标签: truffle

我用这个例子写了Crowdsale .但我无法发送事务,我的测试失败并出现错误:

 Contract: Crowdsale should accept payments after start:
     AssertionError: expected promise to be fulfilled but it was rejected with 'Error: VM Exception while processing the transaction: revert'

我试图将汽油价格设置为这样的交易,crowdsale.sendTransaction({value, from: buyer, gas: 4712388})但它对我没有帮助.

我的众筹:

pragma solidity ^0.4.16;

interface token {
  function transfer(address receiver, uint amount) external;
}

contract Crowdsale {
  address public beneficiary;
  uint public fundingGoal;
  uint public amountRaised;
  uint public deadline;
  uint public price;
  token public tokenReward;
  mapping(address => uint256) public balanceOf;

  event FundTransfer(address backer, …

当我尝试安装 truffle 时，出现以下错误：-

我之前已经安装了 Node.js，并且还安装了 pip。

PS C:\Users\pk199\Documents> npm install -g truffle

npm ERR! code 1
npm ERR! path C:\Users\pk199\AppData\Roaming\npm\node_modules\truffle\node_modules\ganache\node_modules\leveldown
npm ERR! command failed
npm ERR! command C:\Windows\system32\cmd.exe /d /s /c node-gyp rebuild
npm ERR! gyp info it worked if it ends with ok
npm ERR! gyp info using node-gyp@8.3.0
npm ERR! gyp info using node@16.13.1 | win32 | x64
npm ERR! gyp info find Python using Python version 3.10.1 found at "C:\Users\pk199\AppData\Local\Programs\Python\Python310\python.exe"
npm ERR! gyp ERR! find VS
npm …

I am new to Truffle and going through the Metacoin tutorial; I followed all the steps but when I do truffle compile, I get the following:

Error: Failed to fetch the Solidity compiler from the following locations: https://relay.trufflesuite.com/solc/bin/,https://solc-bin.ethereum.org/bin/,https://ethereum.github.io/solc-bin/bin/. Are you connected to the internet?

I am connected to Internet and using: Truffle v5.5.26 (core: 5.5.26) Ganache v7.4.0 Solidity - 0.8.13 (solc-js) Node v16.13.1 Web3.js v1.7.4

我无法迁移松露编译带来的标准合同.这是我做的:

truffle init
truffle compile
open other terminal and run testrpc
truffle migrate

并且前三步是平稳操作,但是当我运行松露迁移时,它会出现

Error: No network specified. Cannot determine current network.
    at Object.detect (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:43157:23)
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:200497:19
    at finished (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:43085:9)
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:198408:14
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:68162:7
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:163793:9
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:160353:16
    at replenish (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:160873:25)
    at iterateeCallback (/usr/local/lib/node_modules/truffle/build/cli.bundled.js:160863:17)
    at /usr/local/lib/node_modules/truffle/build/cli.bundled.js:160838:16

我的版本列表:

node 9.1.0
truffle 4.0.1
testrpc 6.0.3

谢谢!

我打算在Hardhat中开发我的智能合约，并在 RSK regtest 本地节点上测试它们。我找到了Truffle regtest 配置。

development: {
  host: "127.0.0.1",
  port: 4444,
  network_id: "*"
},

hardhat.config.js在 RSK regtest 上运行测试需要什么配置？

我有一个关于Solidity合约的函数.例如.

   function do(x,y)  {
        if ( msg.sender != owner )
            throw;
        // ...
   }

在Truffle环境中,我有一个测试js,如:

//.... part of a promise chain
       .then(
            function (_bool0) {
                assert.isTrue(_bool0,"whoops - should be true");
                return contract.do( "okdoke" , {from: accounts[1]} );
            }).then(
            function (tx_id) {
                //..
                done();
            }
    // ...

return contract.do()会导致导致throw的条件.在此测试的松露测试输出中产生以下内容:

Error: VM Exception while executing transaction: invalid JUMP

在像这样的测试中处理合同函数抛出的习惯用法是什么？抛出是正确的行为.

