Add TestHelper\BaseTest with useful test methods

tests/MageTest/TestHelper/BaseTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace MageTest\TestHelper;
+
+/**
+ * Class BaseTest
+ * @package MageTest\TestHelper
+ * @author Jakub Turek <ja@kubaturek.pl>
+ */
+abstract class BaseTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * Returns value of non-public property from given class
+     *
+     * @param string|object $object Object instance or class name
+     * @param string $propertyName Class' or object's property name
+     * @return mixed
+     */
+    final protected function getPropertyValue($object, $propertyName)
+    {
+        $configProperty = new \ReflectionProperty($object, $propertyName);
+        $configProperty->setAccessible(true);
+
+        return  $configProperty->getValue($object);
+    }
+
+    /**
+     * Sets value to given property and given object
+     *
+     * @param object $object Object instance
+     * @param string $propertyName Property name
+     * @param mixed $value Value to set
+     */
+    final protected function setPropertyValue($object, $propertyName, $value)
+    {
+        $configProperty = new \ReflectionProperty($object, $propertyName);
+        $configProperty->setAccessible(true);
+        $configProperty->setValue($object, $value);
+    }
+}