错误:SimpleSmartContract尚未部署到检测到的网络(网络/工件不匹配)

Question

我已经开发了一个简单的smartContract。当我运行truffle测试时，它显示了以下错误：我是新手，所以我无法弄清楚。

PS F:\pracdap>松露试验

Compiling your contracts...
===========================
√ Fetching solc version list from solc-bin. Attempt #1
> Compiling .contractsMigrations.sol
> Compiling .contractsSimpleSmartContract.sol       
√ Fetching solc version list from solc-bin. Attempt #1
> Compilation warnings encountered:
Warning: SPDX license identifier not provided in source file. Before publishing, consider adding a comment containing "urce file. Use "SPDX-License-Identifier: UNLICENSED" for non-open-source code. Please see https://spdx.org for more informa
--> /F/pracdap/contracts/SimpleSmartContract.sol

> Artifacts written to C:UsersHPAppDataLocalTemptest--1224-GWVOn3NGyps8
> Compiled successfully using:
- solc: 0.8.3+commit.8d00100c.Emscripten.clang

Contract: SimpleSmartContract
1) should be deployed
> No events were emitted

0 passing (128ms)
1 failing
1) Contract: SimpleSmartContract
should be deployed:
Error: SimpleSmartContract has not been deployed to detected network (network/artifact mismatch)
at Object.checkNetworkArtifactMatch (F:nodenode_modulestrufflebuildwebpack:packagescontractlibutilsindex.js
at Function.deployed (F:nodenode_modulestrufflebuildwebpack:packagescontractlibcontractconstructorMethods.j
at processTicksAndRejections (internal/process/task_queues.js:93:5)
at Context.<anonymous> (testsimpleSmartContract.js:5:33)

实体代码

pragma solidity >=0.4.22 <0.9.0;
contract SimpleSmartContract {
}

节点js。测试代码

const SimpleSmartContract = artifacts.require('SimpleSmartContract');
contract('SimpleSmartContract', () => {
it('should be deployed', async () => {
const simpleSmartContract = await SimpleSmartContract.deployed();
assert(simpleSmartContract.address !== '');
});
});

Answer 1

看起来您没有为SimpleSmartContract添加迁移文件。在Migrations目录中创建一个名为2_deploy_contracts.js的文件。在其中添加以下代码：

const SimpleSmartContract=artifacts.require("SimpleSmartContract"(；module.exports=函数(部署程序({deployer.deploy(SimpleSmartContract(；}

然后尝试运行测试。

Answer 2

尝试使用迁移。。。如果显示任何错误，请告诉我。

Answer 3

const SimpleSmartContract = artifacts.require("SimpleSmartContract");
module.exports = async function(deployer, _network, accounts) {
await deployer.deploy(SimpleSmartContract);
};

您应该在迁移文件夹中创建一个新的"迁移文件"，名称(可能(为2_deploy_contracts.js.

异步函数参数：

deployer：合同的部署
_network：指定的网络(truffle config.js(
accounts：部署时访问truffle帐户(I.E Solidity构造函数参数(

参考编号：https://trufflesuite.com/docs/truffle/getting-started/running-migrations.html

Answer 4

在我的情况下，我收到了同样的错误。在阅读了很多网站和答案后，我解决了我的问题，包括在迁移日志控制台上生成的网络id：

MyContract.setNetwork(<network id from console migrate>)