所以，我一直在关注 ToDo List 以太坊 DApp 上的 Eat The Blocks 教程。完成第 6 步，但在运行命令时npm run dev-front出现此错误。

> Project@1.0.0 dev-front L:\Project
> ENV=development node_modules/.bin/webpack --watch

'ENV' is not recognized as an internal or external command,
operable program or batch file.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! Project@1.0.0 dev-front: `ENV=development node_modules/.bin/webpack --watch`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the Project@1.0.0 dev-front script.
npm ERR! This is probably not a problem with npm. There …

当我使用 truffle 开发智能合约时，每当从 truffle 控制台请求一些数字（例如帐户余额或地址）时；我收到一个 BN 对象，如下所示：

BN {
  negative: 0,
  words: [ 37748736, 3305132, 2220446, <1 empty item> ],
  length: 3,
  red: null
}

该对象是bn.js库的一部分。但我无法找到任何有关如何解释该对象的文档。

我怎么读这个。我想了解该对象中每个字段的含义，并能够手动将其转换为正常数字。

我正在构建一个质押功能，并在授予访问我的令牌的权限后遇到以下错误：

“MetaMask - RPC 错误：无法设置未定义的属性（设置“loadingDefaults”）”

Solidity 合约的质押功能：

    // Staking function
    function depositTokens(uint _amount) public {
        require(_amount > 0, 'Amount has to be > 0');
    // Transfer tether tokens to this contract
    tether.transferFrom(msg.sender, address(this), _amount);

    // Update Staking balance
    stakingBalance[msg.sender] = stakingBalance[msg.sender] + _amount;

    if(!hasStaked[msg.sender]) {
        stakers.push(msg.sender);
    }

    // Update Staking balance
    isStaking[msg.sender] = true;
    hasStaked[msg.sender] = true;
    
    }

质押前端

stakeTokens = (amount) => {
this.setState({loading: true })
this.state.tether.methods.approve(this.state.deBank._address, amount).send({from: this.state.account}).on('transactionHash', (hash) => {
  this.state.deBank.methods.depositTokens(amount).send({from: this.state.account}).on('transactionHash', (hash) => {
    this.setState({loading:false})
  }) …

我正在使用松露部署合同,当我指定气体限制作为我想用于交易的气体时,我总是得到超过气体限制的错误.为什么会这样？

编辑我要做的是将crypto kitties KittyCore.sol合同部署到我的本地devnet.我正在使用松露来部署它.

从另一个页面,如何在使用继承时将松露合同部署到开发网络？,我发现由于存在合同层次结构,我需要按顺序部署合同.我使用了这种技术,并且我能够部署7个合同中的4个,第五个,KittyAuction,给出以下错误:合同代码无法存储,请检查您的燃气量

下面发布的是我的松露部署脚本

var KittyCore = artifacts.require("KittyCore");
var KittyMinting = artifacts.require("KittyMinting");
var KittyAuction = artifacts.require("KittyAuction");
var KittyBreeding = artifacts.require("KittyBreeding");
var KittyOwnership = artifacts.require("KittyOwnership");
var KittyBase = artifacts.require("KittyBase");
var KittyAccessControl = artifacts.require("KittyAccessControl");
var SaleClockAuction = artifacts.require("SaleClockAuction");

module.exports = function (deployer) {
    deployer.deploy(KittyAccessControl).then(function () {
        return deployer.deploy(KittyBase).then(function () {
            return deployer.deploy(KittyOwnership).then(function () {
                return deployer.deploy(KittyBreeding).then(function () {
                    return deployer.deploy(KittyAuction, {
                        gas: 400000
                    }).then(function () {
                        return deployer.deploy(KittyMinting).then(function () {
                            return deployer.deploy(KittyCore);
                        })
                    })
                })
            })
        })
    }); …