Questions tagged [truffle]
Questions regarding the implementation and use of the Truffle development and testing environment.
2,927
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How to solve "payable" from the code and a new error came "RangeError: Maximum call stack size exceeded" on solidity with truffle?
Disclaimer I am very new to coding and trying my hardest to break into this space. However, I am having issues with msg.value. On my version of solidity, I have had a lot of issues msg.value. I am ...
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What are the tests that can be or should be written for this smart contract? [closed]
I have the following contract for a dutch auction with a specified function to get the price at any given point.
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4;
import "@openzeppelin/...
- 11
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6
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How to deploy Ethreum Smart Contract on Kava Testnet using kavatools?
suppose I have a contract and want to deploy it on Kava testnet
pragma solidity ^0.8.0;
contract MessageContract {
string message = "Hello World";
function getMessage() public constant ...
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11
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Can you pleaseexplain this smart contract? I understand what it does, but i do't understand the math behind it. How does paidPayouts gets incremented?
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
contract Deed {
address payable public beneficiary;
address public lawyer;
uint public earliest;
uint public amount;
uint ...
- 1
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10
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My test doesn't pass but expectation return correct value (truffle)
I have a voting Contract which contains 3 functions , 1 Struct, 1 mapping, 1 modifier and I use Ownable from openzeppelin :
struct Voter {
bool isRegistered;
bool hasVoted;
...
- 1
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0
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16
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TypeError: contract.methods.mintToken is not a function
I am testing the creation of tokens in ethereum and here's my issue :
I have this error TypeError: contract.methods.mintToken is not a function at HTMLButtonElement.mintToken (token.js:51:32)
It's ...
- 1
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1
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12
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How to use truffle-assertions to check if a constructor will revert?
Say I have a contract:
contract Reverts{
constructor(param1){
require(param1);
}
}
If param1 is false, the constructor should fail and revert state.
truffle-assertions allows me to ...
- 144
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14
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Unable solve the error ""Error: Returned error: the method eth_accounts does not exist/is not available" when I run truffle migrate
I created Polygon edge server and When I run truffle migrate I am getting this weird error
->"Error: Returned error: the method eth_accounts does not exist/is not available" when I tried ...
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17
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facing error while compiling truffle in visual studio code
pragma solidity 0.8.4;
contract Hellowworld{
function hellow() public pure returns (string memory) {
return "hello world";
}
}
this is the simplest code I am using for ...
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1
answer
14
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network error trying to deploy js file using ganache on windows 10 wsl (ubuntu)
Am using wsl(ubuntu) on windows 10.
Problem is, am trying to deploy.js file with node, here's the error result --> (" reason: 'could not detect network', code: 'NETWORK_ERROR', event: '...
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8
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Could not find artifacts for " + import_path + " from any sources"
I'm following this tutorial on creating my own nft and I came across this problem. Can someone help me PS C:\Users\caclc\contracts> truffle migrate
Compiling your contracts...
Everything is up to ...
- 1
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14
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Uniswap V3 NonfungiblePositionManager mint() using truffle/hardhat reverts without reason string
I want to initialize a new liquidity pool and add initial liquidity using uniswap V3-periphery library, using truffle/hardhat as the dev environment. I set hardhat to fork mainnet using infura.
Here ...
- 11
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16
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How to fix SyntaxError: Unexpected identifier while compiling openzepplin smart contract in parity ethereum
I am trying to compile and deploy ERC20PresetMinterPauser smart contract using parity.
it gives me error.
SyntaxError: Unexpected identifier
same smart contract is works fine with remix.
my parity is ...
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8
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how to access ws connection in nodejs when truffle-config enables websockets
here is my truffle-config.js
module.exports = {
networks: {
development: {
host: "127.0.0.1",
port: 9545,
network_id: "*",
websockets: true
...
- 1
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1
answer
20
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How to Call Smart Contract Function After Migrations
In my 2_deploy_contracts.js file, I can successfully migrate all my contracts using the command truffle migrate. My problem is that after migration, I want to call a function from contract D and pass ...
- 117
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31
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Returned error: VM Exception while processing transaction: revert when i use UniswapV2router functions
I'm using my owned cloned UniswapV2 smart contracts(core+periphery) and deployed them using ganache network, so when i start testing functions, i started with createPair() function located in ...
