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#include "rxcpp/rx.hpp"
namespace rx=rxcpp;
namespace rxu=rxcpp::util;
namespace rxs=rxcpp::sources;
namespace rxsc=rxcpp::schedulers;
#include "rxcpp/rx-test.hpp"
#include "catch.hpp"
static const int static_tripletCount = 100;
SCENARIO("concat_map pythagorian ranges", "[hide][range][concat_map][pythagorian][perf]"){
const int& tripletCount = static_tripletCount;
GIVEN("some ranges"){
WHEN("generating pythagorian triplets"){
using namespace std::chrono;
typedef steady_clock clock;
auto sc = rxsc::make_immediate();
//auto sc = rxsc::make_current_thread();
auto so = rx::identity_one_worker(sc);
int c = 0;
int ct = 0;
int n = 1;
auto start = clock::now();
auto triples =
rxs::range(1, so)
.concat_map(
[&c, so](int z){
return rxs::range(1, z, 1, so)
.concat_map(
[&c, so, z](int x){
return rxs::range(x, z, 1, so)
.filter([&c, z, x](int y){++c; return x*x + y*y == z*z;})
.map([z, x](int y){return std::make_tuple(x, y, z);})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();},
[](int x, std::tuple<int,int,int> triplet){return triplet;})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();},
[](int z, std::tuple<int,int,int> triplet){return triplet;});
triples
.take(tripletCount)
.subscribe(
rxu::apply_to([&ct](int x,int y,int z){++ct;}),
[](std::exception_ptr){abort();});
auto finish = clock::now();
auto msElapsed = duration_cast<milliseconds>(finish.time_since_epoch()) -
duration_cast<milliseconds>(start.time_since_epoch());
std::cout << "concat pythagorian range : " << n << " subscribed, " << c << " filtered to, " << ct << " triplets, " << msElapsed.count() << "ms elapsed " << c / (msElapsed.count() / 1000.0) << " ops/sec" << std::endl;
}
}
}
SCENARIO("synchronize concat_map pythagorian ranges", "[hide][range][concat_map][synchronize][pythagorian][perf]"){
const int& tripletCount = static_tripletCount;
GIVEN("some ranges"){
WHEN("generating pythagorian triplets"){
using namespace std::chrono;
typedef steady_clock clock;
auto so = rx::synchronize_event_loop();
int c = 0;
int n = 1;
auto start = clock::now();
auto triples =
rxs::range(1, so)
.concat_map(
[&c, so](int z){
return rxs::range(1, z, 1, so)
.concat_map(
[&c, so, z](int x){
return rxs::range(x, z, 1, so)
.filter([&c, z, x](int y){
++c;
if (x*x + y*y == z*z) {
return true;}
else {
return false;}})
.map([z, x](int y){return std::make_tuple(x, y, z);})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();},
[](int x, std::tuple<int,int,int> triplet){return triplet;},
so)
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();},
[](int z, std::tuple<int,int,int> triplet){return triplet;},
so);
int ct = triples
.take(tripletCount)
.as_blocking()
.count();
auto finish = clock::now();
auto msElapsed = duration_cast<milliseconds>(finish.time_since_epoch()) -
duration_cast<milliseconds>(start.time_since_epoch());
std::cout << "concat sync pythagorian range : " << n << " subscribed, " << c << " filtered to, " << ct << " triplets, " << msElapsed.count() << "ms elapsed " << c / (msElapsed.count() / 1000.0) << " ops/sec" << std::endl;
}
}
}
SCENARIO("observe_on concat_map pythagorian ranges", "[hide][range][concat_map][observe_on][pythagorian][perf]"){
const int& tripletCount = static_tripletCount;
GIVEN("some ranges"){
WHEN("generating pythagorian triplets"){
using namespace std::chrono;
typedef steady_clock clock;
auto so = rx::observe_on_event_loop();
int c = 0;
int n = 1;
auto start = clock::now();
auto triples =
rxs::range(1, so)
.concat_map(
[&c, so](int z){
return rxs::range(1, z, 1, so)
.concat_map(
[&c, so, z](int x){
return rxs::range(x, z, 1, so)
.filter([&c, z, x](int y){
++c;
if (x*x + y*y == z*z) {
return true;}
else {
return false;}})
