#include "../test.h"
#include <rxcpp/operators/rx-map.hpp>
#include <rxcpp/operators/rx-take.hpp>
#include <rxcpp/operators/rx-scan.hpp>
SCENARIO("scan: issue 41", "[scan][operators][issue][!hide]"){
GIVEN("map of scan of interval"){
auto sc = rxsc::make_current_thread();
auto so = rxcpp::synchronize_in_one_worker(sc);
auto start = sc.now() + std::chrono::seconds(2);
auto period = std::chrono::seconds(1);
rxcpp::observable<>::interval(start, period, so)
.scan(0, [] (int a, int i) { return a + i; })
.map([] (int i) { return i * i; })
.take(10)
.subscribe([] (int i) { std::cout << i << std::endl; });
}
}
SCENARIO("scan: seed, never", "[scan][operators]"){
GIVEN("a test hot observable of ints"){
auto sc = rxsc::make_test();
auto w = sc.create_worker();
const rxsc::test::messages<int> on;
int seed = 1;
auto xs = sc.make_hot_observable({
on.next(150, 1),
});
WHEN("mapped to ints that are one larger"){
auto res = w.start(
[&]() {
return xs
| rxo::scan(seed, [](int sum, int x) {
return sum + x;
})
// forget type to workaround lambda deduction bug on msvc 2013
| rxo::as_dynamic();
}
);
THEN("the output is empty"){
auto required = std::vector<rxsc::test::messages<int>::recorded_type>();
auto actual = res.get_observer().messages();
REQUIRE(required == actual);
}
THEN("there was one subscription and one unsubscription"){
auto required = rxu::to_vector({
on.subscribe(200, 1000)
});
auto actual = xs.subscriptions();
REQUIRE(required == actual);
}
}
}
}
SCENARIO("scan: seed, empty", "[scan][operators]"){
GIVEN("a test hot observable of ints"){
auto sc = rxsc::make_test();
auto w = sc.create_worker();
const rxsc::test::messages<int> on;
int seed = 1;
auto xs = sc.make_hot_observable({
on.next(150, 1),
on.completed(250)
});
WHEN("mapped to ints that are one larger"){
auto res = w.start(
[&]() {
return xs
.scan(seed, [](int sum, int x) {
return sum + x;
})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();
}
);
THEN("the output stops on completion"){
auto required = rxu::to_vector({
on.completed(250)
});
auto actual = res.get_observer().messages();
REQUIRE(required == actual);
}
THEN("there was one subscription and one unsubscription"){
auto required = rxu::to_vector({
on.subscribe(200, 250)
});
auto actual = xs.subscriptions();
REQUIRE(required == actual);
}
}
}
}
SCENARIO("scan: seed, return", "[scan][operators]"){
GIVEN("a test hot observable of ints"){
auto sc = rxsc::make_test();
auto w = sc.create_worker();
const rxsc::test::messages<int> on;
int seed = 1;
auto xs = sc.make_hot_observable({
on.next(150, 1),
on.next(220, 2),
on.completed(250)
});
WHEN("mapped to ints that are one larger"){
auto res = w.start(
[&]() {
return xs
.scan(seed, [](int sum, int x) {
return sum + x;
})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();
}
);
THEN("the output stops on completion"){
auto required = rxu::to_vector({
on.next(220, seed + 2),
on.completed(250)
});
auto actual = res.get_observer().messages();
REQUIRE(required == actual);
}
THEN("there was one subscription and one unsubscription"){
auto required = rxu::to_vector({
on.subscribe(200, 250)
});
auto actual = xs.subscriptions();
REQUIRE(required == actual);
}
}
}
}
SCENARIO("scan: seed, throw", "[scan][operators]"){
GIVEN("a test hot observable of ints"){
auto sc = rxsc::make_test();
auto w = sc.create_worker();
const rxsc::test::messages<int> on;
int seed = 1;
std::runtime_error ex("scan on_error from source");
auto xs = sc.make_hot_observable({
on.next(150, 1),
on.error(250, ex)
});
WHEN("mapped to ints that are one larger"){
auto res = w.start(
[&]() {
return xs
.scan(seed, [](int sum, int x) {
return sum + x;
})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();
}
);
THEN("the output stops on error"){
auto required = rxu::to_vector({
on.error(250, ex)
});
auto actual = res.get_observer().messages();
REQUIRE(required == actual);
}
THEN("there was one subscription and one unsubscription"){
auto required = rxu::to_vector({
on.subscribe(200, 250)
});
auto actual = xs.subscriptions();
REQUIRE(required == actual);
}
}
}
}
SCENARIO("scan: seed, some data", "[scan][operators]"){
GIVEN("a test hot observable of ints"){
auto sc = rxsc::make_test();
auto w = sc.create_worker();
const rxsc::test::messages<int> on;
int seed = 1;
auto xs = sc.make_hot_observable({
on.next(150, 1),
on.next(210, 2),
on.next(220, 3),
on.next(230, 4),
on.next(240, 5),
on.completed(250)
});
WHEN("mapped to ints that are one larger"){
auto res = w.start(
[&]() {
return xs
.scan(seed, [](int sum, int x) {
return sum + x;
})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();
}
);
THEN("the output stops on completion"){
auto required = rxu::to_vector({
on.next(210, seed + 2),
on.next(220, seed + 2 + 3),
on.next(230, seed + 2 + 3 + 4),
on.next(240, seed + 2 + 3 + 4 + 5),
on.completed(250)
});
auto actual = res.get_observer().messages();
REQUIRE(required == actual);
}
THEN("there was one subscription and one unsubscription"){
auto required = rxu::to_vector({
on.subscribe(200, 250)
});
auto actual = xs.subscriptions();
REQUIRE(required == actual);
}
}
}
}
SCENARIO("scan: seed, accumulator throws", "[scan][operators][!throws]"){
GIVEN("a test hot observable of ints"){
auto sc = rxsc::make_test();
auto w = sc.create_worker();
const rxsc::test::messages<int> on;
int seed = 1;
std::runtime_error ex("scan on_error from source");
auto xs = sc.make_hot_observable({
on.next(150, 1),
on.next(210, 2),
on.next(220, 3),
on.next(230, 4),
on.next(240, 5),
on.completed(250)
});
WHEN("mapped to ints that are one larger"){
auto res = w.start(
[&]() {
return xs
.scan(seed, [&](int sum, int x) {
if (x == 4) {
rxu::throw_exception(ex);
}
return sum + x;
})
// forget type to workaround lambda deduction bug on msvc 2013
.as_dynamic();
}
);
THEN("the output stops on error"){
auto required = rxu::to_vector({
on.next(210, seed + 2),
on.next(220, seed + 2 + 3),
on.error(230, ex)
});
auto actual = res.get_observer().messages();
REQUIRE(required == actual);
}
THEN("there was one subscription and one unsubscription"){
auto required = rxu::to_vector({
on.subscribe(200, 230)
});
auto actual = xs.subscriptions();
REQUIRE(required == actual);
}
}
}
}