diff --git a/server/validate.js b/server/validate.js
index 83048bb4..518e4079 100644
--- a/server/validate.js
+++ b/server/validate.js
@@ -12,7 +12,7 @@ function root(dir, fn) {
     
     if (dir === '/')
         return;
-        
+    
     const fs = require('fs');
     
     fs.stat(dir, (error) => {
diff --git a/test/server/validate.js b/test/server/validate.js
index 1c068887..bd028f71 100644
--- a/test/server/validate.js
+++ b/test/server/validate.js
@@ -1,7 +1,15 @@
 'use strict';
 
 const test = require('tape');
+const sinon = require('sinon');
+
 const before = require('../before');
+const dir = '../..';
+
+const validatePath = `${dir}/server/validate`;
+const exitPath = `${dir}/server/exit`;
+
+const validate = require(validatePath);
 
 test('validate: root: bad', (t) => {
     const config = {
@@ -19,3 +27,37 @@ test('validate: root: bad', (t) => {
     t.end();
 });
 
+test('validate: root: /', (t) => {
+    const fn = sinon.stub();
+    validate.root('/', fn);
+    
+    t.notOk(fn.called, 'should not call fn');
+    t.end();
+});
+
+test('validate: editor: not valid', (t) => {
+    const fn = sinon.stub();
+    
+    clean();
+    require(exitPath);
+    stub(exitPath, fn);
+    
+    const {editor} = require(validatePath);
+    const msg = 'cloudcmd --editor: could be "dword", "edward" or "deepword" only';
+    
+    editor('hello');
+    
+    t.ok(fn.calledWith(msg), 'should call fn');
+    
+    t.end();
+});
+
+function clean() {
+    delete require.cache[require.resolve(validatePath)];
+    delete require.cache[require.resolve(exitPath)];
+}
+
+function stub(name, fn) {
+    require.cache[require.resolve(name)].exports = fn;
+}
+