configuration模拟cli

我试图使用模拟cli来存储cli应用程序的摩卡testingprocess.arv。 我想testing一个消息是console.logged当一个不正确的参数（“imit”）被传递给process.argv（由命令定义）。

我正在尝试修改文档中的示例，但是我不认为我已经正确设置了所有内容。

1. 它通过时，我注释掉“ stdin: require('../mocks/fakeInputStream'), // Hook up a fake input stream ”虽然我知道它不能正常工作
2. 它与TypeError: sourceStream.on is not a function失败TypeError: sourceStream.on is not a function运行时TypeError: sourceStream.on is not a function ，如下所述

有人可以看到我失踪？

/index.js

  var commands = ['init']; function getGitHeadArgs() { return process.argv.slice(2, process.argv.length); } if (getGitHeadArgs().length) { if (!commands.includes(getGitHeadArgs()[0])) { console.log("Silly Githead! That's not a githead command"); } eval(getGitHeadArgs()[0])(); } else { console.log("You didn't tell githead to do anything!"); } 

/testIndex.js

 var assert = require('assert'); var index = require('../index.js'); var mockCli = require("mock-cli"); describe("incorrect argument", function() { it("imit throws an error if an invalid command is raised", function() { var argv = ['node', '../index.js', 'imit']; // Fake argv var stdio = { stdin: require('../mocks/fakeInputStream'), // Hook up a fake input stream stdout: process.stdout, // Display the captured output in the main console stderr: process.stderr // Display the captured error output in the main console }; var kill = mockCli(argv, stdio, function onProcessComplete(error, result) { var exitCode = result.code; // Process exit code var stdout = result.stdout; // UTF-8 string contents of process.stdout var stderr = result.stderr; // UTF-8 string contents of process.stderr assert.equal(exitCode, 0); assert.equal(stdout, "Silly Githead! That's not a githead command\n"); assert.equal(stderr, ''); }); // Execute the CLI task require('../index.js'); // Kill the task if still running after one second setTimeout(kill, 1000); }); 

Answer 1

• ../mocks/fakeInputStream是一个有效的path吗？

• ../mocks/fakeInputStream的对象是../mocks/fakeInputStream的有效实例吗？

源代码在GitHub上可用。

确保满足captureStdin(sourceStream, callback)函数的要求。 该模块使用该函数来捕获您的fakeInputStream并将其fakeInputStream到captureStream 。