path fs: move `path.exists*` to `fs.exists*`

`path.exists*` functions show a deprecation warning and call functions
from `fs`. They should be removed later.

test: fix references to `path.exists*` in tests

test fs: add test for `fs.exists` and `fs.existsSync`

doc: reflect moving `path.exists*` to `fs`

1 files changed, 5 insertions, 9 deletions

diff --git a/lib/path.js b/lib/path.js
index b70225b1d6..6a744dfeca 100644
--- a/lib/path.js
+++ b/lib/path.js
@@ -21,6 +21,7 @@
 
 
 var isWindows = process.platform === 'win32';
+var _deprecationWarning = require('util')._deprecationWarning;
 
 
 // resolves . and .. elements in a path array with directory names there
@@ -402,19 +403,14 @@ exports.extname = function(path) {
 
 
 exports.exists = function(path, callback) {
-  process.binding('fs').stat(path, function(err, stats) {
-    if (callback) callback(err ? false : true);
-  });
+  _deprecationWarning('path', '`path.exists` is now called `fs.exists`');
+  require('fs').exists(path, callback);
 };
 
 
 exports.existsSync = function(path) {
-  try {
-    process.binding('fs').stat(path);
-    return true;
-  } catch (e) {
-    return false;
-  }
+  _deprecationWarning('path', '`path.exists` is now called `fs.exists`');
+  return require('fs').existsSync(path);
 };