Added ability to start searching from a specified root directory

Pass in a directory as the second parameter and `find-nearest-file` will start it's search there. This defaults to `process.cwd()`. Additionally, added a test for this functionality.
bengourley · Jul 1, 2015 · 0ab505a · 0ab505a
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diff --git a/Readme.md b/Readme.md
@@ -1,7 1,8 @@
 # find-nearest-file
 
-Lookup a filename starting in `process.cwd()`, then `../`, `../../`, all the way
-up to the filesystem root. Returns the found file path or `null`.
 Lookup a filename starting in `process.cwd()` or a specified root directory,
 then `../`, `../../`, all the way up to the filesystem root. Returns then
 found file path or `null`.
 
 ## Installation
 
@@ -14,6 15,7 @@ npm install --save find-nearest-file
 ```js
 var findNearestFile = require('find-nearest-file')
 var file = findNearestFile('.localconfigrc')
 var otherfile = findNearestFile('.localconfigrc', '/start/search/from/here')
 ```
 
 ## Credits

diff --git a/find-nearest-file.js b/find-nearest-file.js
@@ -3,14 3,17 @@ module.exports = find
 var fs = require('fs')
  , path = require('path')
 
-function find(filename) {
 function find(filename, root) {
 
  root = root || process.cwd();
 
  if (!filename) throw new Error('filename is required')
 
  if (filename.indexOf('/') !== -1 || filename === '..') {
  throw new Error('filename must be just a filename and not a path')
  }
 
 
  function findFile(directory, filename) {
 
  var file = path.join(directory, filename)
@@ -33,6 36,6 @@ function find(filename) {
 
  }
 
- return findFile(process.cwd(), filename)
  return findFile(root, filename)
 
 }
diff --git a/test/find-nearest-file.test.js b/test/find-nearest-file.test.js
@@ -67,4 67,22 @@ describe('find-nearest-file', function () {
 
  })
 
  it('should start searching at a different root directory, if provided', function () {
 
  var find = rewire('../')
  , filename = 'a-really-unique-filename-for-testing.test.zzz.__dsf.yup'
  , paths = []
 
  function mockStat(path) {
  paths.push(path)
  throw new Error()
  }
 
  find.__set__('fs', { statSync: mockStat })
  find(filename, '/')
  assert.equal(paths.length, 1)
  assert.equal(paths[0], '/'   filename)
 
  })
 
 })