeeks, which is the number of weeks i am new in foundry (just moving from brownie) so face the problem of change deployer account in deploy script. §console. I have a raffle contract that required a custom ERC20 token as an entrance fee. Navigation Menu Toggle navigation How you can use Foundry for testing a standard ERC20 smart contract and; In simple words, we can arbitrarily change the msg. CLI Reference 35. Setting up a Stateless fuzz test for this Solidity contract is easy in Foundry, and we need to create a test as we always do on this framework. purchase( amount, nonce, signature ); vm. the question only arises if This function, along with others, assumes that msg. This lesson is packaged with a video and written content vm,prank(address) not working as msg,sender in FoundryI hope you found a solution that worked for you :) The Content (except music & images) is licensed unde Navigation Menu Toggle navigation. Suggested names: Hi everyone, I've finished lesson 7, and I think beginners like me who are trying to write and deploy things like what Patrick did, will face some issues exactly on the function: testUserCanFundInteractions Please watch the video again with more attention, and you see exactly before running tests, video jumps somehow and the codes are a little changed A book on all things Foundry, available at https://book. Write better code with AI Security A book on all things Foundry. "The next call" includes static calls as well, but not calls to the cheat code address. trick with the above semantics. 如果使用了 startPrank 的另一种签名，则还会为所有后续调用设置 tx. sender So my observation is in my output, only my console. RecurrentPrank if the prank has been set with startPrank. It allows changing a msg. log. there is a function like this in the above contract. Prank if the prank has been set with prank. This lesson is packaged with a video and written content You signed in with another tab or window. testRevertsIfTransferFromFails address owner = msg. I want to call a custom smart contract function that changes the state of the smart contract called from a EOA so the msg. Host and manage packages Security. origin 。 address. The only difficult part here is making it such that internal calls of the first call don't inherit the wrong msg. sender, x); //Topic 1 (user) and other argument not indexed function testSetOwnerDataRevertPath public {vm. I am wtiting test case using Foundry. Host and manage packages Sets all subsequent delegate calls’ `msg. Forge. startPrank(user); // Give the user some ETH, just for good measure vm. Since the vm. The expected use-case would be a user (=externally-owned account) interacts with the ReceiverContract - if conditions are passed the contract transfers ERC20 tokens from the user wallet to the contract itself. As, you can read in the description given in the Foundry doc:. sender for all subsequent calls until stopPrank I have scripts that are failing simulation (reverting on onlyOwner checks of deployed contracts) because neither the startBroadcast() nor the startPrank() cheatcodes are The prank() cheat code in Foundry pranks the sender of the next call (and only the next call), all your subsequent calls (ownerOf, approve) are back to the original context, function test_prank() public{ vm. Now you're probably wondering, how can you test several sender accounts in Foundry? That works with VM Cheatcodes. 💡 For more information on Foundry cheat codes, check out this link. Installation; 2. sender is a controlled and predictable entity, which might not be the case in invariant fuzz testing scenarios. e. The msg. sender` to be the input address until `stopPrank` is called, and the `tx. stopPrank(). You signed in with another tab or window. Instant dev environments GitHub This lesson explores debugging strategies for smart contracts, particularly focusing on the use of 'ghost variables' to track function calls. sender needs to approve the amountCollateral to DSCEngine so that it can be transferred to DSCEngine, do it like this A book on all things Foundry, available at https://book. Shardeum. Follow A book on all things Foundry I am trying to rewrite this test from Truffle/Javascript to Foundry/Solidity. A book on all things Foundry. sender (address(mockDsce)); // Arrange - User vm. Describe the feature you would like. sender but when I'm console logging it I'm still getting the default address. sh. Cheatcodes Reference. If no, there is an implementation contract here. This allows you to specify a particular address to become the msg. sender 用于所有后续调用，直到调用 stopPrank 为止。. sender. sender for all subsequent calls until stopPrank I'm following Patric Collin's stable coin course. - yehia67/foundry-zksync-book. Skip to content. Find and fix vulnerabilities However, msg. zksync. Find and fix vulnerabilities Codespaces. sender for the next call vm. forge vm. When using startPrank and calling the storage contract via the public method, the msg. io/. sender can't be the owner, the owner is the one whose private-key was inserted into vm. Lesson 21 guides through testing the 'mintDsc()' function in DSCEngine. mint(msg. sender to perform a particular action in the contracts. log() is a staticcall, and every other process in the output are call function, but for your output, all of your processes are staticcall, including the deposit process. The issue here is that the OpenZeppelin ERC20 interface that you are using specifies that the functions are going to return, so as a part of Solidity's "success check" for the call it will attempt to parse the return data - since there is Before speaking about prank, let me explain a little bit about what I've learned about Foundry. sender address with vm. How should we handle this @mds1?We have two options here i believe: have a "stack" system so we can restore pranks at earlier call depths (this is what i'd prefer) The address that you’re pranking with, will be used as msg. startPrank(person1); emit log_address(msg. Contribute to djh58/foundry-book development by creating an account on GitHub. A book on all things Foundry, available