test: add dcz output handler when dictionary loading fails

Author: kjdev

tests/ob_dcz_005.phpt

@@ -0,0 +1,24 @@
+--TEST--
+output handler: dcz
+--SKIPIF--
+<?php
+include (dirname(__FILE__) . '/ob_skipif.inc');
+?>
+--GET--
+ob=dictionary
+--ENV--
+HTTP_ACCEPT_ENCODING=zstd,dcz
+HTTP_AVAILABLE_DICTIONARY=:5wg7BLZeirApJAxOdI/QBi8RvwZuIJfPf0TwMo/x/yg=:
+--FILE--
+<?php
+ini_set('zstd.output_compression', 1);
+ini_set('zstd.output_compression_dict', '');
+
+include(dirname(__FILE__) . '/data.inc');
+echo "{$data}";
+?>
+--EXPECT_EXTERNAL--
+files/ob_data.zstd
+--EXPECTHEADERS--
+Content-Encoding: zstd
+Vary: Accept-Encoding