From b23f2461cbe80da6756ffa6da29bc92f98c44fc2 Mon Sep 17 00:00:00 2001
From: Rich Trott <rtrott@gmail.com>
Date: Tue, 20 Jun 2017 09:56:05 -0700
Subject: [PATCH] test: refactor test-stream2-writable

* Use common.mustCall() to confirm that _write() is called only once.
* Check that _write() is called with the correct argument

PR-URL: https://github.com/nodejs/node/pull/13823
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
---
 test/parallel/test-stream2-writable.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/parallel/test-stream2-writable.js b/test/parallel/test-stream2-writable.js
index ccdc56d6af4c0a..2af3f683a23478 100644
--- a/test/parallel/test-stream2-writable.js
+++ b/test/parallel/test-stream2-writable.js
@@ -294,7 +294,9 @@ for (let i = 0; i < chunks.length; i++) {
 {
   // Verify that end(chunk) twice is an error
   const w = new W();
-  w._write = common.noop;
+  w._write = common.mustCall((msg) => {
+    assert.strictEqual(msg.toString(), 'this is the end');
+  });
   let gotError = false;
   w.on('error', function(er) {
     gotError = true;