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libcxx/test/std/re/re.regex/re.regex.assign/assign.pass.cpp

39 lines
1.1 KiB
C++

//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <regex>
// template <class charT, class traits = regex_traits<charT>> class basic_regex;
// basic_regex& assign(const basic_regex& that);
#include <regex>
#include <cassert>
#include "test_macros.h"
int main()
{
std::regex r1("(a([bc]))");
std::regex r2;
r2.assign(r1);
assert(r2.flags() == std::regex::ECMAScript);
assert(r2.mark_count() == 2);
assert(std::regex_search("ab", r2));
#ifndef TEST_HAS_NO_EXCEPTIONS
bool caught = false;
try { r2.assign("(def", std::regex::extended); }
catch(std::regex_error &) { caught = true; }
assert(caught);
assert(r2.flags() == std::regex::ECMAScript);
assert(r2.mark_count() == 2);
assert(std::regex_search("ab", r2));
#endif
}