add failing test

Author: liamduckett

tests/PHPStan/Analyser/nsrt/bug-13304.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Bug13272Property;
+
+use function PHPStan\Testing\assertType;
+
+function foo(object $bar): void
+{
+	foreach (['qux', 'quux'] as $property) {
+		if (!property_exists($bar, $property)) {
+			throw new \Exception;
+		}
+
+		assertType("object&hasProperty(quux)&hasProperty(qux)", $bar);
+	}
+}