From 3ae5fdc646b2f37ca6ff3e9eacad568e2faa83ee Mon Sep 17 00:00:00 2001
From: Jason Quense <monastic.panic@gmail.com>
Date: Tue, 29 Mar 2016 10:55:49 -0400
Subject: [PATCH] [changed] `null` is not considered an empty value for isValid

---
 src/mixed.js  |  2 +-
 test/mixed.js | 14 ++++++++++----
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/src/mixed.js b/src/mixed.js
index 9cc540f..686e514 100644
--- a/src/mixed.js
+++ b/src/mixed.js
@@ -327,7 +327,7 @@ SchemaType.prototype = {
       name: 'oneOf',
       test(value) {
         let valids = this.schema._whitelist
-        if (valids.length && !(valids.has(value) || isAbsent(value)))
+        if (valids.length && !(value === undefined || valids.has(value)))
           return this.createError({
             params: {
               values: valids.values().join(', ')
diff --git a/test/mixed.js b/test/mixed.js
index 4a43a0a..067ea6c 100644
--- a/test/mixed.js
+++ b/test/mixed.js
@@ -71,21 +71,27 @@ describe( 'Mixed Types ', function(){
   })
 
   it('should ignore absent values', function(){
-    return  Promise.all([
+    return Promise.all([
       mixed()
         .oneOf(['hello'])
         .isValid(undefined)
         .should.eventually.equal(true),
       mixed()
+        .nullable()
         .oneOf(['hello'])
-        .required()
         .isValid(null)
         .should.eventually.equal(false),
-      string()
+      mixed()
+        .oneOf(['hello'])
+        .required()
+        .isValid(undefined)
+        .should.eventually.equal(false),
+      mixed()
         .nullable()
         .oneOf(['hello'])
+        .required()
         .isValid(null)
-        .should.eventually.equal(true)
+        .should.eventually.equal(false)
     ])
   })