| #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); |
| } |
| } |
| } |
| } |