cpp.react/tests/src/TransactionTest.h at master · SymmetryLabs/cpp.react · GitHub

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// Copyright Sebastian Jeckel 2014.

// Distributed under the Boost Software License, Version 1.0.

// (See accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

#pragma once

#include "gtest/gtest.h"

#include <algorithm>

#include <thread>

#include <vector>

#include "react/Domain.h"

#include "react/Signal.h"

#include "react/Event.h"

#include "react/Observer.h"

#include "react/Algorithm.h"

///////////////////////////////////////////////////////////////////////////////////////////////////

namespace {

using namespace react;

///////////////////////////////////////////////////////////////////////////////////////////////////

/// SignalTest fixture

///////////////////////////////////////////////////////////////////////////////////////////////////

template <typename TParams>

class TransactionTest : public testing::Test

{

public:

template <EPropagationMode mode>

class MyEngine : public TParams::template EngineT<mode> {};

REACTIVE_DOMAIN(MyDomain, TParams::mode, MyEngine)

};

TYPED_TEST_CASE_P(TransactionTest);

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Concurrent transactions test 1

///////////////////////////////////////////////////////////////////////////////////////////////////

TYPED_TEST_P(TransactionTest, Concurrent1)

{

using D = typename Concurrent1::MyDomain;

std::vector<int> results;

auto n1 = MakeVar<D>(1);

auto n2 = n1 + 1;

auto n3 = n2 + n1 + 1;

auto n4 = n3 + 1;

auto n5 = n4 + n3 + n1 + 1;

auto n6 = n5 + 1;

auto n7 = n6 + n5 + 1;

auto n8 = n7 + 1;

auto n9 = n8 + n7 + n5 + n1 + 1;

auto n10 = n9 + 1;

auto n11 = n10 + n9 + 1;

auto n12 = n11 + 1;

auto n13 = n12 + n11 + n9 + 1;

auto n14 = n13 + 1;

auto n15 = n14 + n13 + 1;

auto n16 = n15 + 1;

auto n17 = n16 + n15 + n13 + n9 + 1;

Observe(n17, [&] (int v)

{

results.push_back(v);

});

n1 <<= 10; // 7732

n1 <<= 100; // 68572

n1 <<= 1000; // 676972

ASSERT_EQ(results.size(), 3);

ASSERT_TRUE(std::find(results.begin(), results.end(), 7732) != results.end());

ASSERT_TRUE(std::find(results.begin(), results.end(), 68572) != results.end());

ASSERT_TRUE(std::find(results.begin(), results.end(), 676972) != results.end());

// Reset

n1 <<= 1;

results.clear();

// Now do the same from 3 threads

std::thread t1([&] { n1 <<= 10; });

std::thread t2([&] { n1 <<= 100; });

std::thread t3([&] { n1 <<= 1000; });

t1.join();

t2.join();

t3.join();

ASSERT_EQ(results.size(), 3);

ASSERT_TRUE(std::find(results.begin(), results.end(), 7732) != results.end());

ASSERT_TRUE(std::find(results.begin(), results.end(), 68572) != results.end());

ASSERT_TRUE(std::find(results.begin(), results.end(), 676972) != results.end());

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Concurrent transactions test 2

///////////////////////////////////////////////////////////////////////////////////////////////////

TYPED_TEST_P(TransactionTest, Concurrent2)

{

using D = typename Concurrent2::MyDomain;

std::vector<int> results;

auto in = MakeVar<D>(-1);

// 1. Generate graph

Signal<D,int> n0 = in;

auto next = n0;

for (int i=0; i < 100; i++)

{

auto q = next + 0;

next = q;

}

Observe(next, [&] (int v)

{

results.push_back(v);

});

// 2. Send events

std::thread t1([&]

{

for (int i=0; i<100; i++)

{

std::this_thread::sleep_for(std::chrono::milliseconds(rand() % 50));

in <<= i;

}

});

std::thread t2([&]

{

for (int i=100; i<200; i++)

{

std::this_thread::sleep_for(std::chrono::milliseconds(rand() % 50));

in <<= i;

}

});

std::thread t3([&]

{

for (int i=200; i<300; i++)

{

std::this_thread::sleep_for(std::chrono::milliseconds(rand() % 50));

in <<= i;

}

});

t1.join();

t2.join();

t3.join();

ASSERT_EQ(results.size(), 300);

for (int i=0; i<300; i++)

{

ASSERT_TRUE(std::find(results.begin(), results.end(), i) != results.end());

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Concurrent transactions test 3

///////////////////////////////////////////////////////////////////////////////////////////////////

TYPED_TEST_P(TransactionTest, Concurrent3)

{

using D = typename Concurrent3::MyDomain;

std::vector<int> results;

std::function<int(int)> f_0 = [] (int a) -> int

{

for (int i = 0; i<(a+1)*100; i++);

return a + 1;

};

std::function<int(int,int)> f_n = [] (int a, int b) -> int

{

for (int i = 0; i<(a+b)*100; i++);

return a + b;

