Add tests for UCS-4 text conversion

Author: alexdowad

ext/mbstring/tests/other_encodings.phpt

@@ -20,13 +20,22 @@ echo "7bit done\n";
 var_dump(mb_convert_encoding("\x01\x00", "8bit", "UTF-16BE")); // codepoints over 0xFF are illegal for '8-bit'
 echo "8bit done\n";
 
-
 // UCS-2
 echo bin2hex(mb_convert_encoding("\xFF\xFE\x00\x30", "UTF-16BE", "UCS-2")), "\n";
 echo bin2hex(mb_convert_encoding("\xFE\xFF\x30\x00", "UTF-16BE", "UCS-2")), "\n";
 echo bin2hex(mb_convert_encoding("\x00\x30", "UTF-16BE", "UCS-2LE")), "\n";
 echo "UCS-2 done\n";
 
+// UCS-4
+echo bin2hex(mb_convert_encoding("\xFF\xFE\x00\x00\x00\x30\x00\x00", "UTF-16BE", "UCS-4")), "\n";
+echo bin2hex(mb_convert_encoding("\x00\x00\xFE\xFF\x00\x00\x30\x01", "UTF-16BE", "UCS-4")), "\n";
+echo bin2hex(mb_convert_encoding("\x02\x30\x00\x00", "UTF-16BE", "UCS-4LE")), "\n";
+echo bin2hex(mb_convert_encoding("\x00\x00\x30\x03", "UTF-16BE", "UCS-4BE")), "\n";
+
+mb_substitute_character("long");
+echo mb_convert_encoding("\x01\x02\x03", "UTF-8", "UCS-4"), "\n";
+echo "UCS-4 done\n";
+
 ?>
 --EXPECT--
 string(3) "ABC"
@@ -39,3 +48,9 @@ string(1) "%"
 3000
 3000
 UCS-2 done
+3000
+3001
+3002
+3003
+BAD+20300
+UCS-4 done