使用 Mocha 模拟 exec 命令

如何解决使用 Mocha 模拟 exec 命令

我为 azure devops 编写了一个简单的自定义任务，该任务执行一些命令并将其记录在 azure 管道中。但是，我想使用 Mocha 对其进行单元测试。这是我要进行单元测试的 .ts 文件。

index.ts

import tl = require('azure-pipelines-task-lib/task');

function run() {
    
    const child_process = require('child_process')
    var command: string = "some command";
    child_process.exec(command,(errorin: any,stdoutin: any,stderrin: any) => {
             if (errorin) {
                 tl.setResult(tl.TaskResult.Failed,errorin);
                 return;
             }
             else {
                 console.log("stdout: " + stdoutin);
             }
         })          
}


run();

mochatestsuite.ts

import * as path from 'path';
import * as assert from 'assert';
import * as ttm from 'azure-pipelines-task-lib/mock-test';

describe('Sample task tests',function () {

    before( function() {

    });

    after(() => {

    });

    it('should succeed',function(done: Mocha.Done) {
        this.timeout(10000);
    
        let tp = path.join(__dirname,'mochatest.js');
        let tr: ttm.MockTestRunner = new ttm.MockTestRunner(tp);
    
        tr.run();
        console.log(tr.succeeded);
        assert.equal(tr.succeeded,true,'should have succeeded. Error: '+tr.errorIssues[0]);
        assert.equal(tr.warningIssues.length,"should have no warnings");
        assert.equal(tr.errorIssues.length,tr.errorIssues[0]);
        done();
    });

});

mochatest.ts

import path = require('path');
import ma = require('azure-pipelines-task-lib/mock-answer');
import tmrm = require('azure-pipelines-task-lib/mock-run');

import child_process = require('child_process')

let taskPath = path.join(__dirname,'..','index.js');
let tmr: tmrm.TaskMockRunner = new tmrm.TaskMockRunner(taskPath);


let a: ma.TaskLibAnswers = <ma.TaskLibAnswers>{
    
    exec: {
        "some command": <ma.TaskLibAnswerExecResult> {
            "code": 0,"stdout": "Success"
        }
    }
    
}

tmr.setAnswers(a);
tmr.run();

这似乎不起作用。 我收到这个错误。 AssertionError [ERR_ASSERTION]：应该成功了。错误：错误：命令失败：某些命令 'some' 未被识别为内部或外部命令