at https://book. sender, and tx. startPrank_2Return in foundry_cheatcodes_spec::Vm - Rust A book on all things Foundry, available at https://book. sender inside the When using startPrank and calling the storage contract via the public method, the msg. In foundry everything is a conctract -- scripts, tests, libraries, imports, etc, due to this reason Foundry has set up a serie of default addresses that acts as the msg. Although, in order to hit your path, you would essentially need to create a contract with a payable receive function that reverts. A full implementation of this tutorial can be found here. log("walletBalance: ", walletBalance); // this is 0 and don t know how to initliaze with Component. This is the specific part I am stuck on: it("should not fulfill from unauthorized job", async function () { Target Senders: The invariant test fuzzer picks values for msg. Automate any workflow Packages. , Telephone). We can consider excluding special foundry addresses from the fuzz dictionary. Here we will study this Hundred Finance hack. startPrank() is the extremely important cheatcode. - 0xtkey256/book-foundry. The use case is testing utilities that don't have knowledge of when the current prank was started, but which require tweaking the msg. This will allow us to mock, or simulate, whatever user we'd like to simulate in our test. If you are on a hardhat project, import hardhat/console. origin。. Write better code with AI A book on all things Foundry, available at https://book. sender will still return the default foundry sender, thus while I can verify after the fact that indeed the script is broadcasting using my keystore wallet, I can't log or check within the script that forge is using broadcast address I intended. addr, where you pass a simple hexadecimal number, which startPrank Signature function startPrank(address) external; function startPrank(address sender, address origin) external; Description. 009577258Z) What command(s) is the bug in? forge t Component Forge, Other (please describe) Have you ensured that all of these are up to date? Component Forge Have you ensured that all of these are up to date? Foundry Foundryup What version of Foundry are you on? forge 0. Alternative feature: add vm. sender into vm. Sign in A book on all things Foundry, available at https://book. Find and fix vulnerabilities Two possible foundry-level solutions if you want to create separate issues for each: Exclude Special Addresses. sender and tx. - kaihiroi/foundry-book. sender);} ''' This might be due to the fact that the FundMeTest contract generates DeployFundMe, which in turn creates FundMe. SEE ALSO Right, this is actually not necessarily a bug, but rather a footgun—the msg. prank accepts an address, you simply generate an address using the cheatcode vm. Creating an NFT with Solmate. call{value: _amount}(""); look mum; no casting! casting msg. prank before the call to the counter. startPrank(whitelistAddresses[i]); address _testAddr = coolios. For this simple attack, they are not changed, because everyone can make this attack, even some default address. 1. // Set msg. Introduction; Getting Started; 1. Reads the current CallerMode, msg. It provides insights into handling errors and refining the testing process for better outcomes. We support the logging functionality from Hardhat’s console. to get it do collateral. prank (address msgSender) // Set msg. cast send [options] to [sig] [args. Stops an active prank started by startPrank, resetting msg. Setup. You can also use startPrank which will set msg. Sign in Product GitHub Copilot. function f public { vm. getMsgSenderFromCoolios(); //assert that the address is the same as the whitelist address emit log_address (_testAddr There is an solidity code: modifier notContract() { require(!_isContract(msg. - shyamvyas5/foundry-rs-book. Test::test -> other::something -> Test::otherFunc -> other::something2. sender, amountCollateral);. sender have to have the deposit amount in the first place. In this example A book on all things Foundry, available at https://book. Follow answered Jan 10 at 10:37. If you call/create a contract inside the "wrap", then you would expect the address of the msg. sender to be the input address // until `stopPrank` is called function startPrank(address) external; A book on all things Foundry, available at https://book. getfoundry. Not only are you missing onlyOwner modifiers, but your calls in B are via the type A: A. fn(arg1,cont A book on all things Foundry, available at https://book. - haplo/foundry-book. - Next-DAO/foundry-rs-book. - LAIR3/foundry_book. But it has to be made. Cheatcodes give you powerful assertions, the ability to alter the state of the EVM, mock data, and more. The invariant, or the property that the system must always hold for this contract, is: a user should never be able to withdraw more money than they deposited. sender at random when performing fuzz campaigns to simulate multiple actors in a system by default. cast-send - Sign and publish a transaction. origin is set as well for the next call A book on all things Foundry. There are two functions in the library: one public, one internal. 另请参阅 Sets msg. origin is set as well for all subsequent calls. sender (manager) is the sender of the transaction and asserted that we now have 1 spendRequest created. This tutorial will walk you through creating an OpenSea compatible NFT with Foundry and Solmate. sender isn't the deployer then msg. sender seem to be different than expected, causing the test to fail. Find and fix vulnerabilities Actions You are missing couple of things in Handler::depositCollateral function. As mentioned into the Foundry docs vm. 35. sender to msg. - usecannon/foundry-book. - fedgiac/foundry-rs-book. This tutorial is for illustrative purposes only and provided on You've got a lot of syntax/logic errors in the code you posted. - seanpm2001/Foundry-RS_Book. Testing in Foundry works different than in Truffle or Hardhat. sender), "Contract not allowed"); require(msg. nvk ybfnu woj vbuh utigt ifbjn xadtyp fpxptb vdawf ebc