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/*
* This source code is released into the public domain.
*/
#include <coroutine>
#include <ranges>
#include <vector>
#include <catch2/catch_test_macros.hpp>
import nihil;
TEST_CASE("generator: basic", "[generator]")
{
auto fn = [] () -> nihil::generator<int> {
co_yield 1;
co_yield 2;
co_yield 3;
};
auto values = std::vector<int>();
std::ranges::copy(fn(), std::back_inserter(values));
REQUIRE(values == std::vector{1, 2, 3});
}
TEST_CASE("generator: exceptions", "[generator]")
{
auto fn = [] () -> nihil::generator<int> {
co_yield 1;
throw std::runtime_error("test");
};
auto range = fn();
auto it = std::ranges::begin(range);
REQUIRE(*it == 1);
REQUIRE_THROWS_AS(it++, std::runtime_error);
}
TEST_CASE("generator: elements_of", "[generator]")
{
auto fn1 = [] -> nihil::generator<int> {
co_yield 1;
co_yield 2;
co_yield 3;
};
auto fn2 = [&fn1] -> nihil::generator<int> {
co_yield nihil::ranges::elements_of(fn1());
};
auto values = std::vector<int>();
std::ranges::copy(fn2(), std::back_inserter(values));
REQUIRE(values == std::vector{1, 2, 3});
}
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