Add a unit test that demonstrates a magic getter.

See #27881.



git-svn-id: https://develop.svn.wordpress.org/trunk@28480 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/includes/functions.php

@@ -42,3 +42,10 @@ function _delete_all_posts() {
 	}
 }
 
+class Basic_Object {
+	private $foo = 'bar';
+
+	function __get( $name ) {
+		return $this->$name;
+	}
+}