.map([z, x](int y){return std::make_tuple(x, y, z);})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();},
[](int x, std::tuple<int,int,int> triplet){return triplet;},
so)
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();},
[](int z, std::tuple<int,int,int> triplet){return triplet;},
so);
int ct = triples
.take(tripletCount)
.as_blocking()
.count();
auto finish = clock::now();
auto msElapsed = duration_cast<milliseconds>(finish.time_since_epoch()) -
duration_cast<milliseconds>(start.time_since_epoch());
std::cout << "concat observe_on pythagorian range : " << n << " subscribed, " << c << " filtered to, " << ct << " triplets, " << msElapsed.count() << "ms elapsed " << c / (msElapsed.count() / 1000.0) << " ops/sec" << std::endl;
}
}
}
SCENARIO("serialize concat_map pythagorian ranges", "[hide][range][concat_map][serialize][pythagorian][perf]"){
const int& tripletCount = static_tripletCount;
GIVEN("some ranges"){
WHEN("generating pythagorian triplets"){
using namespace std::chrono;
typedef steady_clock clock;
auto so = rx::serialize_event_loop();
int c = 0;
int n = 1;
auto start = clock::now();
auto triples =
rxs::range(1, so)
.concat_map(
[&c, so](int z){
return rxs::range(1, z, 1, so)
.concat_map(
[&c, so, z](int x){
return rxs::range(x, z, 1, so)
.filter([&c, z, x](int y){
++c;
if (x*x + y*y == z*z) {
return true;}
else {
return false;}})
.map([z, x](int y){return std::make_tuple(x, y, z);})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();},
[](int x, std::tuple<int,int,int> triplet){return triplet;},
so)
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();},
[](int z, std::tuple<int,int,int> triplet){return triplet;},
so);
int ct = triples
.take(tripletCount)
.as_blocking()
.count();
auto finish = clock::now();
auto msElapsed = duration_cast<milliseconds>(finish.time_since_epoch()) -
duration_cast<milliseconds>(start.time_since_epoch());
std::cout << "concat serial pythagorian range : " << n << " subscribed, " << c << " filtered to, " << ct << " triplets, " << msElapsed.count() << "ms elapsed " << c / (msElapsed.count() / 1000.0) << " ops/sec" << std::endl;
}
}
}
SCENARIO("concat_map completes", "[concat_map][map][operators]"){
GIVEN("two cold observables. one of ints. one of strings."){
auto sc = rxsc::make_test();
auto w = sc.create_worker();
const rxsc::test::messages<int> i_on;
const rxsc::test::messages<std::string> s_on;
auto xs = sc.make_cold_observable({
i_on.next(100, 4),
i_on.next(200, 2),
i_on.completed(500)
});
auto ys = sc.make_cold_observable({
s_on.next(50, "foo"),
s_on.next(100, "bar"),
s_on.next(150, "baz"),
s_on.next(200, "qux"),
s_on.completed(250)
});
WHEN("each int is mapped to the strings"){
auto res = w.start(
[&]() {
return xs
.concat_map(
[&](int){
return ys;},
[](int, std::string s){
return s;})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();
}
);
THEN("the output contains strings repeated for each int"){
auto required = rxu::to_vector({
s_on.next(350, "foo"),
s_on.next(400, "bar"),
s_on.next(450, "baz"),
s_on.next(500, "qux"),
s_on.next(600, "foo"),
s_on.next(650, "bar"),
s_on.next(700, "baz"),
s_on.next(750, "qux"),
s_on.completed(800)
});
auto actual = res.get_observer().messages();
REQUIRE(required == actual);
}
THEN("there was one subscription and one unsubscription to the ints"){
auto required = rxu::to_vector({
i_on.subscribe(200, 700)
});
auto actual = xs.subscriptions();
REQUIRE(required == actual);
}
THEN("there were 2 subscription and unsubscription to the strings"){
auto required = rxu::to_vector({
s_on.subscribe(300, 550),
s_on.subscribe(550, 800)
});
auto actual = ys.subscriptions();
REQUIRE(required == actual);
}
}
}
}
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