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libcxx/test/std/strings/basic.string/string.capacity/empty.pass.cpp

45 lines
998 B
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.
//
//===----------------------------------------------------------------------===//
// <string>
// bool empty() const noexcept;
#include <string>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
template <class S>
void
test(const S& s)
{
ASSERT_NOEXCEPT(s.empty());
assert(s.empty() == (s.size() == 0));
}
int main()
{
{
typedef std::string S;
test(S());
test(S("123"));
test(S("12345678901234567890123456789012345678901234567890"));
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
test(S());
test(S("123"));
test(S("12345678901234567890123456789012345678901234567890"));
}
#endif
}