add test

Author: devnexen

ext/fileinfo/tests/gh18267.phpt

@@ -0,0 +1,15 @@
+--TEST--
+GH-18267 finfo_file() assertion trigger on NULL stream context
+--EXTENSIONS--
+fileinfo
+--FILE--
+<?php
+$cls = new finfo();
+$f = fopen("test", "r");
+try {
+    $cls->file("test",FILEINFO_NONE, $f);
+} catch (\TypeError $e) {
+    echo $e->getMessage(); 
+}
+--EXPECT--
+finfo::file(): supplied resource is not a valid Stream-Context resource