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promise-test.cpp
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promise-test.cpp
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/*
* This file is part of libkazv.
* SPDX-FileCopyrightText: 2021 Tusooa Zhu <tusooa@kazv.moe>
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#include <catch2/catch_all.hpp>
#include <asio-promise-handler.hpp>
#include <context.hpp>
using namespace Kazv;
struct MockDataStruct
{
int i{};
};
TEST_CASE("Promise should behave properly", "[promise]")
{
boost::asio::io_context ioContext;
auto ph = AsioPromiseHandler(ioContext.get_executor());
std::vector<int> v;
auto p1 = ph.create<int>([&v](auto resolve) {
v.push_back(1);
resolve(2);
});
auto p2 = p1.then([&v, &ph](int val) {
v.push_back(val);
return ph.createResolved(3);
});
auto p3 = p2.then([&v, &ph](int val) {
v.push_back(val);
return ph.createResolved(-1);
});
auto p4 = p3.then([](int val) {
REQUIRE(val == -1);
return 5;
});
auto p5 = p4.then([](int val) {
REQUIRE(val == 5);
return MockDataStruct{6};
});
auto p6 = p5.then([](MockDataStruct m) {
REQUIRE(m.i == 6);
return 0;
});
auto pTimer = ph.create<int>([&ioContext](auto resolve) {
auto timer = std::make_shared<boost::asio::steady_timer>(ioContext);
timer->expires_after(std::chrono::milliseconds(300));
timer->async_wait(
[timer, resolve](const boost::system::error_code& error) {
if (! error) {
resolve(20);
}
});
});
auto pTimer2 = pTimer.then([](int val) {
REQUIRE(val == 20);
return 0;
});
ioContext.run();
REQUIRE(v == std::vector<int>{ 1, 2, 3 });
}
TEST_CASE("BoolPromise should behave properly", "[promise]")
{
boost::asio::io_context ioContext;
auto ph = BoolPromiseInterface(AsioPromiseHandler(ioContext.get_executor()));
auto p1 = ph.create([](auto resolve) {
resolve(true);
});
auto p2 = p1.then([](bool v) {
REQUIRE(v == true);
});
auto p3 = p2.then([&](bool v) {
REQUIRE(v == true);
return ph.createResolved(false);
});
auto p4 = p3.then([](bool v) {
REQUIRE(v == false);
});
ioContext.run();
}
TEST_CASE("EffectStatus should combine properly with .all()", "[promise][store]")
{
boost::asio::io_context ioContext;
using PH = SingleTypePromiseInterface<EffectStatus>;
using PromiseT = typename PH::PromiseT;
auto ph = PH(AsioPromiseHandler(ioContext.get_executor()));
auto e1 = EffectStatus(true, json{{"foo", "bar"}});
auto e2 = EffectStatus(true, json{{"foo2", "bar2"}});
auto e3 = EffectStatus(false, json{{"foo3", "bar3"}});
auto p1 = ph.createResolved(e1);
auto p2 = ph.createResolved(e2);
auto p3 = ph.createResolved(e3);
SECTION(".all(singlePromise) should give the Promise as-is") {
ph.all(std::vector<PromiseT>{p1})
.then([](auto e) {
REQUIRE(e.success());
REQUIRE(e.dataStr("foo") == "bar");
});
}
SECTION(".all(multiplePromises) should give out the data"
" as an array and compute successfulness using &&") {
ph.all(std::vector<PromiseT>{p2, p3, p1})
.then([](auto e) {
REQUIRE(! e.success());
REQUIRE(e.dataStr(0, "foo2") == "bar2");
REQUIRE(e.dataStr(1, "foo3") == "bar3");
REQUIRE(e.dataStr(2, "foo") == "bar");
});
}
ioContext.run();
}

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