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import { assertEquals } from "../src/deps_test.ts";import { killServer, startServer } from "./test.utils.ts";const { test } = Deno;
// Test case from https://github.com/denoland/deno/blob/master/std/examples/chat/server_test.ts
test({  name: "[ws] GET / and /ws should serve html and connect to WebSocket",  async fn(t): Promise<void> {    const process = await startServer("./examples/ws/app.ts");    const baseUrl = "http://localhost:8000";
    try {      await t.step("/", async () => {        const response = await fetch(baseUrl + "/");        assertEquals(response.status, 200);        assertEquals(          response.headers.get("content-type"),          "text/html; charset=utf-8",        );        const html = await response.text();        assertEquals(html.includes("ws chat example"), true);      });
      await t.step("/ws", async () => {        const ws = new WebSocket("ws://localhost:8000/ws");        await new Promise<void>((resolve, reject) => {          ws.onmessage = (message) => {            assertEquals(message.data, "Connected: [1]");            ws.onmessage = (message: { data: string }) => {              assertEquals(message.data, "[1]: Hello");
              ws.close();              // reject();              resolve();            };            ws.send("Hello");          };        });      });    } catch (err) {      console.log(err);    } finally {      killServer(process);    }  },});