feat: tests

backend/proxy/src/main.ts

@@ -20,8 +20,7 @@ import mustache from 'mustache';
 import path from 'path';
 import * as semver from 'semver';
 import {
-  asyncReadFile,
-  ConfigFile,
+  configFile,
   isFileType,
   protocolHardeningParameters,
   SSLFilePaths,
@@ -29,10 +28,9 @@ import {
   SupportedLogFormats,
   TemplateView,
 } from './common.js';
-// @ts-expect-error missing type defs
-import nodePortScanner from 'node-port-scanner';
+import {readFile} from 'fs/promises';
+import PortScanner from './port-scanner.js';
 
-/* eslint-disable unicorn/prefer-module */
 /* eslint-disable unicorn/no-await-expression-member */
 
 /**
@@ -90,9 +88,7 @@ Please expose a port if the container should be accessible by NGINX.`);
 
     // Get a routable network connection
     for (const network in container.NetworkSettings.Networks) {
-      const scan = await nodePortScanner(container.NetworkSettings.Networks[network].IPAddress, [port]);
-
-      if ((scan.ports.open as Array<number>).includes(port)) {
+      if (await PortScanner.isPortFree(port, container.NetworkSettings.Networks[network].IPAddress)) {
         Logger.info(
           `${container.Names[0]} reachable via ${container.NetworkSettings.Networks[network].IPAddress}:${port}`,
         );
@@ -260,7 +256,7 @@ export async function generateMetricsServer(logFormat: string, enableMetrics?: b
  * @param view Data to render template with
  */
 async function renderTemplate(path: string, view: unknown): Promise<string> {
-  const content = await asyncReadFile(path, 'utf8');
+  const content = await readFile(path, 'utf8');
 
   return mustache.render(content, view);
 }
@@ -283,12 +279,7 @@ function generateRateLimitAllowList(entries: string[]): string {
  * @param containers List of container info
  */
 export async function getTemplateView(containers: Dockerode.ContainerInfo[]): Promise<TemplateView> {
-  delete require.cache[require.resolve('config')];
-  // eslint-disable-next-line @typescript-eslint/no-var-requires
-  const config = require('config');
-  const configFile = config as ConfigFile;
-
-  const cors = await asyncReadFile('./fixtures/cors.template', 'utf8');
+  const cors = await readFile('./fixtures/cors.template', 'utf8');
 
   const visibleRoutesPromises = ['/'].map(async route => {
     return renderTemplate(path.join('fixtures', 'visibleRoute.template'), {