2
votes
1
answer
15
views
Truffle contract factory test with Javascript
Here is my smart contract source code.
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.9;
contract CampaignFactory {
address[] public deployedCampaigns;
function createCampaign(uint ...
- 51
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1
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37
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Storage arrays don't store my input values
I checked other similar topics but I still can't figure out how to solve my problem, the code below is part of my contract,
pragma solidity ^0.8.13;
contract MyContract{
address owner;
...
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0
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8
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Change default signer for transactions
This is an incredibly noob question, but suppose my truffle config file has 5 private keys in its configuration.
Then suppose I have a script.js that calls functions like
await usdc.approve(router....
- 1
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3
answers
46
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Pushing a contract to an array in another contract
I am new to Solidity, and I have a small problem.
For exemple I have these 2 contracts
contract Dog {
string name;
constructor(string _name){
name = _name;
}
}
contract Human {
...
- 3
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1
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21
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Avoid "out of gas" when calling a view function using truffle
I have a rather computationally expensive view function on my smart contract, which works with no problem on rinkeby (calling it from etherscan).
However, deploying the contract into a local chain (on ...
- 101
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17
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I tried a lot in an attempt to fork Mainnet but I am getting this CodedError: connection not open on send()
I am using ethers.js and truffle, while running truffle migrate, I am getting CodedError: connection not open on send() error
This is my truffle-config file
module.exports = {
networks: {
...
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0
answers
12
views
Fork Safemoon, without reward and tax
I want to fork the safemoon Token:
https://github.com/safemoonprotocol/Safemoon.sol/blob/main/Safemoon.sol
with few modifying functions. First of all I only want a fee for the liquidity pool.
I want ...
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0
answers
19
views
Truffle test not running completely
I am a beginner in Solidity and truffle.
Trying to create something from scratch so I am not using anything from openzeppelin.
I created an ERC20 token smart contract and created a second smart ...
1
vote
1
answer
37
views
RPC Error 32603 when deploy new Contract
Im trying to deploy ERC20 contract through web3.
Token Code (OpenZeppelin):
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.14;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
...
- 11
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30
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Problem with funds and incrementing counter
I am writing this app using Truffle and Ganache suite and I am having trouble with a certain transaction. Solidity ver is 0.8.3.
I am using metamask to connect the wallet and importing contacts from ...
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27
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Can not deploy my contract on ganache-cli using ETH mainnet fork
I used ganache-cli in combination with my Infura key to fork ETH mainnet so I could use the Uniswap router in my development environment:
ganache-cli --fork https://mainnet.infura.io/v3/<mykeyhere&...
0
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1
answer
19
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Truffle - Invalid number of parameters for "undefined". Got 0 expected 2!
I have the below js script to deploy my contract to the Ropsten test network. I am using @truffle/hdwallet-provider v2.0.8 and web3.js v1.7.3.
const HDWalletProvider = require('@truffle/hdwallet-...
- 111
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1
answer
30
views
Error Installing Truffle in VS Code?
I'm trying to install truffle on VS Code(in window 10) after installing node.js, npm and ganache.
All the above three have been installed and worked but When I tried to install truffle in VS Code in ...
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14
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why vs code not recognizing the node version
when I install a "truffle for vs code" extension in vs code and try to create a new solidity project then nodejs version is not recognized but I have installed nodejs's correct version.
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1
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23
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VM Exception while processing transaction: revert — Transferring ether from EOA to contract account
Problem summary
I get the following error whenever I try transferring ether from an EOA(externally owned account) to a contract account in one of my functions as seen below. I am currently using the ...
- 105
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42
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Ganache Error - VM Exception while processing transaction
I have installed the following packages:
Truffle v5.5.5 (core: 5.5.5)
Ganache v^7.0.3
Solidity v0.5.16 (solc-js)
Node v16.15.0
Web3.js v1.5.3
Ubuntu 20.4
When executing my transaction the following:
...
- 120
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1
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14
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How to switch between accounts to check Approve functionality on truffle CLI
I am cloning myself of the Openzeppline for my own NFT marketplace.
Mint, enumeration, transferFrom, approve functionalities have been implemented but I have no idea of testing approve functionality ...
- 51
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0
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10
views
Truffle init Problem
I am getting the following error while doing truffle init.
