Add test

Author: haszi

tests/GH-225.phpt

@@ -0,0 +1,26 @@
+--TEST--
+GH-225 - SaveConfig tries to overwrite readonly property
+--ARGS--
+--docbook tests/data/bug-GH-225.xml --quit
+--FILE--
+<?php
+namespace phpdotnet\phd;
+
+if (\file_exists(__DIR__ . "/../phd.config.php")) {
+    \unlink(__DIR__ . "/../phd.config.php");
+}
+
+\file_put_contents(__DIR__ . "/../phd.config.php",    
+"<?php
+return array (
+  'copyright' => 'Should not be imported',
+);");
+
+require_once __DIR__ . "/../render.php";
+?>
+--CLEAN--
+<?php
+\unlink(__DIR__ . "/../phd.config.php");
+?>
+--EXPECTF--
+%s[%d:%d:%d - Heads up              ]%s Loaded config from existing file

tests/data/bug-GH-225.xml

@@ -0,0 +1,2 @@
+<test>
+</test>