Merge pull request #4 from idofri/fix/factory-prop-visibility

fixed visibility of the `Eunit\Cases\Unit_Test::$factory` prop

src/cases/unit-test.php

@@ -26,7 +26,7 @@ abstract class Unit_Test extends \WP_UnitTestCase {
 	/**
 	 * @var WP_UnitTest_Factory|null
 	 */
-	private $factory;
+	protected $factory;
 
 	public function get_namespace() {
 		return getenv( 'EUNIT_TEST_CASE_NAMESPACE' );