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/******************************************************************************
* ____ _ _____ *
* / ___| / \ | ___| C++ *
* | | / _ \ | |_ Actor *
* | |___ / ___ \| _| Framework *
* \____/_/ \_|_| *
* *
* Copyright 2011-2018 Dominik Charousset *
* *
* Distributed under the terms and conditions of the BSD 3-Clause License or *
* (at your option) under the terms and conditions of the Boost Software *
* License 1.0. See accompanying files LICENSE and LICENSE_ALTERNATIVE. *
* *
* If you did not receive a copy of the license files, see *
* http://opensource.org/licenses/BSD-3-Clause and *
* http://www.boost.org/LICENSE_1_0.txt. *
******************************************************************************/
#define CAF_SUITE mixin.requester
#include "caf/mixin/requester.hpp"
#include "caf/test/dsl.hpp"
#include "caf/event_based_actor.hpp"
using namespace caf;
namespace {
using discarding_server_type = typed_actor<replies_to<int, int>::with<void>>;
using adding_server_type = typed_actor<replies_to<int, int>::with<int>>;
using result_type = variant<none_t, unit_t, int>;
struct fixture : test_coordinator_fixture<> {
fixture() {
result = std::make_shared<result_type>(none);
discarding_server = make_server([](int, int) {});
adding_server = make_server([](int x, int y) { return x + y; });
run();
}
template <class F>
auto make_server(F f)
-> typed_actor<replies_to<int, int>::with<decltype(f(1, 2))>> {
using impl = typed_actor<replies_to<int, int>::with<decltype(f(1, 2))>>;
auto init = [f]() -> typename impl::behavior_type {
return {
[f](int x, int y) { return f(x, y); },
};
};
return sys.spawn(init);
}
template <class T>
T make_delegator(T dest) {
auto f = [=](typename T::pointer self) -> typename T::behavior_type {
return {
[=](int x, int y) { return self->delegate(dest, x, y); },
};
};
return sys.spawn<lazy_init>(f);
}
std::shared_ptr<result_type> result = std::make_shared<result_type>(none);
discarding_server_type discarding_server;
adding_server_type adding_server;
};
} // namespace
#define ERROR_HANDLER [&](error& err) { CAF_FAIL(sys.render(err)); }
#define SUBTEST(message) \
*result = none; \
run(); \
CAF_MESSAGE("subtest: " message); \
for (int subtest_dummy = 0; subtest_dummy < 1; ++subtest_dummy)
CAF_TEST_FIXTURE_SCOPE(requester_tests, fixture)
CAF_TEST(requests without result) {
auto server = discarding_server;
SUBTEST("request.then") {
auto client = sys.spawn([=](event_based_actor* self) {
self->request(server, infinite, 1, 2).then([=] { *result = unit; });
});
run_once();
expect((int, int), from(client).to(server).with(1, 2));
expect((void), from(server).to(client));
CAF_CHECK_EQUAL(*result, unit);
}
SUBTEST("request.await") {
auto client = sys.spawn([=](event_based_actor* self) {
self->request(server, infinite, 1, 2).await([=] { *result = unit; });
});
run_once();
expect((int, int), from(client).to(server).with(1, 2));
expect((void), from(server).to(client));
CAF_CHECK_EQUAL(*result, unit);
}
SUBTEST("request.receive") {
auto res_hdl = self->request(server, infinite, 1, 2);
run();
res_hdl.receive([&] { *result = unit; }, ERROR_HANDLER);
CAF_CHECK_EQUAL(*result, unit);
}
}
CAF_TEST(requests with integer result) {
auto server = adding_server;
SUBTEST("request.then") {
auto client = sys.spawn([=](event_based_actor* self) {
self->request(server, infinite, 1, 2).then([=](int x) { *result = x; });
});
run_once();
expect((int, int), from(client).to(server).with(1, 2));
expect((int), from(server).to(client).with(3));
CAF_CHECK_EQUAL(*result, 3);
}
SUBTEST("request.await") {
auto client = sys.spawn([=](event_based_actor* self) {
self->request(server, infinite, 1, 2).await([=](int x) { *result = x; });
});
run_once();
expect((int, int), from(client).to(server).with(1, 2));
expect((int), from(server).to(client).with(3));
CAF_CHECK_EQUAL(*result, 3);
}
SUBTEST("request.receive") {
auto res_hdl = self->request(server, infinite, 1, 2);
run();
res_hdl.receive([&](int x) { *result = x; }, ERROR_HANDLER);
CAF_CHECK_EQUAL(*result, 3);
}
}
CAF_TEST(delegated request with integer result) {
auto worker = adding_server;
auto server = make_delegator(worker);
auto client = sys.spawn([=](event_based_actor* self) {
self->request(server, infinite, 1, 2).then([=](int x) { *result = x; });
});
run_once();
expect((int, int), from(client).to(server).with(1, 2));
expect((int, int), from(client).to(worker).with(1, 2));
expect((int), from(worker).to(client).with(3));
CAF_CHECK_EQUAL(*result, 3);
}
#ifndef CAF_NO_EXCEPTIONS
CAF_TEST(exceptions while processing requests trigger error messages) {
auto worker = sys.spawn([] {
return behavior{
[](int) { throw std::runtime_error(""); },
};
});
run();
auto client = sys.spawn([worker](event_based_actor* self) {
self->request(worker, infinite, 42).then([](int) {
CAF_FAIL("unexpected handler called");
});
});
run_once();
expect((int), from(client).to(worker).with(42));
expect((error), from(worker).to(client).with(sec::runtime_error));
}
#endif // CAF_NO_EXCEPTIONS
CAF_TEST_FIXTURE_SCOPE_END()
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