Setup unit tests using jest

Author: kseo

jest.config.js

@@ -0,0 +1,17 @@
+module.exports = {
+    "roots": [
+        "<rootDir>/src"
+    ],
+    "transform": {
+        "^.+\\.tsx?$": "ts-jest"
+    },
+    "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.tsx?$",
+    "moduleFileExtensions": [
+        "ts",
+        "tsx",
+        "js",
+        "jsx",
+        "json",
+        "node"
+    ],
+}

package.json

@@ -5,7 +5,8 @@
   "license": "Apache-2.0",
   "scripts": {
     "lint": "tsfmt --verify",
-    "start": "ts-node ./bin/www.ts"
+    "start": "ts-node ./bin/www.ts",
+    "test": "npm run lint && jest --env node"
   },
   "dependencies": {
     "codechain-keystore": "git://github.com/CodeChain-io/codechain-keystore.git#a168fc7eb01d31269d6e29ab9075315ae557471b",
@@ -25,10 +26,16 @@
     "@types/debug": "^0.0.30",
     "@types/express": "^4.16.0",
     "@types/http-errors": "^1.6.1",
+    "@types/jest": "^23.3.1",
     "@types/lodash": "^4.14.116",
     "@types/morgan": "^1.7.35",
     "@types/node-sass-middleware": "^0.0.30",
     "@types/request-promise": "^4.1.42",
+    "@types/supertest": "^2.0.5",
+    "jest": "^23.5.0",
+    "superagent": "^3.8.3",
+    "supertest": "^3.1.0",
+    "ts-jest": "^23.1.3",
     "tsc": "^1.20150623.0",
     "tslint": "^5.11.0",
     "tslint-config-prettier": "^1.14.0"

src/__test__/pign.spec.ts

@@ -0,0 +1,14 @@
+import { Application } from "express";
+import { createApp } from "../app";
+import * as request from "supertest";
+
+let app: Application;
+
+beforeEach(async () => {
+    app = (await createApp())[0];
+});
+
+test("ping", async () => {
+    const response = await request(app).get("/ping");
+    expect(response.status).toBe(200);
+});