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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.import { assert, assertEquals } from "../../testing/asserts.ts";import { dirname, fromFileUrl, resolve } from "../../path/mod.ts";
const moduleDir = resolve(dirname(fromFileUrl(import.meta.url)));
async function startServer(): Promise<Deno.ChildProcess> {  const server = new Deno.Command(Deno.execPath(), {    args: [      "run",      "--quiet",      "--allow-net",      "--allow-read",      "server.ts",    ],    cwd: moduleDir,    stdout: "piped",    stderr: "null",    stdin: "null",  });  const child = server.spawn();  const reader = child.stdout.getReader();
  try {    const { value } = await reader.read();    assert(      value && new TextDecoder().decode(value).includes("chat server starting"),    );  } catch {    await child.stdout.cancel();  } finally {    reader.releaseLock();  }
  return child;}
Deno.test({  name: "[examples/chat] GET / should serve html",  async fn() {    const child = await startServer();    try {      const resp = await fetch("http://127.0.0.1:8080/");      assertEquals(resp.status, 200);      assertEquals(resp.headers.get("content-type"), "text/html");      const html = await resp.text();      assert(html.includes("ws chat example"), "body is ok");    } finally {      child.stdout.cancel();      child.kill();    }    await child.status;  },});
Deno.test({  name: "[examples/chat] GET /ws should upgrade conn to ws",  async fn() {    const child = await startServer();    let ws: WebSocket;    try {      ws = new WebSocket("ws://127.0.0.1:8080/ws");      await new Promise<void>((resolve) => {        ws.onmessage = (message) => {          assertEquals(message.data, "Connected: [1]");
          ws.onmessage = (message) => {            assertEquals(message.data, "[1]: Hello");            ws.close();          };
          ws.send("Hello");        };
        ws.onclose = () => {          resolve();        };      });    } catch (err) {      console.log(err);    } finally {      child.stdout.cancel();      child.kill();    }    await child.status;  },});