};

auto n1 = MakeVar<D>(1);

auto n2 = n1 ->* f_0;

auto n3 = ((n2, n1) ->* f_n) ->* f_0;

auto n4 = n3 ->* f_0;

auto n5 = ((((n4, n3) ->* f_n), n1) ->* f_n) ->* f_0;

auto n6 = n5 ->* f_0;

auto n7 = ((n6, n5) ->* f_n) ->* f_0;

auto n8 = n7 ->* f_0;

auto n9 = ((((((n8, n7) ->* f_n), n5) ->* f_n), n1) ->* f_n) ->* f_0;

auto n10 = n9 ->* f_0;

auto n11 = ((n10, n9) ->* f_n) ->* f_0;

auto n12 = n11 ->* f_0;

auto n13 = ((((n12, n11) ->* f_n), n9) ->* f_n) ->* f_0;

auto n14 = n13 ->* f_0;

auto n15 = ((n14, n13) ->* f_n) ->* f_0;

auto n16 = n15 ->* f_0;

auto n17 = ((((((n16, n15) ->* f_n), n13) ->* f_n), n9) ->* f_n) ->* f_0;

Observe(n17, [&] (int v)

{

results.push_back(v);

});

n1 <<= 1000; // 676972

n1 <<= 100; // 68572

n1 <<= 10; // 7732

ASSERT_EQ(results.size(), 3);

ASSERT_TRUE(std::find(results.begin(), results.end(), 7732) != results.end());

ASSERT_TRUE(std::find(results.begin(), results.end(), 68572) != results.end());

ASSERT_TRUE(std::find(results.begin(), results.end(), 676972) != results.end());

// Reset

n1 <<= 1;

results.clear();

std::thread t3([&] { n1 <<= 1000; });

std::thread t2([&] { n1 <<= 100; });

std::thread t1([&] { n1 <<= 10; });

t3.join();

t2.join();

t1.join();

ASSERT_EQ(results.size(), 3);

ASSERT_TRUE(std::find(results.begin(), results.end(), 7732) != results.end());

ASSERT_TRUE(std::find(results.begin(), results.end(), 68572) != results.end());

ASSERT_TRUE(std::find(results.begin(), results.end(), 676972) != results.end());

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Merging1

///////////////////////////////////////////////////////////////////////////////////////////////////

TYPED_TEST_P(TransactionTest, Merging1)

{

using D = typename Merging1::MyDomain;

std::vector<int> results;

std::atomic<bool> shouldSpin(false);

std::function<int(int)> f = [&shouldSpin] (int a) -> int

{

while (shouldSpin);

return a;

};

auto n1 = MakeVar<D>(1);

auto n2 = n1 ->* f;

Observe(n2, [&] (int v) {

results.push_back(v);

});

// Todo: improve this as it'll fail occasionally

shouldSpin = true;

std::thread t1([&] {

DoTransaction<D>(allow_merging, [&] {

n1 <<= 2;

});

std::this_thread::sleep_for(std::chrono::milliseconds(2000));

std::thread t2([&] {

DoTransaction<D>(allow_merging, [&] {

n1 <<= 3;

});

std::this_thread::sleep_for(std::chrono::milliseconds(1000));

std::thread t3([&] {

DoTransaction<D>(allow_merging, [&] {

n1 <<= 4;

});

std::this_thread::sleep_for(std::chrono::milliseconds(1000));

std::thread t4([&] {

DoTransaction<D>(allow_merging, [&] {

n1 <<= 5;

});

std::this_thread::sleep_for(std::chrono::milliseconds(1000));

shouldSpin = false;

t1.join();

t2.join();

t3.join();

t4.join();

ASSERT_EQ(results.size(), 2);

ASSERT_TRUE(results[0] == 2);

ASSERT_TRUE(results[1] == 5);

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Async1

///////////////////////////////////////////////////////////////////////////////////////////////////

TYPED_TEST_P(TransactionTest, Async1)

{

using D = typename Async1::MyDomain;

std::vector<int> results;

auto in = MakeVar<D>(1);

auto s1 = in * 1000;

Observe(s1, [&] (int v) {

results.push_back(v);

});

TransactionStatus st;

AsyncTransaction<D>(st, [&] {

in <<= 10;

});

AsyncTransaction<D>(st, [&] {

in <<= 20;

});

AsyncTransaction<D>(st, [&] {

in <<= 30;

});

st.Wait();

ASSERT_EQ(results.size(), 3);

ASSERT_TRUE(results[0] == 10000);

ASSERT_TRUE(results[1] == 20000);

ASSERT_TRUE(results[2] == 30000);

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// AsyncMerging1

///////////////////////////////////////////////////////////////////////////////////////////////////

TYPED_TEST_P(TransactionTest, AsyncMerging1)

{

using D = typename AsyncMerging1::MyDomain;

std::vector<int> results;

auto in = MakeVar<D>(1);

auto s1 = in * 1000;

Observe(s1, [&] (int v) {

results.push_back(v);

