adding validator tests.

laravel/validation/validator.php

@@ -208,7 +208,7 @@ class Validator {
 	 */
 	protected function validate_required($attribute, $value)
 	{
-		return (is_null($value) or (is_string($value) and trim($value) === ''));
+		return ! (is_null($value) or (is_string($value) and trim($value) === ''));
 	}
 
 	/**

tests/Cases/ValidatorTest.php

+<?php
+
+use Laravel\Validation\Validator;
+
+class ValidatorTest extends PHPUnit_Framework_TestCase {
+
+	public function test_simple_group_of_validations()
+	{
+		$rules = array(
+			'email'    => 'required|email',
+			'password' => 'required|confirmed|min:6',
+			'name'     => 'required|alpha',
+		);
+
+		$attributes = array(
+			'email'                 => 'taylorotwell',
+			'password'              => 'something',
+			'password_confirmation' => 'something',
+			'name'                  => 'taylor5',
+		);
+
+		$messages = array('name_alpha' => 'The name must be alphabetic!');
+
+		$validator = Validator::make($attributes, $rules, $messages);
+
+		$this->assertFalse($validator->valid());
+		$this->assertFalse($validator->errors->has('password'));
+	}
+
+}
\ No newline at end of file