| #include "../test.h" |
| #include <rxcpp/operators/rx-start_with.hpp> |
| |
| SCENARIO("start_with - source never emits or completes", "[start_with][operators]"){ |
| GIVEN("a source"){ |
| auto sc = rxsc::make_test(); |
| auto w = sc.create_worker(); |
| const rxsc::test::messages<int> on; |
| |
| auto xs = sc.make_hot_observable({ |
| on.next(150, 1) |
| }); |
| |
| WHEN("start_with one value"){ |
| |
| auto res = w.start( |
| [xs]() { |
| return xs |
| | rxo::start_with(1) |
| // forget type to workaround lambda deduction bug on msvc 2013 |
| | rxo::as_dynamic(); |
| } |
| ); |
| |
| THEN("the output contains start_with value"){ |
| auto required = rxu::to_vector({ |
| on.next(200, 1) |
| }); |
| auto actual = res.get_observer().messages(); |
| REQUIRE(required == actual); |
| } |
| |
| THEN("there was 1 subscription/unsubscription to the source"){ |
| auto required = rxu::to_vector({ |
| on.subscribe(200, 1000) |
| }); |
| auto actual = xs.subscriptions(); |
| REQUIRE(required == actual); |
| } |
| } |
| } |
| } |
| |
| SCENARIO("start_with - source completes without emitting items", "[start_with][operators]"){ |
| GIVEN("a source"){ |
| auto sc = rxsc::make_test(); |
| auto w = sc.create_worker(); |
| const rxsc::test::messages<int> on; |
| |
| auto xs = sc.make_hot_observable({ |
| on.next(150, 1), |
| on.completed(250) |
| }); |
| |
| WHEN("start_with one value"){ |
| |
| auto res = w.start( |
| [xs]() { |
| return xs |
| .start_with(5) |
| // forget type to workaround lambda deduction bug on msvc 2013 |
| .as_dynamic(); |
| } |
| ); |
| |
| THEN("the output contains start_with item and complete message"){ |
| auto required = rxu::to_vector({ |
| on.next(200, 5), |
| on.completed(250) |
| }); |
| auto actual = res.get_observer().messages(); |
| REQUIRE(required == actual); |
| } |
| |
| THEN("there was 1 subscription/unsubscription to the source"){ |
| auto required = rxu::to_vector({ |
| on.subscribe(200, 250) |
| }); |
| auto actual = xs.subscriptions(); |
| REQUIRE(required == actual); |
| } |
| |
| } |
| } |
| } |
| |
| SCENARIO("start_with - source emits and completes", "[start_with][operators]"){ |
| GIVEN("a source"){ |
| auto sc = rxsc::make_test(); |
| auto w = sc.create_worker(); |
| const rxsc::test::messages<int> on; |
| |
| auto xs = sc.make_hot_observable({ |
| on.next(150, 1), |
| on.next(210, 2), |
| on.completed(250) |
| }); |
| |
| WHEN("start_with one value"){ |
| |
| auto res = w.start( |
| [xs]() { |
| return xs |
| .start_with(5) |
| // forget type to workaround lambda deduction bug on msvc 2013 |
| .as_dynamic(); |
| } |
| ); |
| |
| THEN("the output contains start_with item and the items sent while subscribed"){ |
| auto required = rxu::to_vector({ |
| on.next(200, 5), |
| on.next(210, 2), |
| on.completed(250) |
| }); |
| auto actual = res.get_observer().messages(); |
| REQUIRE(required == actual); |
| } |
| |
| THEN("there was 1 subscription/unsubscription to the source"){ |
| auto required = rxu::to_vector({ |
| on.subscribe(200, 250) |
| }); |
| auto actual = xs.subscriptions(); |
| REQUIRE(required == actual); |
| } |
| |
| } |
| } |
| } |
| |
| SCENARIO("start_with - sources terminates with an error", "[start_with][operators]"){ |
| GIVEN("a source"){ |
| auto sc = rxsc::make_test(); |
| auto w = sc.create_worker(); |
| const rxsc::test::messages<int> on; |
| |
| std::runtime_error ex("start_with on_error from source"); |
| |
| auto xs = sc.make_hot_observable({ |
| on.next(150, 1), |
| on.error(250, ex) |
| }); |
| |
| WHEN("start_with one value"){ |
| |
| auto res = w.start( |
| [xs]() { |
| return xs |
| .start_with(5) |
| // forget type to workaround lambda deduction bug on msvc 2013 |
| .as_dynamic(); |
| } |
| ); |
| |
| THEN("the output contains start_with item and an error"){ |
| auto required = rxu::to_vector({ |
| on.next(200, 5), |
| on.error(250, ex) |
| }); |
| auto actual = res.get_observer().messages(); |
| REQUIRE(required == actual); |
| } |
| |
| THEN("there was 1 subscription/unsubscription to the source"){ |
| auto required = rxu::to_vector({ |
| on.subscribe(200, 250) |
| }); |
| auto actual = xs.subscriptions(); |
| REQUIRE(required == actual); |
| } |
| |
| } |
| } |
| } |
| |
| SCENARIO("start_with several items - source emits and completes", "[start_with][operators]"){ |
| GIVEN("a source"){ |
| auto sc = rxsc::make_test(); |
| auto w = sc.create_worker(); |
| const rxsc::test::messages<int> on; |
| |
| auto xs = sc.make_hot_observable({ |
| on.next(150, 1), |
| on.next(210, 2), |
| on.completed(250) |
| }); |
| |
| WHEN("start_with one value"){ |
| |
| auto res = w.start( |
| [xs]() { |
| return xs |
| .start_with(5, 6) |
| // forget type to workaround lambda deduction bug on msvc 2013 |
| .as_dynamic(); |
| } |
| ); |
| |
| THEN("the output contains start_with item and the items sent while subscribed"){ |
| auto required = rxu::to_vector({ |
| on.next(200, 5), |
| on.next(200, 6), |
| on.next(210, 2), |
| on.completed(250) |
| }); |
| auto actual = res.get_observer().messages(); |
| REQUIRE(required == actual); |
| } |
| |
| THEN("there was 1 subscription/unsubscription to the source"){ |
| auto required = rxu::to_vector({ |
| on.subscribe(200, 250) |
| }); |
| auto actual = xs.subscriptions(); |
| REQUIRE(required == actual); |
| } |
| |
| } |
| } |
| } |