Node.js AWS Lambda Unit Test with a Mock Context object

some-lambda-func.spec.js

'use strict';

const expect = require('chai').expect
 , SomeLambda = require('./some-lambda-func')
 , MockContext = require('./mock-lambda-context');

describe('Some Lambda Func', function() {
  let ctx;
  
  before(function() {
    ctx = new MockContext();
  });
  
  describe('When Some param is greater than zero', function() {
    before(function(done) {
      SomeLambda({someParam: 10}, ctx, done)
    });
    
    it('should succeed with Yay', function() {
      expect(ctx.succeed.calledWith('Yay')).to.equal(true)
    });
    
    after(function() {
      //reset counters
      ctx.reset();
    })
    
  })
});