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‎tests/beman/execution/exec-let.test.cpp‎

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// src/beman/execution/tests/exec-let.test.cpp -*-C++-*-
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include <beman/execution/detail/let.hpp>
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#include <beman/execution/detail/just.hpp>
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#include <beman/execution/detail/get_scheduler.hpp>
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#include <beman/execution/detail/then.hpp>
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#include <beman/execution/detail/read_env.hpp>
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#include <beman/execution/detail/sync_wait.hpp>
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#include <test/execution.hpp>
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#include <array>
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#include <cstdlib>
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#include <concepts>
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#include <memory_resource>
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#include <span>
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#include <vector>
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// ----------------------------------------------------------------------------
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namespace {
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struct receiver {
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using receiver_concept = test_std::receiver_t;
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auto set_error(auto&&) && noexcept -> void {}
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auto set_stopped() && noexcept -> void {}
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auto set_value(auto&&...) && noexcept -> void {}
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};
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template <typename... Sigs>
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struct test_sender {
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using sender_concept = test_std::sender_t;
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using completion_signatures = test_std::completion_signatures<Sigs...>;
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struct state {
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using operation_state_concept = test_std::operation_state_t;
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auto start() & noexcept -> void {}
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};
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auto connect(auto&&) -> state { return {}; }
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};
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auto test_let_value() {
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auto s0{test_std::let_value(test_std::just(), [] { return test_std::just() | test_std::then([] {}); })};
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auto s1{test_std::just() | test_std::let_value([] { return test_std::just(); })};
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static_assert(test_std::sender<decltype(s0)>);
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static_assert(test_std::sender<decltype(s1)>);
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static_assert(test_std::sender<test_sender<test_std::set_value_t()>>);
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static_assert(test_std::operation_state<test_sender<test_std::set_value_t()>::state>);
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auto s2{test_sender<test_std::set_value_t(),
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test_std::set_value_t(int),
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test_std::set_value_t(int&),
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test_std::set_error_t(int),
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test_std::set_stopped_t()>() |
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test_std::let_value([]<typename... A>(A&&...) {
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return test_sender<test_std::set_value_t(bool),
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test_std::set_value_t(double, A...),
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test_std::set_error_t(char)>();
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})};
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static_assert(test_std::sender<decltype(s2)>);
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using type = decltype(test_std::get_completion_signatures(s2, test_std::empty_env{}));
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static_assert(std::same_as<type, type>);
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// static_assert(std::same_as<void, type>);
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auto state2{test_std::connect(s2, receiver{})};
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test::use(state2);
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test_std::start(state2);
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auto state0{test_std::connect(s0, receiver{})};
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test::use(state0);
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test_std::start(state0);
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auto state1{test_std::connect(s1, receiver{})};
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test::use(state1);
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test_std::start(state1);
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}
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template <std::size_t Size>
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struct inline_resource : std::pmr::memory_resource {
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std::array<std::byte, Size> buffer;
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std::byte* next{+this->buffer};
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void* do_allocate(std::size_t size, std::size_t) override {
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if (size <= std::size_t(std::distance(next, std::end(buffer)))) {
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std::byte* rc{this->next};
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this->next += size;
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return rc;
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}
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return nullptr;
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}
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void do_deallocate(void*, std::size_t, std::size_t) override {}
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bool do_is_equal(const std::pmr::memory_resource& other) const noexcept override { return this == &other; }
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};
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namespace ex = test_std;
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struct fun {
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std::pmr::polymorphic_allocator<> allocator{};
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fun() {}
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explicit fun(std::pmr::polymorphic_allocator<> alloc) : allocator(alloc) {}
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auto operator()(std::span<int> s) noexcept {
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return ex::just(std::pmr::vector<int>(s.begin(), s.end(), this->allocator));
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}
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};
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auto test_let_value_allocator() -> void {
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std::vector<int> values{1, 2, 3};
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auto s{ex::just(std::span(values)) | ex::let_value(fun()) | ex::then([](auto&&) noexcept {})};
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static_assert(test_std::sender<decltype(s)>);
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static_assert(test_std::sender_in<decltype(s)>);
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// static_assert(std::same_as<void, decltype(test_std::get_completion_signatures(s, test_std::empty_env{}))>);
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ex::sync_wait(s);
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}
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auto test_let_value_env() -> void {
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ex::sync_wait(
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ex::just()
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| ex::let_value([]{ return ex::read_env(ex::get_scheduler); })
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| ex::then([](auto s){ static_assert(ex::scheduler<decltype(s)>); })
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);
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}
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} // namespace
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// ----------------------------------------------------------------------------
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TEST(exec_let) {
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static_assert(std::same_as<const test_std::let_error_t, decltype(test_std::let_error)>);
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static_assert(std::same_as<const test_std::let_stopped_t, decltype(test_std::let_stopped)>);
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static_assert(std::same_as<const test_std::let_value_t, decltype(test_std::let_value)>);
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try {
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test_let_value();
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test_let_value_allocator();
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test_let_value_env();
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} catch (...) {
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// NOLINTBEGIN(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
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ASSERT(nullptr == "let tests are not expected to throw");
