From 8d05a1590aaeab07050e019ac892e1ebacac456d Mon Sep 17 00:00:00 2001
From: cjihrig <cjihrig@gmail.com>
Date: Mon, 20 Aug 2018 09:10:06 -0400
Subject: [PATCH] test: cover error case in os getCheckedFunction()
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getCheckedFunction() is used internally by the os module to
handle errors from the binding layer in several methods. This
commit adds a test for the case where the binding layer returns
an error.

PR-URL: https://github.com/nodejs/node/pull/22394
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
---
 test/parallel/test-os-checked-function.js | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 test/parallel/test-os-checked-function.js

diff --git a/test/parallel/test-os-checked-function.js b/test/parallel/test-os-checked-function.js
new file mode 100644
index 00000000000..04c2c3a1f82
--- /dev/null
+++ b/test/parallel/test-os-checked-function.js
@@ -0,0 +1,15 @@
+'use strict';
+// Monkey patch the os binding before requiring any other modules, including
+// common, which requires the os module.
+process.binding('os').getHomeDirectory = function(ctx) {
+  ctx.syscall = 'foo';
+  ctx.code = 'bar';
+  ctx.message = 'baz';
+};
+
+const common = require('../common');
+const os = require('os');
+
+common.expectsError(os.homedir, {
+  message: /^A system error occurred: foo returned bar \(baz\)$/
+});