Error: SimpleSmartContract has not been deployed to detected network (network/artifact mismatch)

Question

我开发了一个简单的智能合约。当我运行 truffle 测试时，它显示以下 error:i 是新的，所以我无法弄清楚。

PS F:\pracdap> 松露测试

Compiling your contracts...
===========================
√ Fetching solc version list from solc-bin. Attempt #1
> Compiling .\contracts\Migrations.sol
> Compiling .\contracts\SimpleSmartContract.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:\Users\HP\AppData\Local\Temp\test--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:\node\node_modules\truffle\build\webpack:\packages\contract\lib\utils\index.js
      at Function.deployed (F:\node\node_modules\truffle\build\webpack:\packages\contract\lib\contract\constructorMethods.j
      at processTicksAndRejections (internal/process/task_queues.js:93:5)
      at Context.<anonymous> (test\simpleSmartContract.js:5:33)

Solidity 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

您似乎还没有为 SimpleSmartContract 添加迁移文件。在迁移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 = function (deployer) {
      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 'migrations file'，名称（可能）为 2_deploy_contracts.js。

异步函数参数：

deployer: 部署合约
_network: 指定网络(truffle-config.js)
accounts：部署时访问 truffle 帐户（I.E Solidity 构造函数参数）

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

Error: SimpleSmartContract has not been deployed to detected network (network/artifact mismatch)

Error: SimpleSmartContract has not been deployed to detected network (network/artifact mismatch)

solidity

truffle

network-error-logging