From e6059086944c27e7d499200738327426b2072f78 Mon Sep 17 00:00:00 2001
From: Flaise <Flaise.Saffron@gmail.com>
Date: Sun, 9 Mar 2014 11:07:52 -0500
Subject: [PATCH] Added alphanumeric validator for convenience.

---
 lib/validators.js       |  3 +++
 test/test-validators.js | 20 ++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/lib/validators.js b/lib/validators.js
index 46e0a40..da83e6c 100644
--- a/lib/validators.js
+++ b/lib/validators.js
@@ -175,3 +175,6 @@ exports.date = function (message) {
     };
 };
 
+exports.alphanumeric = function(message) {
+    return exports.regexp(/^[a-zA-Z0-9]*$/, message || 'Letters and numbers only.');
+};
diff --git a/test/test-validators.js b/test/test-validators.js
index fa9fdc4..fce0ef8 100644
--- a/test/test-validators.js
+++ b/test/test-validators.js
@@ -247,3 +247,23 @@ exports.color = function (test) {
     async.parallel(tests, test.done);
 };
 
+exports.alphanumeric = function (test) {
+    function makeTest(message, data, expected) {
+        return function (callback) {
+            validators.alphanumeric(message)('form', {data: data}, function(err) {
+                test.equals(err, expected);
+                callback();
+            });
+        };
+    }
+
+    var tests = [
+        makeTest(undefined, 'asdf', undefined),
+        makeTest(undefined, '278', undefined),
+        makeTest(undefined, '%', 'Letters and numbers only.'),
+        makeTest(' qwer', 'a a', ' qwer'),
+        makeTest('_r ', ' 1 ', '_r ')
+    ];
+
+    async.parallel(tests, test.done);
+};