Callback validation, fixed bootstrap

library/Respect/Validation/Exceptions/CallbackException.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace Respect\Validation\Exceptions;
+
+use Exception;
+
+class CallbackException extends Exception
+{
+    
+}

library/Respect/Validation/Rules/AbstractRule.php

@@ -28,4 +28,12 @@ abstract class AbstractRule
         return $this->messages;
     }
 
+    protected function getStringRepresentation($mixed)
+    {
+        if (is_object($mixed))
+            return get_class($mixed);
+        else
+            return strval($mixed);
+    }
+
 }

library/Respect/Validation/Rules/Callback.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Respect\Validation\Rules;
+
+use Respect\Validation\Validatable;
+use Respect\Validation\Rules\AbstractRule;
+use Respect\Validation\Exceptions\CallbackException;
+
+class Callback extends AbstractRule implements Validatable
+{
+    const MSG_CALLBACK = 'Callback_1';
+    protected $messages = array(
+        self::MSG_CALLBACK => '%s does not validate against the provided callback.'
+    );
+    protected $callback;
+
+    public function __construct($callback)
+    {
+        $this->callback = $callback;
+    }
+
+    public function validate($input)
+    {
+        return call_user_func($this->callback, $input);
+    }
+
+    public function assert($input)
+    {
+        if (!$this->validate($input))
+            throw new CallbackException(
+                sprintf($this->getMessage(self::MSG_CALLBACK),
+                    $this->getStringRepresentation($input)
+                )
+            );
+        return true;
+    }
+
+}

tests/bootstrap.php

@@ -1,6 +1,6 @@
 <?php
 date_default_timezone_set('America/Sao_Paulo');
-set_include_path(get_include_path() . PATH_SEPARATOR . '../library/'. PATH_SEPARATOR . './library/');
+set_include_path('../library/'. PATH_SEPARATOR . './library/' . PATH_SEPARATOR . get_include_path());
 require_once 'SplClassLoader.php';
 $respectLoader = new \SplClassLoader();
 $respectLoader->register();

tests/library/Respect/Validation/Rules/CallbackTest.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Respect\Validation\Rules;
+
+class CallbackTest extends \PHPUnit_Framework_TestCase
+{
+
+    public function testCallbackOk()
+    {
+        $v = new Callback(function(){return true;});
+        $this->assertTrue($v->assert('wpoiur'));
+    }
+
+    /**
+     * @expectedException Respect\Validation\Exceptions\CallbackException
+     */
+    public function testCallbackNot()
+    {
+        $v = new Callback(function(){return false;});
+        $this->assertTrue($v->assert('w poiur'));
+    }
+
+}