60 lines
2.0 KiB
C++
60 lines
2.0 KiB
C++
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#include "../test.h"
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SCENARIO("defer stops on completion", "[defer][sources]"){
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GIVEN("a test cold observable of ints"){
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auto sc = rxsc::make_test();
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auto w = sc.create_worker();
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const rxsc::test::messages<long> on;
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long invoked = 0;
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rxu::detail::maybe<rx::test::testable_observable<long>> xs;
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WHEN("deferred"){
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auto empty = rx::observable<>::empty<long>();
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auto just = rx::observable<>::just(42);
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auto one = rx::observable<>::from(42);
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auto error = rx::observable<>::error<long>(rxu::error_ptr());
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auto runtimeerror = rx::observable<>::error<long>(std::runtime_error("runtime"));
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auto res = w.start(
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[&]() {
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return rx::observable<>::defer(
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[&](){
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invoked++;
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xs.reset(sc.make_cold_observable({
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on.next(100, sc.clock()),
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on.completed(200)
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}));
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return xs.get();
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})
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// forget type to workaround lambda deduction bug on msvc 2013
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.as_dynamic();
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}
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);
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THEN("the output stops on completion"){
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auto required = rxu::to_vector({
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on.next(300, 200L),
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on.completed(400)
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});
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auto actual = res.get_observer().messages();
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REQUIRE(required == actual);
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}
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THEN("there was one subscription and one unsubscription"){
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auto required = rxu::to_vector({
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on.subscribe(200, 400)
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});
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auto actual = xs.get().subscriptions();
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REQUIRE(required == actual);
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}
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THEN("defer was called until completed"){
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REQUIRE(1 == invoked);
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}
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}
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}
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}
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