Rx/v2/test/sources/create.cpp


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#include "rxcpp/rx.hpp"
namespace rx=rxcpp;
namespace rxu=rxcpp::util;
namespace rxsc=rxcpp::schedulers;

#include "rxcpp/rx-test.hpp"
#include "catch.hpp"

SCENARIO("create stops on completion", "[create][sources]"){
    GIVEN("a test cold observable of ints"){
        auto sc = rxsc::make_test();
        auto w = sc.create_worker();
        const rxsc::test::messages<int> on;

        long invoked = 0;

        WHEN("created"){

            auto res = w.start(
                [&]() {
                    return rx::observable<>::create<int>(
                        [&](const rx::subscriber<int>& s){
                            invoked++;
                            s.on_next(1);
                            s.on_next(2);
                        })
                        // forget type to workaround lambda deduction bug on msvc 2013
                        .as_dynamic();
                }
            );

            THEN("the output contains all items"){
                auto required = rxu::to_vector({
                    on.on_next(200, 1),
                    on.on_next(200, 2)
                });
                auto actual = res.get_observer().messages();
                REQUIRE(required == actual);
            }

            THEN("create was called until completed"){
                REQUIRE(1 == invoked);
            }
        }
    }
}