test: disable colors in test-assert.js

When test/parallel/test-assert.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.

Fixes: https://github.com/nodejs/node/issues/18967
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>
This commit is contained in:
cjihrig 2018-05-12 22:39:09 -04:00
parent 4b00c4fafa
commit b5704859d0
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@ -34,6 +34,12 @@ const { writeFileSync, unlinkSync } = require('fs');
const { inspect } = require('util');
const a = assert;
// 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';
const start = 'Input A expected to strictly deep-equal input B:';
const actExp = '+ expected - actual';