From 1a88c3e5f62b8e85c8f40e4334447fa942ac33a6 Mon Sep 17 00:00:00 2001
From: Rich Trott <rtrott@gmail.com>
Date: Wed, 26 Jul 2017 22:41:06 -0700
Subject: [PATCH] test: improve error logging for inspector test

If JSON.parse() fails, print a message showing the JSON that failed to
parse. This is to help with debugging a current test failure on CI.

PR-URL: https://github.com/nodejs/node/pull/14508
Ref: https://github.com/nodejs/node/issues/14507
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
---
 test/inspector/inspector-helper.js | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/test/inspector/inspector-helper.js b/test/inspector/inspector-helper.js
index 88f2431c760c48..53b9ebdca75b54 100644
--- a/test/inspector/inspector-helper.js
+++ b/test/inspector/inspector-helper.js
@@ -64,8 +64,15 @@ function parseWSFrame(buffer, handler) {
   }
   if (buffer.length < bodyOffset + dataLen)
     return 0;
-  const message = JSON.parse(
-    buffer.slice(bodyOffset, bodyOffset + dataLen).toString('utf8'));
+  const jsonPayload =
+    buffer.slice(bodyOffset, bodyOffset + dataLen).toString('utf8');
+  let message;
+  try {
+    message = JSON.parse(jsonPayload);
+  } catch (e) {
+    console.error(`JSON.parse() failed for: ${jsonPayload}`);
+    throw e;
+  }
   if (DEBUG)
     console.log('[received]', JSON.stringify(message));
   handler(message);