Add tests for UCS-2 text encoding

Author: alexdowad

ext/mbstring/tests/other_encodings.phpt

@@ -20,6 +20,13 @@ 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";
+
 ?>
 --EXPECT--
 string(3) "ABC"
@@ -28,3 +35,7 @@ string(3) "ABC"
 7bit done
 string(1) "%"
 8bit done
+3000
+3000
+3000
+UCS-2 done