From c4006ddfc35796db1179eca7a4547bb5aec19ba8 Mon Sep 17 00:00:00 2001
From: Rich Trott <rtrott@gmail.com>
Date: Tue, 3 May 2016 11:29:37 -0700
Subject: [PATCH] test: fix unreliable known_issues test

`test-stdout-buffer-flush-on-exit` was not failing reliably on POSIX
machines and not failing at all on Windows. Revised test fails reliably
on POSIX and is skipped (in CI) on Windows where the issue does not
exist.

Fixes: https://github.com/nodejs/node/issues/6527
PR-URL: https://github.com/nodejs/node/pull/6555
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Joao Reis <reis@janeasystems.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
---
 test/known_issues/known_issues.status         | 20 +++++++++++++++++++
 .../test-stdout-buffer-flush-on-exit.js       | 15 ++++++++++----
 2 files changed, 31 insertions(+), 4 deletions(-)
 create mode 100644 test/known_issues/known_issues.status

diff --git a/test/known_issues/known_issues.status b/test/known_issues/known_issues.status
new file mode 100644
index 0000000000..12e4b10d06
--- /dev/null
+++ b/test/known_issues/known_issues.status
@@ -0,0 +1,20 @@
+prefix known_issues
+
+# If a known issue does not apply to a platform, list the test name in the
+# appropriate section below, without ".js", followed by ": SKIP". Example:
+# sample-test                        : SKIP
+
+[true] # This section applies to all platforms
+
+[$system==win32]
+test-stdout-buffer-flush-on-exit: SKIP
+
+[$system==linux]
+
+[$system==macos]
+
+[$system==solaris]
+
+[$system==freebsd]
+
+[$system==aix]
diff --git a/test/known_issues/test-stdout-buffer-flush-on-exit.js b/test/known_issues/test-stdout-buffer-flush-on-exit.js
index f4ea0b5e01..be29081007 100644
--- a/test/known_issues/test-stdout-buffer-flush-on-exit.js
+++ b/test/known_issues/test-stdout-buffer-flush-on-exit.js
@@ -5,16 +5,23 @@ require('../common');
 const assert = require('assert');
 const execSync = require('child_process').execSync;
 
-const longLine = 'foo bar baz quux quuz aaa bbb ccc'.repeat(65536);
+const lineSeed = 'foo bar baz quux quuz aaa bbb ccc';
 
 if (process.argv[2] === 'child') {
+  const longLine = lineSeed.repeat(parseInt(process.argv[4], 10));
   process.on('exit', () => {
     console.log(longLine);
   });
   process.exit();
 }
 
-const cmd = `${process.execPath} ${__filename} child`;
-const stdout = execSync(cmd).toString().trim();
+[16, 18, 20].forEach((exponent) => {
+  const bigNum = Math.pow(2, exponent);
+  const longLine = lineSeed.repeat(bigNum);
+  const cmd = `${process.execPath} ${__filename} child ${exponent} ${bigNum}`;
+  const stdout = execSync(cmd).toString().trim();
+
+  assert.strictEqual(stdout, longLine, `failed with exponent ${exponent}`);
+});
+
 
-assert.strictEqual(stdout, longLine);