My First Try at TDD: How I Test Asynchronous Code in Mocha With async/await Syntax

Thu, 05 Jan 2017 13:56:47 +0000

Every body knows that writing unit test is very important during programming. However, it is not an easy job, especially when it comes to asynchronous code.

Initially, callback has to be used to test asynchronous code:

describe('User Profile', function(){
  it('can get user profile', function(done){
    getProfile('bulkan', function(err, result){
      if(err) {
        done(err)
      }
      assert.equal(result.userName, 'bulkan');
      done();
    });
  });
});

This kind of test could easily turned out to be a [callback hell][ch] when the logic become complex. Thank god, with the advent of promise, testing asynchronous code is not that much depressing now.

TDD on Lotp's Blog

My First Try at TDD: How I Test Asynchronous Code in Mocha With async/await Syntax