Fayetteville.js // Serverless Live Demo Project

readme.md

• Endpoint that receives GET query parameters a & b, which are integers, and returns the product of the two integers

handler.js

'use strict';

module.exports.multiply = (event, context, callback) => {
  let { queryStringParameters: {a, b} } = event;

  const response = {
    statusCode: 200,
    body: a * b
  };

  callback(null, response);
};

multiplier.spec.js

const handler = require("./handler.js");

describe('Multipler', () => {
  it('returns 64 if a and b are 8', () => {
    const a = 8
    const b = 8
    const event = {
      queryStringParameters: {
        a,
        b
      }
    }
    const context = {}
    const cb = (error, response) => {
      const data = JSON.parse(response.body)
      expect(data).toBe(a * b)
    }
    handler.multiply(event, context, cb)
  })
})

package.json

{
  "name": "multiplier",
  "version": "1.0.0",
  "description": "",
  "main": "handler.js",
  "directories": {
    "test": "tests"
  },
  "scripts": {},
  "author": "",
  "license": "ISC",
  "dependencies": {
    "serverless": "^1.26.1"
  },
  "devDependencies": {
    "jest": "^22.4.3"
  }
}

serverless.yml

service: multiplier

provider:
  name: aws
  runtime: nodejs6.10

functions:
  hello:
    handler: handler.multiply
    events:
      - http:
          path: /multiply
          method: get