tdesktop/Telegram/SourceFiles/rpl/producer_tests.cpp

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/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
*/
#include "catch.hpp"
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#include <rpl/producer.h>
#include <rpl/event_stream.h>
using namespace rpl;
class OnDestructor {
public:
OnDestructor(base::lambda_once<void()> callback)
: _callback(std::move(callback)) {
}
~OnDestructor() {
if (_callback) {
_callback();
}
}
private:
base::lambda_once<void()> _callback;
};
TEST_CASE("basic producer tests", "[rpl::producer]") {
SECTION("producer next, done and lifetime end test") {
auto lifetimeEnded = std::make_shared<bool>(false);
auto sum = std::make_shared<int>(0);
auto doneGenerated = std::make_shared<bool>(false);
auto destroyed = std::make_shared<bool>(false);
{
auto destroyCaller = std::make_shared<OnDestructor>([=] {
*destroyed = true;
});
{
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producer<int, no_error>([=](auto &&consumer) {
(void)destroyCaller;
consumer.put_next(1);
consumer.put_next(2);
consumer.put_next(3);
consumer.put_done();
return [=] {
(void)destroyCaller;
*lifetimeEnded = true;
};
}).start([=](int value) {
(void)destroyCaller;
*sum += value;
}, [=](no_error) {
(void)destroyCaller;
}, [=]() {
(void)destroyCaller;
*doneGenerated = true;
});
}
}
REQUIRE(*sum == 1 + 2 + 3);
REQUIRE(*doneGenerated);
REQUIRE(*lifetimeEnded);
REQUIRE(*destroyed);
}
SECTION("producer error test") {
auto errorGenerated = std::make_shared<bool>(false);
{
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producer<no_value, bool>([=](auto &&consumer) {
consumer.put_error(true);
return lifetime();
}).start([=](no_value) {
}, [=](bool error) {
*errorGenerated = error;
}, [=]() {
});
}
REQUIRE(*errorGenerated);
}
SECTION("nested lifetimes test") {
auto lifetimeEndCount = std::make_shared<int>(0);
{
auto lifetimes = lifetime();
{
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auto testProducer = producer<no_value, no_error>([=](auto &&consumer) {
return [=] {
++*lifetimeEndCount;
};
});
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lifetimes.add(testProducer.start_copy([=](no_value) {
}, [=](no_error) {
}, [=] {
}));
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lifetimes.add(std::move(testProducer).start([=](no_value) {
}, [=](no_error) {
}, [=] {
}));
}
REQUIRE(*lifetimeEndCount == 0);
}
REQUIRE(*lifetimeEndCount == 2);
}
SECTION("nested producers test") {
auto sum = std::make_shared<int>(0);
auto lifetimeEndCount = std::make_shared<int>(0);
auto saved = lifetime();
{
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saved = producer<int, no_error>([=](auto &&consumer) {
auto inner = producer<int, no_error>([=](auto &&consumer) {
consumer.put_next(1);
consumer.put_next(2);
consumer.put_next(3);
return [=] {
++*lifetimeEndCount;
};
});
auto result = lifetime([=] {
++*lifetimeEndCount;
});
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result.add(inner.start_copy([=](int value) {
consumer.put_next_copy(value);
}, [=](no_error) {
}, [=] {
}));
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result.add(std::move(inner).start([=](int value) {
consumer.put_next_copy(value);
}, [=](no_error) {
}, [=] {
}));
return result;
}).start([=](int value) {
*sum += value;
}, [=](no_error) {
}, [=] {
});
}
REQUIRE(*sum == 1 + 2 + 3 + 1 + 2 + 3);
REQUIRE(*lifetimeEndCount == 0);
saved.destroy();
REQUIRE(*lifetimeEndCount == 3);
}
SECTION("tuple producer test") {
