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|
#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);
}
}
}
}
|
