From f6713bfabdb419cc17a16a9c99afc48c442525d3 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 0000000000..1a181935f1
--- /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 0000000000..ae1c78d30d
--- /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);
+  }
+}