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// NOLINTEND(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
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}
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return EXIT_SUCCESS;
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}
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// src/beman/execution/tests/exec-let.test.cpp -*-C++-*-
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include <beman/execution/detail/let.hpp>
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#include <beman/execution/detail/just.hpp>
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#include <beman/execution/detail/get_scheduler.hpp>
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#include <beman/execution/detail/then.hpp>
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#include <beman/execution/detail/read_env.hpp>
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#include <beman/execution/detail/sync_wait.hpp>
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#include <test/execution.hpp>
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#include <array>
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#include <cstdlib>
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#include <concepts>
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#include <memory_resource>
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#include <span>
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#include <vector>
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// ----------------------------------------------------------------------------
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namespace {
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struct receiver {
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using receiver_concept = test_std::receiver_t;
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auto set_error(auto&&) && noexcept -> void {}
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auto set_stopped() && noexcept -> void {}
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auto set_value(auto&&...) && noexcept -> void {}
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};
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template <typename... Sigs>
28+
struct test_sender {
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using sender_concept = test_std::sender_t;
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using completion_signatures = test_std::completion_signatures<Sigs...>;
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32+
struct state {
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using operation_state_concept = test_std::operation_state_t;
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auto start() & noexcept -> void {}
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};
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auto connect(auto&&) -> state { return {}; }
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};
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auto test_let_value() {
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auto s0{test_std::let_value(test_std::just(), [] { return test_std::just() | test_std::then([] {}); })};
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auto s1{test_std::just() | test_std::let_value([] { return test_std::just(); })};
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static_assert(test_std::sender<decltype(s0)>);
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static_assert(test_std::sender<decltype(s1)>);
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static_assert(test_std::sender<test_sender<test_std::set_value_t()>>);
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static_assert(test_std::operation_state<test_sender<test_std::set_value_t()>::state>);
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auto s2{test_sender<test_std::set_value_t(),
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test_std::set_value_t(int),
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test_std::set_value_t(int&),
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test_std::set_error_t(int),
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test_std::set_stopped_t()>() |
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test_std::let_value([]<typename... A>(A&&...) {
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return test_sender<test_std::set_value_t(bool),
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test_std::set_value_t(double, A...),
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test_std::set_error_t(char)>();
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})};
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static_assert(test_std::sender<decltype(s2)>);
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using type = decltype(test_std::get_completion_signatures(s2, test_std::empty_env{}));
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static_assert(std::same_as<type, type>);
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// static_assert(std::same_as<void, type>);
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auto state2{test_std::connect(s2, receiver{})};
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test::use(state2);
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test_std::start(state2);
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auto state0{test_std::connect(s0, receiver{})};
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test::use(state0);
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test_std::start(state0);
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auto state1{test_std::connect(s1, receiver{})};
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test::use(state1);
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test_std::start(state1);
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}
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template <std::size_t Size>
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struct inline_resource : std::pmr::memory_resource {
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std::array<std::byte, Size> buffer;
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std::byte* next{+this->buffer};
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void* do_allocate(std::size_t size, std::size_t) override {
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if (size <= std::size_t(std::distance(next, std::end(buffer)))) {
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std::byte* rc{this->next};
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this->next += size;
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return rc;
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}
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return nullptr;
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}
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void do_deallocate(void*, std::size_t, std::size_t) override {}
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bool do_is_equal(const std::pmr::memory_resource& other) const noexcept override { return this == &other; }
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};
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namespace ex = test_std;
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struct fun {
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std::pmr::polymorphic_allocator<> allocator{};
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fun() {}
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explicit fun(std::pmr::polymorphic_allocator<> alloc) : allocator(alloc) {}
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auto operator()(std::span<int> s) noexcept {
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return ex::just(std::pmr::vector<int>(s.begin(), s.end(), this->allocator));
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}
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};
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auto test_let_value_allocator() -> void {
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std::vector<int> values{1, 2, 3};
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auto s{ex::just(std::span(values)) | ex::let_value(fun()) | ex::then([](auto&&) noexcept {})};
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static_assert(test_std::sender<decltype(s)>);
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static_assert(test_std::sender_in<decltype(s)>);
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// static_assert(std::same_as<void, decltype(test_std::get_completion_signatures(s, test_std::empty_env{}))>);
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ex::sync_wait(s);
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}
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auto test_let_value_env() -> void {
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ex::sync_wait(
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ex::just()
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| ex::let_value([]{ return ex::read_env(ex::get_scheduler); })
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| ex::then([](auto s){ static_assert(ex::scheduler<decltype(s)>); })
116+
);
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}
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} // namespace
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// ----------------------------------------------------------------------------
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TEST(exec_let) {
123+
static_assert(std::same_as<const test_std::let_error_t, decltype(test_std::let_error)>);
124+
static_assert(std::same_as<const test_std::let_stopped_t, decltype(test_std::let_stopped)>);
125+
static_assert(std::same_as<const test_std::let_value_t, decltype(test_std::let_value)>);
126+
127+
try {
128+
test_let_value();
129+
test_let_value_allocator();
130+
test_let_value_env();
131+
} catch (...) {
132+
// NOLINTBEGIN(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
133+
ASSERT(nullptr == "let tests are not expected to throw");
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// NOLINTEND(cert-dcl03-c,hicpp-static-assert,misc-static-assert)
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}
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return EXIT_SUCCESS;
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}

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