Refactored #642 test to reduce it to the actual bug

Reading a property from an interface proxy used to lead to a fatal error,
but should be a notice instead.

Author: Ocramius

tests/language-feature-scripts/lazy-loading-value-holder-interface-proxy.phpt renamed to tests/language-feature-scripts/lazy-loading-value-holder-denies-interface-property-read.phpt

@@ -1,37 +1,27 @@
 --TEST--
-Verifies that lazy loading value holder factory can generate proxy for interfaces.
+Verifies that lazy loading value holder proxies for interfaces disallow public property read attempts
 --FILE--
 <?php
 
 require_once __DIR__ . '/init.php';
 
 interface MyInterface
 {
-    public function do();
-}
-
-class MyClass implements MyInterface
-{
-    public function do()
-    {
-        echo 'Hello';
-    }
 }
 
 $factory = new \ProxyManager\Factory\LazyLoadingValueHolderFactory($configuration);
 
 $proxy = $factory
-    ->createProxy(MyInterface::class, function (& $wrapped, $proxy, $method, array $parameters, & $initializer) {
+    ->createProxy(MyInterface::class, function (& $wrapped, $proxy, $method, array $parameters, & $initializer) : bool {
         $initializer = null;
-        $wrapped     = new MyClass();
+        $wrapped     = new class implements MyInterface {
+        };
+
+        return true;
     });
 
-$proxy->do();
-$proxy->someDynamicProperty = ' World';
 echo $proxy->someDynamicProperty;
 
 ?>
 --EXPECTF--
-Hello
 Notice: Undefined property: MyInterface::$someDynamicProperty %s
- World