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>
109 lines
3.1 KiB
C++
109 lines
3.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <string>
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// explicit basic_string(basic_string_view<CharT, traits> sv, const Allocator& a = Allocator()); // constexpr since C++20
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#include <algorithm>
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#include <cassert>
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#include <stdexcept>
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#include <string_view>
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#include <string>
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#include <type_traits>
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#include "min_allocator.h"
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#include "test_allocator.h"
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#include "test_macros.h"
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static_assert(!std::is_convertible<std::string_view, std::string const&>::value, "");
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static_assert(!std::is_convertible<std::string_view, std::string>::value, "");
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template <class Alloc, class CharT>
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TEST_CONSTEXPR_CXX20 void test(std::basic_string_view<CharT> sv) {
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typedef std::basic_string<CharT, std::char_traits<CharT>, Alloc> S;
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typedef typename S::traits_type T;
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{
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S s2(sv);
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LIBCPP_ASSERT(s2.__invariants());
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assert(s2.size() == sv.size());
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assert(T::compare(s2.data(), sv.data(), sv.size()) == 0);
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assert(s2.get_allocator() == Alloc());
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assert(s2.capacity() >= s2.size());
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}
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{
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S s2;
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s2 = sv;
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LIBCPP_ASSERT(s2.__invariants());
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assert(s2.size() == sv.size());
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assert(T::compare(s2.data(), sv.data(), sv.size()) == 0);
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assert(s2.get_allocator() == Alloc());
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assert(s2.capacity() >= s2.size());
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}
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}
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template <class Alloc, class CharT>
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TEST_CONSTEXPR_CXX20 void test(std::basic_string_view<CharT> sv, const Alloc& a) {
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typedef std::basic_string<CharT, std::char_traits<CharT>, Alloc> S;
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typedef typename S::traits_type T;
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{
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S s2(sv, a);
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LIBCPP_ASSERT(s2.__invariants());
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assert(s2.size() == sv.size());
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assert(T::compare(s2.data(), sv.data(), sv.size()) == 0);
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assert(s2.get_allocator() == a);
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assert(s2.capacity() >= s2.size());
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}
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{
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S s2(a);
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s2 = sv;
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LIBCPP_ASSERT(s2.__invariants());
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assert(s2.size() == sv.size());
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assert(T::compare(s2.data(), sv.data(), sv.size()) == 0);
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assert(s2.get_allocator() == a);
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assert(s2.capacity() >= s2.size());
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}
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}
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template <class Alloc>
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TEST_CONSTEXPR_CXX20 void test_string(const Alloc& a) {
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typedef std::basic_string_view<char, std::char_traits<char> > SV;
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test<Alloc>(SV(""));
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test<Alloc>(SV(""), Alloc(a));
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test<Alloc>(SV("1"));
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test<Alloc>(SV("1"), Alloc(a));
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test<Alloc>(SV("1234567980"));
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test<Alloc>(SV("1234567980"), Alloc(a));
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test<Alloc>(SV("123456798012345679801234567980123456798012345679801234567980"));
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test<Alloc>(SV("123456798012345679801234567980123456798012345679801234567980"), Alloc(a));
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}
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TEST_CONSTEXPR_CXX20 bool test() {
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test_string(std::allocator<char>());
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test_string(test_allocator<char>());
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test_string(test_allocator<char>(2));
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#if TEST_STD_VER >= 11
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test_string(min_allocator<char>());
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#endif
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return true;
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}
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int main(int, char**) {
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test();
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#if TEST_STD_VER > 17
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static_assert(test());
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#endif
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return 0;
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}
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