auto result = std::make_shared<int>(0);
{
producer<std::tuple<int, double>>([=](auto &&consumer) {
consumer.put_next(std::make_tuple(1, 2.));
return lifetime();
}).start([=](int a, double b) {
*result = a + int(b);
}, [=](no_error error) {
}, [=]() {
});
}
REQUIRE(*result == 3);
}
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}
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TEST_CASE("basic event_streams tests", "[rpl::event_stream]") {
SECTION("event_stream basic test") {
auto sum = std::make_shared<int>(0);
event_stream<int> stream;
stream.fire(1);
stream.fire(2);
stream.fire(3);
{
auto lifetime = stream.events().start([=, &stream](int value) {
*sum += value;
}, [=](no_error) {
}, [=] {
});
stream.fire(11);
stream.fire(12);
stream.fire(13);
}
stream.fire(21);
stream.fire(22);
stream.fire(23);
REQUIRE(11 + 12 + 13);
}
SECTION("event_stream add in handler test") {
auto sum = std::make_shared<int>(0);
event_stream<int> stream;
{
auto composite = lifetime();
composite = stream.events().start([=, &stream, &composite](int value) {
*sum += value;
composite.add(stream.events().start([=](int value) {
*sum += value;
}, [=](no_error) {
}, [=] {
}));
}, [=](no_error) {
}, [=] {
});
{
auto inner = lifetime();
inner = stream.events().start([=, &stream, &inner](int value) {
*sum += value;
inner.add(stream.events().start([=](int value) {
*sum += value;
}, [=](no_error) {
}, [=] {
}));
}, [=](no_error) {
}, [=] {
});
stream.fire(1);
stream.fire(2);
stream.fire(3);
}
stream.fire(11);
stream.fire(12);
stream.fire(13);
}
stream.fire(21);
stream.fire(22);
stream.fire(23);
REQUIRE(*sum ==
(1 + 1) +
((2 + 2) + (2 + 2)) +
((3 + 3 + 3) + (3 + 3 + 3)) +
(11 + 11 + 11 + 11) +
(12 + 12 + 12 + 12 + 12) +
(13 + 13 + 13 + 13 + 13 + 13));
}
SECTION("event_stream add and remove in handler test") {
auto sum = std::make_shared<int>(0);
event_stream<int> stream;
{
auto composite = lifetime();
composite = stream.events().start([=, &stream, &composite](int value) {
*sum += value;
composite = stream.events().start([=](int value) {
*sum += value;
}, [=](no_error) {
}, [=] {
});
}, [=](no_error) {
}, [=] {
});
{
auto inner = lifetime();
inner = stream.events().start([=, &stream, &inner](int value) {
*sum += value;
inner = stream.events().start([=](int value) {
*sum += value;
}, [=](no_error) {
}, [=] {
});
}, [=](no_error) {
}, [=] {
});
stream.fire(1);
stream.fire(2);
stream.fire(3);
}
stream.fire(11);
stream.fire(12);
stream.fire(13);
}
stream.fire(21);
stream.fire(22);
stream.fire(23);
REQUIRE(*sum ==
(1 + 1) +
(2 + 2) +
(3 + 3) +
(11) +
(12) +
(13));
}
SECTION("event_stream ends before handler lifetime") {
auto sum = std::make_shared<int>(0);
lifetime extended;
{
event_stream<int> stream;
extended = stream.events().start([=](int value) {
*sum += value;
}, [=](no_error) {
}, [=] {
});
stream.fire(1);
stream.fire(2);
stream.fire(3);
}
REQUIRE(*sum == 1 + 2 + 3);
}
SECTION("event_stream move test") {
auto sum = std::make_shared<int>(0);
lifetime extended;
{
event_stream<int> stream;
stream.events() | on_next([=](int value) {
*sum += value;
}) | start(extended);
stream.fire(1);
stream.fire(2);
auto movedStream = std::move(stream);
movedStream.fire(3);
movedStream.fire(4);
}
REQUIRE(*sum == 1 + 2 + 3 + 4);
}
}
TEST_CASE("basic piping tests", "[rpl::producer]") {
SECTION("bind_on_next, bind_on_error, bind_on_done") {
auto sum = std::make_shared<int>(0);
auto doneGenerated = std::make_shared<bool>(false);
{
auto alive = lifetime();
