string.pass.cpp
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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <string>
// int compare(const basic_string& str) const
#include <string>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
int sign(int x)
{
if (x == 0)
return 0;
if (x < 0)
return -1;
return 1;
}
template <class S>
void
test(const S& s, const S& str, int x)
{
assert(sign(s.compare(str)) == sign(x));
}
int main(int, char**)
{
{
typedef std::string S;
test(S(""), S(""), 0);
test(S(""), S("abcde"), -5);
test(S(""), S("abcdefghij"), -10);
test(S(""), S("abcdefghijklmnopqrst"), -20);
test(S("abcde"), S(""), 5);
test(S("abcde"), S("abcde"), 0);
test(S("abcde"), S("abcdefghij"), -5);
test(S("abcde"), S("abcdefghijklmnopqrst"), -15);
test(S("abcdefghij"), S(""), 10);
test(S("abcdefghij"), S("abcde"), 5);
test(S("abcdefghij"), S("abcdefghij"), 0);
test(S("abcdefghij"), S("abcdefghijklmnopqrst"), -10);
test(S("abcdefghijklmnopqrst"), S(""), 20);
test(S("abcdefghijklmnopqrst"), S("abcde"), 15);
test(S("abcdefghijklmnopqrst"), S("abcdefghij"), 10);
test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), 0);
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
test(S(""), S(""), 0);
test(S(""), S("abcde"), -5);
test(S(""), S("abcdefghij"), -10);
test(S(""), S("abcdefghijklmnopqrst"), -20);
test(S("abcde"), S(""), 5);
test(S("abcde"), S("abcde"), 0);
test(S("abcde"), S("abcdefghij"), -5);
test(S("abcde"), S("abcdefghijklmnopqrst"), -15);
test(S("abcdefghij"), S(""), 10);
test(S("abcdefghij"), S("abcde"), 5);
test(S("abcdefghij"), S("abcdefghij"), 0);
test(S("abcdefghij"), S("abcdefghijklmnopqrst"), -10);
test(S("abcdefghijklmnopqrst"), S(""), 20);
test(S("abcdefghijklmnopqrst"), S("abcde"), 15);
test(S("abcdefghijklmnopqrst"), S("abcdefghij"), 10);
test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), 0);
}
#endif
#if TEST_STD_VER > 3
{ // LWG 2946
std::string s = " !";
assert(s.compare({"abc", 1}) < 0);
}
#endif
return 0;
}