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242 lines
6.4 KiB
C++
242 lines
6.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03
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// <filesystem>
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// class path
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// template <class Source>
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// path& operator=(Source const&);
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// path& operator=(string_type&&);
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// template <class Source>
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// path& assign(Source const&);
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// template <class InputIterator>
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// path& assign(InputIterator first, InputIterator last);
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#include "filesystem_include.hpp"
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#include <type_traits>
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#include <string_view>
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#include <cassert>
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#include "test_macros.h"
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#include "test_iterators.h"
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#include "count_new.hpp"
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#include "filesystem_test_helper.hpp"
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#include <iostream>
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template <class CharT>
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void RunTestCase(MultiStringType const& MS) {
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using namespace fs;
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const char* Expect = MS;
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const CharT* TestPath = MS;
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const CharT* TestPathEnd = StrEnd(TestPath);
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const std::size_t Size = TestPathEnd - TestPath;
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const std::size_t SSize = StrEnd(Expect) - Expect;
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assert(Size == SSize);
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//////////////////////////////////////////////////////////////////////////////
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// basic_string<Char, Traits, Alloc>
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{
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const std::basic_string<CharT> S(TestPath);
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path p; PathReserve(p, S.length() + 1);
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{
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// string provides a contiguous iterator. No allocation needed.
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DisableAllocationGuard g;
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path& pref = (p = S);
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assert(&pref == &p);
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}
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assert(p.native() == Expect);
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assert(p.string<CharT>() == TestPath);
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assert(p.string<CharT>() == S);
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}
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{
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const std::basic_string<CharT> S(TestPath);
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path p; PathReserve(p, S.length() + 1);
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{
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DisableAllocationGuard g;
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path& pref = p.assign(S);
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assert(&pref == &p);
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}
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assert(p.native() == Expect);
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assert(p.string<CharT>() == TestPath);
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assert(p.string<CharT>() == S);
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}
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// basic_string<Char, Traits, Alloc>
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{
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const std::basic_string_view<CharT> S(TestPath);
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path p; PathReserve(p, S.length() + 1);
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{
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// string provides a contiguous iterator. No allocation needed.
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DisableAllocationGuard g;
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path& pref = (p = S);
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assert(&pref == &p);
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}
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assert(p.native() == Expect);
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assert(p.string<CharT>() == TestPath);
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assert(p.string<CharT>() == S);
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}
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{
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const std::basic_string_view<CharT> S(TestPath);
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path p; PathReserve(p, S.length() + 1);
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{
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DisableAllocationGuard g;
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path& pref = p.assign(S);
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assert(&pref == &p);
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}
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assert(p.native() == Expect);
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assert(p.string<CharT>() == TestPath);
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assert(p.string<CharT>() == S);
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}
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//////////////////////////////////////////////////////////////////////////////
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// Char* pointers
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{
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path p; PathReserve(p, Size + 1);
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{
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// char* pointers are contiguous and can be used with code_cvt directly.
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// no allocations needed.
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DisableAllocationGuard g;
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path& pref = (p = TestPath);
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assert(&pref == &p);
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}
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assert(p.native() == Expect);
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assert(p.string<CharT>() == TestPath);
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}
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{
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path p; PathReserve(p, Size + 1);
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{
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DisableAllocationGuard g;
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path& pref = p.assign(TestPath);
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assert(&pref == &p);
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}
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assert(p.native() == Expect);
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assert(p.string<CharT>() == TestPath);
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}
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{
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path p; PathReserve(p, Size + 1);
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{
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DisableAllocationGuard g;
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path& pref = p.assign(TestPath, TestPathEnd);
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assert(&pref == &p);
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}
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assert(p.native() == Expect);
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assert(p.string<CharT>() == TestPath);
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}
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//////////////////////////////////////////////////////////////////////////////
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// Iterators
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{
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using It = input_iterator<const CharT*>;
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path p; PathReserve(p, Size + 1);
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It it(TestPath);
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{
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// Iterators cannot be used with code_cvt directly. This assignment
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// may allocate if it's larger than a "short-string".
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path& pref = (p = it);
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assert(&pref == &p);
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}
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assert(p.native() == Expect);
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assert(p.string<CharT>() == TestPath);
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}
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{
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using It = input_iterator<const CharT*>;
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path p; PathReserve(p, Size + 1);
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It it(TestPath);
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{
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path& pref = p.assign(it);
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assert(&pref == &p);
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}
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assert(p.native() == Expect);
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assert(p.string<CharT>() == TestPath);
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}
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{
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using It = input_iterator<const CharT*>;
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path p; PathReserve(p, Size + 1);
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It it(TestPath);
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It e(TestPathEnd);
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{
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path& pref = p.assign(it, e);
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assert(&pref == &p);
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}
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assert(p.native() == Expect);
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assert(p.string<CharT>() == TestPath);
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}
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}
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template <class It, class = decltype(fs::path{}.assign(std::declval<It>()))>
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constexpr bool has_assign(int) { return true; }
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template <class It>
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constexpr bool has_assign(long) { return false; }
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template <class It>
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constexpr bool has_assign() { return has_assign<It>(0); }
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void test_sfinae() {
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using namespace fs;
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{
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using It = const char* const;
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static_assert(std::is_assignable<path, It>::value, "");
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static_assert(has_assign<It>(), "");
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}
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{
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using It = input_iterator<const char*>;
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static_assert(std::is_assignable<path, It>::value, "");
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static_assert(has_assign<It>(), "");
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}
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{
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struct Traits {
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using iterator_category = std::input_iterator_tag;
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using value_type = const char;
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using pointer = const char*;
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using reference = const char&;
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using difference_type = std::ptrdiff_t;
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};
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using It = input_iterator<const char*, Traits>;
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static_assert(std::is_assignable<path, It>::value, "");
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static_assert(has_assign<It>(), "");
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}
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{
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using It = output_iterator<const char*>;
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static_assert(!std::is_assignable<path, It>::value, "");
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static_assert(!has_assign<It>(), "");
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}
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{
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static_assert(!std::is_assignable<path, int*>::value, "");
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static_assert(!has_assign<int*>(), "");
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}
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}
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void RunStringMoveTest(const char* Expect) {
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using namespace fs;
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std::string ss(Expect);
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path p;
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{
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DisableAllocationGuard g; ((void)g);
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path& pr = (p = std::move(ss));
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assert(&pr == &p);
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}
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assert(p == Expect);
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{
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// Signature test
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ASSERT_NOEXCEPT(p = std::move(ss));
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}
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}
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int main() {
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for (auto const& MS : PathList) {
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RunTestCase<char>(MS);
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RunTestCase<wchar_t>(MS);
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RunTestCase<char16_t>(MS);
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RunTestCase<char32_t>(MS);
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RunStringMoveTest(MS);
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}
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test_sfinae();
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}
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