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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import EventEmitter from "./events.ts";import http from "./http.ts";import { ERR_SERVER_NOT_RUNNING } from "./internal/errors.ts";import { assert, assertEquals } from "../testing/asserts.ts";import { deferred } from "../async/deferred.ts";
Deno.test("[node/http listen]", async () => {  {    const server = http.createServer();    assertEquals(0, EventEmitter.listenerCount(server, "request"));  }
  {    const server = http.createServer(() => {});    assertEquals(1, EventEmitter.listenerCount(server, "request"));  }
  {    const promise = deferred<void>();    const server = http.createServer();
    server.listen(() => {      server.close();    });    server.on("close", () => {      promise.resolve();    });
    await promise;  }
  {    const promise = deferred<void>();    const server = http.createServer();
    server.listen().on("listening", () => {      server.close();    });    server.on("close", () => {      promise.resolve();    });
    await promise;  }
  for (const port of [0, -0, 0.0, "0", null, undefined]) {    const promise = deferred<void>();    const server = http.createServer();
    server.listen(port, () => {      server.close();    });    server.on("close", () => {      promise.resolve();    });
    await promise;  }});
Deno.test("[node/http close]", async () => {  {    const promise1 = deferred<void>();    const promise2 = deferred<void>();    // Node quirk: callback gets exception object, event listener does not.    const server = http.createServer().close((err) => {      assert(err instanceof ERR_SERVER_NOT_RUNNING);      promise1.resolve();    });    server.on("close", (err) => {      assertEquals(err, undefined);      promise2.resolve();    });    server.on("listening", () => {      throw Error("unreachable");    });    await promise1;    await promise2;  }
  {    const promise1 = deferred<void>();    const promise2 = deferred<void>();    const server = http.createServer().listen().close((err) => {      assertEquals(err, undefined);      promise1.resolve();    });    server.on("close", (err) => {      assertEquals(err, undefined);      promise2.resolve();    });    server.on("listening", () => {      throw Error("unreachable");    });    await promise1;    await promise2;  }});
Deno.test("[node/http] chunked response", async () => {  for (    const body of [undefined, "", "ok"]  ) {    const expected = body ?? "";    const promise = deferred<void>();
    const server = http.createServer((_req, res) => {      res.writeHead(200, { "transfer-encoding": "chunked" });      res.end(body);    });
    server.listen(async () => {      const res = await fetch(`http://127.0.0.1:${server.address().port}/`);      assert(res.ok);
      const actual = await res.text();      assertEquals(actual, expected);
      server.close(() => promise.resolve());    });
    await promise;  }});
Deno.test("[node/http] request default protocol", async () => {  const promise = deferred<void>();  const server = http.createServer((_, res) => {    res.end("ok");  });  server.listen(() => {    const req = http.request(      { host: "localhost", port: server.address().port },      (res) => {        res.on("data", () => {});        res.on("end", () => {          server.close();        });        assertEquals(res.statusCode, 200);      },    );    req.end();  });  server.on("close", () => {    promise.resolve();  });  await promise;});