6e1dcc9335
While doing this, I also found a few tests that were either clearly incorrect (e.g. testing the wrong function) or that lacked basic test coverage like testing std::string itself (e.g. the test was only checking std::basic_string with a custom allocator). In these cases, I did a few conservative drive-by changes. Differential Revision: https://reviews.llvm.org/D140550 Co-authored-by: Brendan Emery <brendan.emery@esrlabs.com>
74 lines
1.9 KiB
C++
74 lines
1.9 KiB
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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <string>
|
|
|
|
// int compare(const basic_string& str) const // constexpr since C++20
|
|
|
|
#include <string>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
#include "min_allocator.h"
|
|
|
|
TEST_CONSTEXPR_CXX20 int sign(int x) {
|
|
if (x == 0)
|
|
return 0;
|
|
if (x < 0)
|
|
return -1;
|
|
return 1;
|
|
}
|
|
|
|
template <class S>
|
|
TEST_CONSTEXPR_CXX20 void test(const S& s, const S& str, int x) {
|
|
LIBCPP_ASSERT_NOEXCEPT(s.compare(str));
|
|
assert(sign(s.compare(str)) == sign(x));
|
|
}
|
|
|
|
template <class S>
|
|
TEST_CONSTEXPR_CXX20 void test_string() {
|
|
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);
|
|
}
|
|
|
|
TEST_CONSTEXPR_CXX20 bool test() {
|
|
test_string<std::string>();
|
|
#if TEST_STD_VER >= 11
|
|
test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char> > >();
|
|
{ // LWG 2946
|
|
std::string s = " !";
|
|
assert(s.compare({"abc", 1}) < 0);
|
|
}
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
int main(int, char**) {
|
|
test();
|
|
#if TEST_STD_VER > 17
|
|
static_assert(test());
|
|
#endif
|
|
|
|
return 0;
|
|
}
|