Testing child_process.exec stdout

Question

I\'m trying to test the output of child process with mocha.

My test looks like this:

var should = require(\"should\"),
    exec = require(\"child_pro         


        

Answer 1

Years later, mocha has matured and supports testing asynchronous code.

Simply add a callback (usually named done) to it() and Mocha will know that it should wait for this function to be called to complete the test.

const should = require("should"),
    { exec } = require("child_process");

describe('users', function() {
  describe('andrei', function() {
    it('should be part of group dev', function(done) {
      exec('id andrei', function(error, stdout, stderr) {
        stdout.should.containEql('dev');
        done();
      })
    })
  })
})