From b9832eb3fe61fcbfb6031e3dfce5eff8567a479c Mon Sep 17 00:00:00 2001
From: Trevor Norris <trev.norris@gmail.com>
Date: Thu, 14 Jul 2016 11:57:26 -0600
Subject: [PATCH] bench: add bench for fs.realpath() fix

The benchmarks included also work for the previous JS
implementation of fs.realpath(). In case the new implementation of
realpath() needs to be reverted, we want these changes to stick around.

PR-URL: https://github.com/nodejs/node/pull/7899
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
---
 benchmark/fs/bench-realpath.js     | 46 ++++++++++++++++++++++++++++++
 benchmark/fs/bench-realpathSync.js | 39 +++++++++++++++++++++++++
 2 files changed, 85 insertions(+)
 create mode 100644 benchmark/fs/bench-realpath.js
 create mode 100644 benchmark/fs/bench-realpathSync.js

diff --git a/benchmark/fs/bench-realpath.js b/benchmark/fs/bench-realpath.js
new file mode 100644
index 00000000000..1a181935f14
--- /dev/null
+++ b/benchmark/fs/bench-realpath.js
@@ -0,0 +1,46 @@
+'use strict';
+
+const common = require('../common');
+const fs = require('fs');
+const path = require('path');
+const resolved_path = path.resolve(__dirname, '../../lib/');
+const relative_path = path.relative(__dirname, '../../lib/');
+
+const bench = common.createBenchmark(main, {
+  n: [1e4],
+  type: ['relative', 'resolved'],
+});
+
+
+function main(conf) {
+  const n = conf.n >>> 0;
+  const type = conf.type;
+
+  bench.start();
+  if (type === 'relative')
+    relativePath(n);
+  else if (type === 'resolved')
+    resolvedPath(n);
+  else
+    throw new Error('unknown "type": ' + type);
+}
+
+function relativePath(n) {
+  (function r(cntr) {
+    if (--cntr <= 0)
+      return bench.end(n);
+    fs.realpath(relative_path, function() {
+      r(cntr);
+    });
+  }(n));
+}
+
+function resolvedPath(n) {
+  (function r(cntr) {
+    if (--cntr <= 0)
+      return bench.end(n);
+    fs.realpath(resolved_path, function() {
+      r(cntr);
+    });
+  }(n));
+}
diff --git a/benchmark/fs/bench-realpathSync.js b/benchmark/fs/bench-realpathSync.js
new file mode 100644
index 00000000000..ae1c78d30d1
--- /dev/null
+++ b/benchmark/fs/bench-realpathSync.js
@@ -0,0 +1,39 @@
+'use strict';
+
+const common = require('../common');
+const fs = require('fs');
+const path = require('path');
+const resolved_path = path.resolve(__dirname, '../../lib/');
+const relative_path = path.relative(__dirname, '../../lib/');
+
+const bench = common.createBenchmark(main, {
+  n: [1e4],
+  type: ['relative', 'resolved'],
+});
+
+
+function main(conf) {
+  const n = conf.n >>> 0;
+  const type = conf.type;
+
+  bench.start();
+  if (type === 'relative')
+    relativePath(n);
+  else if (type === 'resolved')
+    resolvedPath(n);
+  else
+    throw new Error('unknown "type": ' + type);
+  bench.end(n);
+}
+
+function relativePath(n) {
+  for (var i = 0; i < n; i++) {
+    fs.realpathSync(relative_path);
+  }
+}
+
+function resolvedPath(n) {
+  for (var i = 0; i < n; i++) {
+    fs.realpathSync(resolved_path);
+  }
+}