fix(std/examples): add tests for examples (#4094)

1 files changed, 6 insertions, 3 deletions

diff --git a/std/examples/chat/server_test.ts b/std/examples/chat/server_test.ts
index d43e41693..0b44e5bce 100644
--- a/std/examples/chat/server_test.ts
+++ b/std/examples/chat/server_test.ts
@@ -1,3 +1,4 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
 import { assert, assertEquals } from "../../testing/asserts.ts";
 import { TextProtoReader } from "../../textproto/mod.ts";
 import { BufReader } from "../../io/bufio.ts";
@@ -22,10 +23,12 @@ async function startServer(): Promise<void> {
 
 const { test } = Deno;
 
-await startServer();
+test("beforeAll", async () => {
+  await startServer();
+});
 
 test("GET / should serve html", async () => {
-  const resp = await fetch("http://0.0.0.0:8080/");
+  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.body.text();
@@ -34,7 +37,7 @@ test("GET / should serve html", async () => {
 
 let ws: WebSocket | undefined;
 test("GET /ws should upgrade conn to ws", async () => {
-  ws = await connectWebSocket("http://0.0.0.0:8080/ws");
+  ws = await connectWebSocket("http://127.0.0.1:8080/ws");
   const it = ws.receive();
   assertEquals((await it.next()).value, "Connected: [1]");
   ws.send("Hello");