Adding test for xzopen with invalid mode

Author: Payden Sutherland

tests/xzopen_error.phpt

@@ -0,0 +1,35 @@
+--TEST--
+Test xzopen() function : error conditions 
+--SKIPIF--
+<?php 
+if (!extension_loaded("xz")) {
+	print "skip - XZ extension not loaded"; 
+}	 
+?>
+--FILE--
+<?php
+/* Prototype  : resource xzopen(string filename, string mode)
+ * Description: Open a xz file and return a xz file pointer 
+ * Source code: ext/xz/xz.c
+ * Alias to functions: 
+ */
+
+echo "*** Testing xzopen() : error conditions ***\n";
+
+
+//Test gzopen with one more than the expected number of arguments
+echo "\n-- Testing xzopen() function with invalid mode --\n";
+$filename = 'string_val';
+$mode = 'a';
+var_dump( xzopen($filename, $mode) );
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing xzopen() : error conditions ***
+
+-- Testing xzopen() function with invalid mode --
+
+Warning: xzopen(): Can only open in read (r) or write (w) mode.
+bool(false)
+===DONE===