});

TransactionStatus st;

AsyncTransaction<D>(allow_merging, st, [&] {

std::this_thread::sleep_for(std::chrono::milliseconds(1000));

in <<= 10;

});

// Make sure other async transaction gets to start

std::this_thread::sleep_for(std::chrono::milliseconds(10));

// These two can still be pulled in after the first input function is done

AsyncTransaction<D>(allow_merging, st, [&] {

in <<= 20;

});

AsyncTransaction<D>(allow_merging, st, [&] {

in <<= 30;

});

// Can't be merged

AsyncTransaction<D>(st, [&] {

in <<= 40;

});

// These two should be merged again

AsyncTransaction<D>(allow_merging, st, [&] {

in <<= 50;

});

AsyncTransaction<D>(allow_merging, st, [&] {

in <<= 60;

});

st.Wait();

ASSERT_EQ(results.size(), 3);

ASSERT_TRUE(results[0] == 30000);

ASSERT_TRUE(results[1] == 40000);

ASSERT_TRUE(results[2] == 60000);

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Continuation1

///////////////////////////////////////////////////////////////////////////////////////////////////

TYPED_TEST_P(TransactionTest, Continuation1)

{

using D = typename Continuation1::MyDomain;

std::vector<int> results;

auto in = MakeVar<D>(0);

auto cont = MakeContinuation(in, [&] (int v) {

results.push_back(v);

if (v < 10)

in <<= v + 1;

});

in <<= 1;

ASSERT_EQ(results.size(), 10);

for (int i=0; i<10; i++)

ASSERT_TRUE(results[i] == i+1);

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Continuation2

///////////////////////////////////////////////////////////////////////////////////////////////////

TYPED_TEST_P(TransactionTest, Continuation2)

{

using L = typename Continuation2::MyDomain;

REACTIVE_DOMAIN(R, sequential_concurrent)

std::vector<int> results;

auto srcL = MakeVar<L>(0);

auto srcR = MakeVar<R>(0);

auto contL = MakeContinuation<L,R>(srcL, [&] (int v) {

results.push_back(v);

if (v < 10)

srcR <<= v+1;

});

auto contR = MakeContinuation<R,L>(Monitor(srcR), [&] (int v) {

results.push_back(v);

if (v < 10)

srcL <<= v+1;

});

srcL <<= 1;

ASSERT_EQ(results.size(), 10);

for (int i=0; i<10; i++)

ASSERT_TRUE(results[i] == i+1);

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Continuation3

///////////////////////////////////////////////////////////////////////////////////////////////////

TYPED_TEST_P(TransactionTest, Continuation3)

{

using L = typename Continuation3::MyDomain;

REACTIVE_DOMAIN(R, sequential_concurrent)

std::vector<int> results;

auto srcL = MakeVar<L>(0);

auto depL1 = MakeVar<L>(100);

auto depL2 = MakeVar<L>(10);

auto srcR = MakeVar<R>(0);

auto contL = MakeContinuation<L,R>(

Monitor(srcL),

With(depL1, depL2),

[&] (int v, int depL1, int depL2) {

ASSERT_EQ(depL1, v*100);

ASSERT_EQ(depL2, v*10);

results.push_back(v);

if (v < 10)

srcR <<= v+1;

});

auto contR = MakeContinuation<R,L>(

Monitor(srcR),

[&] (int v) {

results.push_back(v);

v++;

depL1 <<= v*100;

depL2 <<= v*10;

if (v < 10)

srcL <<= v;

});

srcL <<= 1;

ASSERT_EQ(results.size(), 10);

for (int i=0; i<10; i++)

ASSERT_TRUE(results[i] == i+1);

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Continuation4 test

///////////////////////////////////////////////////////////////////////////////////////////////////

TYPED_TEST_P(TransactionTest, Continuation4)

{

using D = typename Continuation4::MyDomain;

using std::vector;

auto vect = MakeVar<D>(vector<int>{});

int count = 0;

auto cont = MakeContinuation(vect, [&] (const vector<int>& v)

{

if (count == 0)

{

ASSERT_EQ(v[0], 30);

vect.Modify([] (vector<int>& v) {

v.push_back(50);

});

}

else if (count == 1)

{

ASSERT_EQ(v[1], 50);

vect.Modify([] (vector<int>& v) {

v.push_back(70);

});

}

else

{

ASSERT_EQ(v[2], 70);

}

count++;

});

vect.Modify([] (vector<int>& v) {

v.push_back(30);

});

ASSERT_EQ(count, 3);

}

///////////////////////////////////////////////////////////////////////////////////////////////////

REGISTER_TYPED_TEST_CASE_P

(

TransactionTest,

Concurrent1,

Concurrent2,

Concurrent3,

Merging1,

Async1,

AsyncMerging1,

Continuation1,

Continuation2,

Continuation3,

Continuation4

);

} // ~namespace

cpp.react/tests/src/TransactionTest.h at master · SymmetryLabs/cpp.react · GitHub

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