C:\Users\ok\AppData\Roaming\nvm\v8.9.0\node_modules\truffle\build\231.bundled.js:54129
} catch {
^
SyntaxError: Unexpected token {...
- 51
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0
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9
views
Should I use truffle for compiling and deploying my contracts or writing my own compiling script and deploying script?
I'm working on my cli project and in this cli project i need to compile 15 different smart contract and deploying to multiple blockchains for user inputs. I'm using golang for creating this project ...
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0
answers
30
views
view functions error : Returned values aren't valid, did it run Out of Gas?
I'm calling the methods in the deployed smart contracts in Ganache. Other methods are working fine, but the view functions returns an error.
Here's the view function in Solidity:
mapping (address =>...
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1
answer
20
views
Hi,I had written the code for voting purpose.Can you guys help me out to write a truffle testing code for this?
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
contract voting{
address private onlyowner;
uint private Virat =0;
uint private Rohit =0;
constructor(){
onlyowner = msg.sender;
}
...
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42
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EscrowUpgradeable triggers "Ownable: caller is not the owner."
I am newbie and am on Truffle/Openzeppelin stack.
I am following the example/tutorial for Using Escrow Library at https://medium.com/@ethdapp/using-the-openzeppelin-escrow-library-6384f22caa99
and all ...
- 101
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38
views
Uncaught (in promise) TypeError: myFunction.watch is not a function
I'm trying to develop my first DAPP based on this tutorial (https://livebook.manning.com/book/building-ethereum-dapps/chapter-12/) and I'm encountering some errors in the javascript part. In ...
- 1
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votes
1
answer
51
views
Truffle Test Console Logging
I'm having some trouble with Truffle logging configuration. During tests, each submitted transaction and its hash is logged on the console and this one becomes full of useless messages that disturb ...
- 1
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1
answer
24
views
How to deploy a contract from a different account (using truffle)
I want to use an account different than the default account to deploy a contract.
I'm looking for the equivalent of ethers connect() function and I can't seem to find it.
Currently deploying like so ...
- 113
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0
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20
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Deploy a crowdsale contract for a previously deployed ERC20 token
I have deployed an upgradable ERC20 token using ^0.8.4 and I would like to set up an AllocatedCrowdsale from OpenZeppelin for said token. I have set up a second project for the crowdsale using ^0.5.0 ...
- 1
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11
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How to create a external call instance function to truffle suite
Is there a way to instantiate a function of my contract, not using the truffle console but by creating a js file?
if so, how do I do it?
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40
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Problems with find a compiler version matching 0.8.13 with truffle compile
I'm very lost with this issue. I'm trying to make a dapp but when I run truffle compile I get the error that I post on title. Next I run truffle compile --list and a receive this:
$ truffle compile --...
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11
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How can I fix "Stack too deep, try using fewer variables" error?
Every time I try to run this solidity code, I get the Stack Too Deep error. I know what the error means but I do not know how to make it go away. And I also do not know how to transform this code with ...
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0
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24
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Have metamask user pay minting fee, but owner sign transaction. onlyOwner and payable
I want to allow a user to mint an NFT through my React app to a payable function, but I also want to control the URI and Token ID sent to the contract because we use many different folders on IPFS. Is ...
- 101
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1
answer
28
views
Array length returns 0 even if there are elements in it?
pragma solidity >=0.8.13;
contract MyContract {
// ...Variables declared here
constructor() {
// ... Variables initialized here
}
address[] ...
0
votes
1
answer
33
views
Truffle default account private keys
Is there a way in truffle develop tests to access the list of private keys in the same way we can access the list of accounts?
Basically, for every contract I need to test, the truffle test contract ...
- 119
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votes
1
answer
82
views
Encountered an error while attempting to update latest block (error code 1020 on Polygon mainnet)
I'm trying to migrate a smart contract on Polygon (Matic) mainnet through truffle, but I get the following error:
node_modules\@trufflesuite\web3-provider-engine\subproviders\rpc.js:57
const ...
- 290
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0
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17
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Why a transaction function that modifies array state variable returns an invalid length (NaN) back in JS?
I want to know why a function I made that .push an element in the array then immediately followed by return the .length would result in a NaN back in JavaScript (truffle test)? Originally, I intended ...
