a40bada91a
This applies clang-format to the std::string unit tests in preparation for landing https://reviews.llvm.org/D140550. Differential Revision: https://reviews.llvm.org/D140612
139 lines
3.3 KiB
C++
139 lines
3.3 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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// basic_string(const basic_string& str, const Allocator& alloc); // constexpr since C++20
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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#include "test_allocator.h"
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#include "min_allocator.h"
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#ifndef TEST_HAS_NO_EXCEPTIONS
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struct alloc_imp {
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bool active;
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TEST_CONSTEXPR alloc_imp() : active(true) {}
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template <class T>
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T* allocate(std::size_t n) {
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if (active)
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return static_cast<T*>(std::malloc(n * sizeof(T)));
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else
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throw std::bad_alloc();
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}
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template <class T>
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void deallocate(T* p, std::size_t) {
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std::free(p);
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}
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void activate() { active = true; }
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void deactivate() { active = false; }
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};
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template <class T>
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struct poca_alloc {
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typedef T value_type;
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typedef std::true_type propagate_on_container_copy_assignment;
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alloc_imp* imp;
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TEST_CONSTEXPR poca_alloc(alloc_imp* imp_) : imp(imp_) {}
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template <class U>
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TEST_CONSTEXPR poca_alloc(const poca_alloc<U>& other) : imp(other.imp) {}
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T* allocate(std::size_t n) { return imp->allocate<T>(n); }
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void deallocate(T* p, std::size_t n) { imp->deallocate(p, n); }
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};
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template <typename T, typename U>
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bool operator==(const poca_alloc<T>& lhs, const poca_alloc<U>& rhs) {
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return lhs.imp == rhs.imp;
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}
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template <typename T, typename U>
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bool operator!=(const poca_alloc<T>& lhs, const poca_alloc<U>& rhs) {
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return lhs.imp != rhs.imp;
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}
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template <class S>
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TEST_CONSTEXPR_CXX20 void test_assign(S& s1, const S& s2) {
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try {
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s1 = s2;
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} catch (std::bad_alloc&) {
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return;
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}
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assert(false);
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}
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#endif
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template <class S>
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TEST_CONSTEXPR_CXX20 void test(S s1, const typename S::allocator_type& a) {
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S s2(s1, a);
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LIBCPP_ASSERT(s2.__invariants());
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assert(s2 == s1);
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assert(s2.capacity() >= s2.size());
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assert(s2.get_allocator() == a);
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}
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TEST_CONSTEXPR_CXX20 bool test() {
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{
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typedef test_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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test(S(), A(3));
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test(S("1"), A(5));
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A(7));
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}
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#if TEST_STD_VER >= 11
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{
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typedef min_allocator<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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test(S(), A());
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test(S("1"), A());
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test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A());
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}
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# ifndef TEST_HAS_NO_EXCEPTIONS
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if (!TEST_IS_CONSTANT_EVALUATED) {
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typedef poca_alloc<char> A;
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typedef std::basic_string<char, std::char_traits<char>, A> S;
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const char* p1 = "This is my first string";
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const char* p2 = "This is my second string";
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alloc_imp imp1;
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alloc_imp imp2;
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S s1(p1, A(&imp1));
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S s2(p2, A(&imp2));
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assert(s1 == p1);
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assert(s2 == p2);
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imp2.deactivate();
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test_assign(s1, s2);
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assert(s1 == p1);
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assert(s2 == p2);
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}
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# endif
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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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