Added SecurityTest.

tests/unit/framework/helpers/SecurityTest.php

+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yiiunit\framework\helpers;
+
+use yiiunit\TestCase;
+use yii\helpers\Security;
+
+class SecurityTest extends TestCase
+{
+	public function testPasswordHash()
+	{
+		$password = 'secret';
+		$hash = Security::generatePasswordHash($password);
+		$this->assertTrue(Security::validatePassword($password, $hash));
+		$this->assertFalse(Security::validatePassword('test', $hash));
+	}
+
+	public function testHashData()
+	{
+		$data = 'known data';
+		$key = 'secret';
+		$hashedData = Security::hashData($data, $key);
+		$this->assertFalse($data === $hashedData);
+		$this->assertEquals($data, Security::validateData($hashedData, $key));
+		$hashedData[strlen($hashedData) - 1] = 'A';
+		$this->assertFalse(Security::validateData($hashedData, $key));
+	}
+
+	public function testEncrypt()
+	{
+		$data = 'known data';
+		$key = 'secret';
+		$encryptedData = Security::encrypt($data, $key);
+		$this->assertFalse($data === $encryptedData);
+		$decryptedData = Security::decrypt($encryptedData, $key);
+		$this->assertEquals($data, $decryptedData);
+	}
+}