From 7597d45beeba0faa8058c369514274a7d166e6a2 Mon Sep 17 00:00:00 2001
From: cjihrig <cjihrig@gmail.com>
Date: Sun, 13 May 2018 09:27:01 -0400
Subject: [PATCH] test: disable colors in test-assert-deep.js

When test/parallel/test-assert-deep.js is run with a TTY as
stdout, color codes in assertion messages cause the test to fail.
This commit disables colors when stdout is a TTY.

PR-URL: https://github.com/nodejs/node/pull/20695
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
---
 test/parallel/test-assert-deep.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/test/parallel/test-assert-deep.js b/test/parallel/test-assert-deep.js
index 4fa091ef2af..538f4bef49d 100644
--- a/test/parallel/test-assert-deep.js
+++ b/test/parallel/test-assert-deep.js
@@ -7,6 +7,12 @@ const { AssertionError } = assert;
 const defaultMsgStart = 'Input A expected to strictly deep-equal input B:\n' +
                         '+ expected - actual';
 
+// Disable colored output to prevent color codes from breaking assertion
+// message comparisons. This should only be an issue when process.stdout
+// is a TTY.
+if (process.stdout.isTTY)
+  process.env.NODE_DISABLE_COLORS = '1';
+
 // Template tag function turning an error message into a RegExp
 // for assert.throws()
 function re(literals, ...values) {