1 files changed, 49 insertions, 0 deletions
diff --git a/ext/mbstring/tests/mb_substr_error1.phpt b/ext/mbstring/tests/mb_substr_error1.phpt
new file mode 100644
index 0000000..e48b319
--- /dev/null
+++ b/ext/mbstring/tests/mb_substr_error1.phpt
@@ -0,0 +1,49 @@
+--TEST--
+Test mb_substr() function : error conditions - Pass incorrect number of args
+--SKIPIF--
+<?php
+extension_loaded('mbstring') or die('skip');
+function_exists('mb_substr') or die("skip mb_substr() is not available in this build");
+?>
+--FILE--
+<?php
+/* Prototype  : string mb_substr(string $str, int $start [, int $length [, string $encoding]])
+ * Description: Returns part of a string 
+ * Source code: ext/mbstring/mbstring.c
+ */
+
+/*
+ * Pass incorrect number of arguments to mb_substr() to test behaviour
+ */
+
+echo "*** Testing mb_substr() : error conditions ***\n";
+
+//Test mb_substr with one more than the expected number of arguments
+echo "\n-- Testing mb_substr() function with more than expected no. of arguments --\n";
+$str = 'string_val';
+$start = 10;
+$length = 10;
+$encoding = 'string_val';
+$extra_arg = 10;
+var_dump( mb_substr($str, $start, $length, $encoding, $extra_arg) );
+
+// Testing mb_substr with one less than the expected number of arguments
+echo "\n-- Testing mb_substr() function with less than expected no. of arguments --\n";
+$str = 'string_val';
+var_dump( mb_substr($str) );
+
+echo "Done";
+?>
+--EXPECTF--
+*** Testing mb_substr() : error conditions ***
+
+-- Testing mb_substr() function with more than expected no. of arguments --
+
+Warning: mb_substr() expects at most 4 parameters, 5 given in %s on line %d
+NULL
+
+-- Testing mb_substr() function with less than expected no. of arguments --
+
+Warning: mb_substr() expects at least 2 parameters, 1 given in %s on line %d
+NULL
+Done