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producer<int, no_error>([=](auto &&consumer) {
consumer.put_next(1);
consumer.put_next(2);
consumer.put_next(3);
consumer.put_done();
return lifetime();
}) | bind_on_next([=](int value) {
*sum += value;
}) | bind_on_done([=]() {
*doneGenerated = true;
}) | start(alive);
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producer<no_value, int>([=](auto &&consumer) {
consumer.put_error(4);
return lifetime();
}) | bind_on_error([=](int value) {
*sum += value;
}) | bind_on_done([=]() {
*doneGenerated = false;
}) | start(alive);
}
REQUIRE(*sum == 1 + 2 + 3 + 4);
REQUIRE(*doneGenerated);
}
SECTION("on_next, on_error, on_done") {
auto sum = std::make_shared<int>(0);
auto dones = std::make_shared<int>(0);
{
auto alive = lifetime();
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producer<int, int>([=](auto &&consumer) {
consumer.put_next(1);
consumer.put_done();
return lifetime();
}) | on_next([=](int value) {
*sum += value;
}) | start(alive);
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producer<int, int>([=](auto &&consumer) {
consumer.put_next(11);
consumer.put_error(111);
return lifetime();
}) | on_error([=](int value) {
*sum += value;
}) | start(alive);
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producer<int, int>([=](auto &&consumer) {
consumer.put_next(1111);
consumer.put_done();
return lifetime();
}) | on_done([=]() {
*dones += 1;
}) | start(alive);
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producer<int, int>([=](auto &&consumer) {
consumer.put_next(11111);
consumer.put_next(11112);
consumer.put_next(11113);
consumer.put_error(11114);
return lifetime();
}) | on_next([=](int value) {
*sum += value;
}) | on_error([=](int value) {
*sum += value;
}) | start(alive);
}
auto alive = lifetime();
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producer<int, int>([=](auto &&consumer) {
consumer.put_next(111111);
consumer.put_next(111112);
consumer.put_next(111113);
consumer.put_done();
return lifetime();
}) | on_next([=](int value) {
*sum += value;
}) | on_done([=]() {
*dones += 11;
}) | start(alive);
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producer<int, int>([=](auto &&consumer) {
consumer.put_error(1111111);
return lifetime();
}) | on_error([=](int value) {
*sum += value;
}) | on_done([=]() {
*dones = 0;
}) | start(alive);
REQUIRE(*sum ==
1 +
111 +
11111 + 11112 + 11113 + 11114 +
111111 + 111112 + 111113 +
1111111);
REQUIRE(*dones == 1 + 11);
}
SECTION("on_next should copy its callback") {
auto sum = std::make_shared<int>(0);
{
auto next = [=](int value) {
REQUIRE(sum != nullptr);
*sum += value;
};
for (int i = 0; i != 3; ++i) {
auto alive = lifetime();
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producer<int, int>([=](auto &&consumer) {
consumer.put_next(1);
consumer.put_done();
return lifetime();
})
| on_next(next)
| start(alive);
}
}
REQUIRE(*sum == 3);
}
SECTION("rich start calls") {
auto sum = std::make_shared<int>(0);
{
auto alive = lifetime();
producer<int, int>([=](auto &&consumer) {
consumer.put_next(33);
return lifetime();
})
| start([=](int value) {
*sum += value;
}, alive);
producer<no_value, int>([=](auto &&consumer) {
consumer.put_error(33);
return lifetime();
})
| start([](no_value) {
}, [=](int value) {
*sum += value;
}, alive);
producer<int, int>([=](auto &&consumer) {
consumer.put_next(33);
consumer.put_done();
return lifetime();
})
| start([=] {
*sum += 33;
}, alive);
}
REQUIRE(*sum == 99);
}
}