From 2a0914f39072bbd1468349ed788f2531600d5b2f Mon Sep 17 00:00:00 2001
From: esarbanis <e.sarbanis@gmail.com>
Date: Sun, 29 May 2016 23:44:50 +0300
Subject: [PATCH] Provision for root path when splitting

Closes #16
---
 lib/util.js           |  2 +-
 test/lib/util.spec.js | 23 +++++++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/lib/util.js b/lib/util.js
index cb468545..34fccd9a 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -12,7 +12,7 @@ var uniqueDirs = (exports.uniqueDirs = function(files) {
   var dirs = {};
   files.forEach(function(filepath) {
     var parts = path.dirname(filepath).split(path.sep);
-    var partial = parts[0];
+    var partial = parts[0] || '/';
     dirs[partial] = true;
     for (var i = 1, ii = parts.length; i < ii; ++i) {
       partial = path.join(partial, parts[i]);
diff --git a/test/lib/util.spec.js b/test/lib/util.spec.js
index afa44fce..3132725c 100644
--- a/test/lib/util.spec.js
+++ b/test/lib/util.spec.js
@@ -66,6 +66,29 @@ describe('util', function() {
 
       assert.deepEqual(got, expected);
     });
+
+    it('gets a list of unique directories on absolute paths', function() {
+      var absoluteFiles = files.map(function(path) {
+        return '/' + path;
+      });
+      // not comparing order here, so we sort both
+      var got = util.uniqueDirs(absoluteFiles).sort();
+
+      var expected = [
+        '/',
+        '/a1',
+        '/a2',
+        path.join('/a1', 'b1'),
+        path.join('/a1', 'b1', 'c1'),
+        path.join('/a1', 'b1', 'c2'),
+        path.join('/a1', 'b2'),
+        path.join('/a1', 'b2', 'c1'),
+        path.join('/a1', 'b2', 'c2'),
+        path.join('/a2', 'b1')
+      ].sort();
+
+      assert.deepEqual(got, expected);
+    });
   });
 
   describe('dirsToCreate', function() {