From a8530bc4e06642b0cf6b602c1c04d39ed9aeca26 Mon Sep 17 00:00:00 2001
From: Masashi Hirano <cherrydog07@gmail.com>
Date: Mon, 1 Oct 2018 02:03:47 +0900
Subject: [PATCH] test: error when empty buffer is passed to filehandle.read()

Added tests to occur error when empty buffer is passed to
filehandle.read() to increase coverage.

PR-URL: https://github.com/nodejs/node/pull/23250
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
---
 test/parallel/test-fs-read-empty-buffer.js | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/test/parallel/test-fs-read-empty-buffer.js b/test/parallel/test-fs-read-empty-buffer.js
index 34e418eac656bf..2f44b9a1843a6b 100644
--- a/test/parallel/test-fs-read-empty-buffer.js
+++ b/test/parallel/test-fs-read-empty-buffer.js
@@ -6,6 +6,7 @@ const assert = require('assert');
 const fs = require('fs');
 const filepath = fixtures.path('x.txt');
 const fd = fs.openSync(filepath, 'r');
+const fsPromises = fs.promises;
 
 const buffer = new Uint8Array();
 
@@ -26,3 +27,15 @@ assert.throws(
     'Received Uint8Array []'
   }
 );
+
+(async () => {
+  const filehandle = await fsPromises.open(filepath, 'r');
+  assert.rejects(
+    () => filehandle.read(buffer, 0, 1, 0),
+    {
+      code: 'ERR_INVALID_ARG_VALUE',
+      message: 'The argument \'buffer\' is empty and cannot be written. ' +
+               'Received Uint8Array []'
+    }
+  );
+})();