From 04836dc700a8e22fdb604f0640cb72be5e0194c9 Mon Sep 17 00:00:00 2001
From: tokiedokie <thetokiedokie@gmail.com>
Date: Sun, 27 Sep 2020 00:54:26 +0900
Subject: refactor(std/example): Inconsistencies in the example tests (#7684)

---
 std/examples/echo_server_test.ts | 47 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 std/examples/echo_server_test.ts

(limited to 'std/examples/echo_server_test.ts')

diff --git a/std/examples/echo_server_test.ts b/std/examples/echo_server_test.ts
new file mode 100644
index 000000000..1a5286a0e
--- /dev/null
+++ b/std/examples/echo_server_test.ts
@@ -0,0 +1,47 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+import { assertStrictEquals, assertNotEquals } from "../testing/asserts.ts";
+import { BufReader, ReadLineResult } from "../io/bufio.ts";
+import { dirname, fromFileUrl } from "../path/mod.ts";
+
+const moduleDir = dirname(fromFileUrl(import.meta.url));
+
+Deno.test("[examples/echo_server]", async () => {
+  const encoder = new TextEncoder();
+  const decoder = new TextDecoder();
+  const process = Deno.run({
+    cmd: [Deno.execPath(), "run", "--allow-net", "echo_server.ts"],
+    cwd: moduleDir,
+    stdout: "piped",
+  });
+
+  let conn: Deno.Conn | undefined;
+  try {
+    const processReader = new BufReader(process.stdout);
+    const message = await processReader.readLine();
+
+    assertNotEquals(message, null);
+    assertStrictEquals(
+      decoder.decode((message as ReadLineResult).line).trim(),
+      "Listening on 0.0.0.0:8080",
+    );
+
+    conn = await Deno.connect({ hostname: "127.0.0.1", port: 8080 });
+    const connReader = new BufReader(conn);
+
+    await conn.write(encoder.encode("Hello echo_server\n"));
+    const result = await connReader.readLine();
+
+    assertNotEquals(result, null);
+
+    const actualResponse = decoder
+      .decode((result as ReadLineResult).line)
+      .trim();
+    const expectedResponse = "Hello echo_server";
+
+    assertStrictEquals(actualResponse, expectedResponse);
+  } finally {
+    conn?.close();
+    process.stdout.close();
+    process.close();
+  }
+});
-- 
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