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[libc++] Add missing CPO tests for range adaptors (#149557)

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Co-authored-by: A. Jiang <de34@live.cn>
This commit is contained in:
Louis Dionne 2025-07-25 13:29:48 -04:00 committed by GitHub
parent 6cbcfb9a7c
commit 1d0aa5f6b2
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1 changed files with 35 additions and 6 deletions
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41
libcxx/test/std/library/description/conventions/customization.point.object/cpo.compile.pass.cpp
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@ -15,6 +15,7 @@
#include <concepts>
#include <iterator>
#include <ranges>
#include <sstream>
#include <type_traits>
#include <utility>
@ -45,7 +46,10 @@ constexpr bool test(CPO& o, Args&&...) {
int a[10];
int arrays[10][10];
//std::pair<int, int> pairs[10];
std::pair<int, int> pairs[10];
#ifndef TEST_HAS_NO_LOCALIZATION
std::istringstream stream;
#endif
// [concept.swappable]
static_assert(test(std::ranges::swap, a, a));
@ -81,25 +85,50 @@ static_assert(test(std::ranges::ssize, a));
// views::empty<T> is not a CPO
static_assert(test(std::views::iota, 1));
static_assert(test(std::views::iota, 1, 10));
//static_assert(test(std::views::istream<int>, 1);
#ifndef TEST_HAS_NO_LOCALIZATION
static_assert(test(std::views::istream<int>, stream));
#endif
static_assert(test(std::views::single, 4));
#if TEST_STD_VER >= 23
static_assert(test(std::views::repeat, 1));
#endif
// [range.adaptors]
static_assert(test(std::views::all, a));
static_assert(test(std::views::common, a));
static_assert(test(std::views::counted, a, 10));
static_assert(test(std::views::drop, a, 10));
//static_assert(test(std::views::drop_while, a, [](int x){ return x < 10; }));
//static_assert(test(std::views::elements<0>, pairs));
static_assert(test(std::views::drop_while, a, [](int x) { return x < 10; }));
static_assert(test(std::views::elements<0>, pairs));
static_assert(test(std::views::filter, a, [](int x) { return x < 10; }));
static_assert(test(std::views::join, arrays));
//static_assert(test(std::views::split, a, 4));
static_assert(test(std::views::keys, pairs));
static_assert(test(std::views::lazy_split, a, 4));
static_assert(test(std::views::reverse, a));
static_assert(test(std::views::split, a, 4));
static_assert(test(std::views::take, a, 10));
//static_assert(test(std::views::take_while, a, [](int x){ return x < 10; }));
static_assert(test(std::views::take_while, a, [](int x) { return x < 10; }));
static_assert(test(std::views::transform, a, [](int x) { return x + 1; }));
static_assert(test(std::views::values, pairs));
#if TEST_STD_VER >= 23
// static_assert(test(std::views::adjacent_transform<2>, [](int x, int y) { return x + y; }, a));
// static_assert(test(std::views::adjacent<2>, a));
// static_assert(test(std::views::as_const, a));
static_assert(test(std::views::as_rvalue, a));
// static_assert(test(std::views::cartesian_product, a, a, a));
static_assert(test(std::views::chunk_by, a, [](int x, int y) { return x < y; }));
// static_assert(test(std::views::chunk, a, 1));
// static_assert(test(std::views::enumerate, a));
static_assert(test(std::views::join_with, 1));
// static_assert(test(std::views::stride, a, 1));
static_assert(test(std::views::zip_transform, [](int x, int y) { return x + y; }, a, a));
static_assert(test(std::views::zip, a, a));
#endif
#if TEST_STD_VER >= 26
// static_assert(test(std::views::cache_latest, a));
// static_assert(test(std::views::concat, a, a));
// static_assert(test(std::views::to_input, a));
#endif