From 26c3f6612d08a88ea22cd5606731a2e1489112b7 Mon Sep 17 00:00:00 2001
From: Rich Trott <rtrott@gmail.com>
Date: Mon, 4 Jun 2018 11:34:09 +0200
Subject: [PATCH] test: improve debug output in trace-events test

test-trace-events-fs-sync is swallowing useful information when it
fails. This change results in more information being displayed.
---
 test/parallel/test-trace-events-fs-sync.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/test/parallel/test-trace-events-fs-sync.js b/test/parallel/test-trace-events-fs-sync.js
index 60ab5efa3a1d3d..94f7a94b935254 100644
--- a/test/parallel/test-trace-events-fs-sync.js
+++ b/test/parallel/test-trace-events-fs-sync.js
@@ -3,6 +3,7 @@ const common = require('../common');
 const assert = require('assert');
 const cp = require('child_process');
 const fs = require('fs');
+const util = require('util');
 
 const tests = new Array();
 const traceFile = 'node_trace.1.log';
@@ -118,7 +119,8 @@ for (const tr in tests) {
   const proc = cp.spawnSync(process.execPath,
                             [ '--trace-events-enabled',
                               '--trace-event-categories', 'node.fs.sync',
-                              '-e', tests[tr] ]);
+                              '-e', tests[tr] ],
+                            { encoding: 'utf8' });
   // Some AIX versions don't support futimes or utimes, so skip.
   if (common.isAIX && proc.status !== 0 && tr === 'fs.sync.futimes') {
     continue;
@@ -128,7 +130,7 @@ for (const tr in tests) {
   }
 
   // Make sure the operation is successful.
-  assert.strictEqual(proc.status, 0, tr + ': ' + proc.stderr);
+  assert.strictEqual(proc.status, 0, `${tr}:\n${util.inspect(proc)}`);
 
   // Confirm that trace log file is created.
   assert(common.fileExists(traceFile));