1 #include "rxcpp/rx.hpp" 2 namespace rx=rxcpp; 3 namespace rxu=rxcpp::util; 4 namespace rxsc=rxcpp::schedulers; 5 6 #include "rxcpp/rx-test.hpp" 7 #include "catch.hpp" 8 9 SCENARIO("take 2 - passes", "[take][passes][operators]"){ 10 GIVEN("a source"){ 11 auto sc = rxsc::make_test(); 12 auto w = sc.create_worker(); 13 const rxsc::test::messages<int> on; 14 15 auto xs = sc.make_hot_observable({ 16 on.next(150, 1), 17 on.next(210, 2), 18 on.next(220, 3), 19 on.next(230, 4), 20 on.next(240, 5), 21 on.completed(250) 22 }); 23 24 WHEN("2 values are taken"){ 25 26 auto res = w.start( __anon00d7eaeb0102() 27 [xs]() { 28 return xs 29 .take(2) 30 // forget type to workaround lambda deduction bug on msvc 2013 31 .as_dynamic(); 32 } 33 ); 34 35 THEN("the output only contains items sent while subscribed"){ 36 auto required = rxu::to_vector({ 37 on.next(210, 2), 38 on.next(220, 3), 39 on.completed(220) 40 }); 41 auto actual = res.get_observer().messages(); 42 REQUIRE(required == actual); 43 } 44 45 THEN("there was 1 subscription/unsubscription to the source"){ 46 auto required = rxu::to_vector({ 47 on.subscribe(200, 220) 48 }); 49 auto actual = xs.subscriptions(); 50 REQUIRE(required == actual); 51 } 52 53 } 54 } 55 } 56 57 SCENARIO("take 2 - fails", "[take][fails][operators]"){ 58 GIVEN("a source"){ 59 auto sc = rxsc::make_test(); 60 auto w = sc.create_worker(); 61 const rxsc::test::messages<int> on; 62 63 auto xs = sc.make_hot_observable({ 64 on.next(150, 1), 65 on.next(210, 2), 66 on.next(220, 3), 67 on.next(230, 4), 68 on.next(240, 5), 69 on.completed(250) 70 }); 71 72 WHEN("2 values are taken"){ 73 74 auto res = w.start( __anon00d7eaeb0202() 75 [xs]() { 76 return xs 77 // TYPO START 78 .skip(2) 79 // TYPO END 80 // forget type to workaround lambda deduction bug on msvc 2013 81 .as_dynamic(); 82 } 83 ); 84 85 THEN("the output only contains items sent while subscribed"){ 86 auto required = rxu::to_vector({ 87 on.next(210, 2), 88 on.next(220, 3), 89 on.completed(220) 90 }); 91 auto actual = res.get_observer().messages(); 92 REQUIRE(required == actual); 93 } 94 95 THEN("there was 1 subscription/unsubscription to the source"){ 96 auto required = rxu::to_vector({ 97 on.subscribe(200, 220) 98 }); 99 auto actual = xs.subscriptions(); 100 REQUIRE(required == actual); 101 } 102 103 } 104 } 105 } 106