chore: refactor cloudsql_postgresql test from repo-tools (GoogleCloudPlatform#1722)

Author: sofisl

appengine/cloudsql_postgresql/package.json

@@ -13,21 +13,22 @@
  "node": ">=8.0.0"
  },
  "scripts": {
- "unit-test": "mocha test/*.test.js --timeout=30000",
+ "unit-test": "mocha test/createTables.test.js --timeout=30000 && mocha test/server.test.js",
  "start-proxy": "! pgrep cloud_sql_proxy > /dev/null && cloud_sql_proxy -instances=$INSTANCE_CONNECTION_NAME=tcp:$SQL_PORT &",
- "system-test": "repo-tools test app -- server.js",
+ "system-test": "mocha test/serverListening.test.js --exit",
  "system-test-proxy": "npm run start-proxy; npm run system-test",
  "all-test": "npm run unit-test && npm run system-test",
  "test": "npm -- run all-test"
  },
  "dependencies": {
+ "chai": "^4.2.0",
  "express": "^4.16.4",
  "knex": "^0.20.0",
  "pg": "^8.0.0",
- "prompt": "^1.0.0"
+ "prompt": "^1.0.0",
+ "wait-port": "^0.2.7"
  },
  "devDependencies": {
- "@google-cloud/nodejs-repo-tools": "^3.3.0",
  "mocha": "^7.0.0",
  "proxyquire": "^2.1.0",
  "sinon": "^9.0.0",

appengine/cloudsql_postgresql/test/serverListening.test.js

@@ -0,0 +1,15 @@
+const waitPort = require('wait-port');
+const {expect} = require('chai');
+const PORT = process.env.PORT || 8080;
+const childProcess = require('child_process');
+const path = require('path');
+const appPath = path.join(__dirname, '../server.js');
+
+describe('server listening', () => {
+ it('should be listening', async () => {
+ const child = childProcess.exec(`node ${appPath}`);
+ const isOpen = await waitPort({port: PORT});
+ expect(isOpen).to.be.true;
+ process.kill(child.pid, 'SIGTERM');
+ });
+});