// Copyright 2015 Samsung Electronics Co., Ltd.
// Copyright 2015 University of Szeged.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

var r;

r = new RegExp ("a");
assert (r.exec ("a") == "a");
assert (r.exec ("b") == undefined);

r = new RegExp ("abc");
assert (r.exec ("abc") == "abc");

r = new RegExp ("a*");
assert (r.exec ("aaa") == "aaa");
assert (r.exec ("b") == "");

r = new RegExp ("a+");
assert (r.exec ("aaa") == "aaa");
assert (r.exec ("b") == undefined);

r = new RegExp ("ab*");
assert (r.exec ("a") == "a");
assert (r.exec ("ab") == "ab");
assert (r.exec ("abbbb") == "abbbb");
assert (r.exec ("bbb") == undefined);

r = new RegExp ("a?");
assert (r.exec ("a") == "a");
assert (r.exec ("b") == "");

r = new RegExp ("a{4}");
assert (r.exec ("aaa") == undefined);
assert (r.exec ("aaaaa") == "aaaa");
assert (r.exec ("aaaa") == "aaaa");

r = new RegExp ("a{2,6}");
assert (r.exec ("a") == undefined);
assert (r.exec ("aa") == "aa");
assert (r.exec ("aaaaaa") == "aaaaaa");
assert (r.exec ("aaaaaaa") == "aaaaaa");

r = new RegExp (".*");
assert (r.exec ("abcdefghijkl") == "abcdefghijkl");

r = /\n/;
assert (r.exec ("\n") == "\n");
