Anthony Ng ng-the-engineer

➜  jest-with-typescript git:(main) ✗ npx jest
 FAIL  source/dummy.test.ts
  ✕ Dummy unit test (3 ms)

...

Test Suites: 1 failed, 1 total
Tests:       1 failed, 1 total
Snapshots: 0 total

➜  jest-with-typescript git:(main) ✗ npx jest
No tests found, exiting with code 1
Run with `--passWithNoTests` to exit with code 0
In /Users/anthonyng/Repo/jest-with-typescript
  2 files checked.
  testMatch: **/__tests__/**/*.[jt]s?(x), **/?(*.)+(spec|test).[tj]s?(x) - 0 matches
  testPathIgnorePatterns: /node_modules/ - 2 matches
  testRegex:  - 0 matches
Pattern: - 0 matches

1. Redis

Redis is used to support the message queue. Run below command to run the offical Redis container

$ docker run --name my-redis-container -p 6379:6379 -d redis

(Optional) To access Redis, check this gist

Redis-cli

Redis-cli allows you to access Redis instance. Run below command to install.

brew tap ringohub/redis-cli

brew update &amp;&amp; brew doctor

Install @babel/cli, @babel/core, @babel/node, and @babel/preset-env

yarn add --dev @babel/cli @babel/core @babel/node @babel/preset-env

Create .babelrc

ES6 babel setup

Install Babel

$ npm install -D babel-cli babel-preset-es2015

Create .babelrc in root folder

Create model programmatically

Create a Json file mymodel.json for a basic model

{
  "TableName": "YOUR_TABLE_NAME",
  "KeySchema": [
    {
 "AttributeName": "KEY_COLUMN_NAME",

	import { sum } from "./dummy";

	test("Dummy unit test", () => {
	const actual = sum(1, 2);
	expect(actual).toBe(3);
	});

	test("Dummy unit test", () => {
	const actual = null; // not implemented yet
	expect(actual).toBe(1);
	});

	export const sum = (a: number, b: number) => {
	return a + b;
	};