refactor: Move WebSocket URL handling to utility functions

test/unit/server/notifications/WebSocketSubscription2021/WebSocket2021Util.test.ts

@@ -0,0 +1,27 @@
+import type { IncomingMessage } from 'http';
+import {
+  generateWebSocketUrl, parseWebSocketRequest,
+} from '../../../../../src/server/notifications/WebSocketSubscription2021/WebSocket2021Util';
+
+describe('WebSocket2021Util', (): void => {
+  describe('#generateWebSocketUrl', (): void => {
+    it('generates a WebSocket link with a query parameter.', async(): Promise<void> => {
+      expect(generateWebSocketUrl('http://example.com/', '123456')).toBe('ws://example.com/?auth=123456');
+
+      expect(generateWebSocketUrl('https://example.com/foo/bar', '123456'))
+        .toBe('wss://example.com/foo/bar?auth=123456');
+    });
+  });
+
+  describe('#parseWebSocketRequest', (): void => {
+    it('parses the request.', async(): Promise<void> => {
+      const request: IncomingMessage = { url: '/foo/bar?auth=123%24456' } as any;
+      expect(parseWebSocketRequest(request)).toEqual({ path: '/foo/bar', id: '123$456' });
+    });
+
+    it('returns an empty path and no id if the url parameter is undefined.', async(): Promise<void> => {
+      const request: IncomingMessage = {} as any;
+      expect(parseWebSocketRequest(request)).toEqual({ path: '/' });
+    });
+  });
+});