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libcxx_old/test/std/re/re.results/re.results.size/empty.pass.cpp

39 lines
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C++

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <regex>
// class match_results<BidirectionalIterator, Allocator>
// size_type size() const;
// bool empty() const;
#include <regex>
#include <cassert>
#include "test_macros.h"
template <class CharT>
void
test()
{
std::match_results<const CharT*> m;
assert(m.empty());
assert(m.size() == 0);
const char s[] = "abcdefghijk";
assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
assert(!m.empty());
assert(m.size() == 3);
}
int main(int, char**)
{
test<char>();
return 0;
}