311 lines
9.5 KiB
C++
311 lines
9.5 KiB
C++
#include "../test.h"
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#include <rxcpp/operators/rx-map.hpp>
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#include <rxcpp/operators/rx-take.hpp>
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#include <rxcpp/operators/rx-scan.hpp>
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SCENARIO("scan: issue 41", "[scan][operators][issue][!hide]"){
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GIVEN("map of scan of interval"){
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auto sc = rxsc::make_current_thread();
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auto so = rxcpp::synchronize_in_one_worker(sc);
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auto start = sc.now() + std::chrono::seconds(2);
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auto period = std::chrono::seconds(1);
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rxcpp::observable<>::interval(start, period, so)
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.scan(0, [] (int a, int i) { return a + i; })
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.map([] (int i) { return i * i; })
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.take(10)
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.subscribe([] (int i) { std::cout << i << std::endl; });
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}
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}
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SCENARIO("scan: seed, never", "[scan][operators]"){
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GIVEN("a test hot 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<int> on;
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int seed = 1;
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auto xs = sc.make_hot_observable({
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on.next(150, 1),
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});
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WHEN("mapped to ints that are one larger"){
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auto res = w.start(
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[&]() {
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return xs
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| rxo::scan(seed, [](int sum, int x) {
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return sum + x;
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})
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// forget type to workaround lambda deduction bug on msvc 2013
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| rxo::as_dynamic();
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}
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);
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THEN("the output is empty"){
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auto required = std::vector<rxsc::test::messages<int>::recorded_type>();
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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, 1000)
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});
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auto actual = xs.subscriptions();
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REQUIRE(required == actual);
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}
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}
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}
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}
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SCENARIO("scan: seed, empty", "[scan][operators]"){
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GIVEN("a test hot 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<int> on;
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int seed = 1;
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auto xs = sc.make_hot_observable({
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on.next(150, 1),
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on.completed(250)
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});
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WHEN("mapped to ints that are one larger"){
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auto res = w.start(
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[&]() {
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return xs
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.scan(seed, [](int sum, int x) {
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return sum + x;
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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.completed(250)
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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, 250)
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});
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auto actual = xs.subscriptions();
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REQUIRE(required == actual);
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}
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}
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}
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}
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SCENARIO("scan: seed, return", "[scan][operators]"){
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GIVEN("a test hot 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<int> on;
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int seed = 1;
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auto xs = sc.make_hot_observable({
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on.next(150, 1),
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on.next(220, 2),
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on.completed(250)
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});
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WHEN("mapped to ints that are one larger"){
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auto res = w.start(
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[&]() {
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return xs
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.scan(seed, [](int sum, int x) {
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return sum + x;
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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(220, seed + 2),
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on.completed(250)
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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, 250)
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});
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auto actual = xs.subscriptions();
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REQUIRE(required == actual);
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}
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}
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}
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}
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SCENARIO("scan: seed, throw", "[scan][operators]"){
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GIVEN("a test hot 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<int> on;
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int seed = 1;
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std::runtime_error ex("scan on_error from source");
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auto xs = sc.make_hot_observable({
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on.next(150, 1),
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on.error(250, ex)
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});
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WHEN("mapped to ints that are one larger"){
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auto res = w.start(
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[&]() {
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return xs
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.scan(seed, [](int sum, int x) {
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return sum + x;
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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 error"){
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auto required = rxu::to_vector({
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on.error(250, ex)
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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, 250)
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});
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auto actual = xs.subscriptions();
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REQUIRE(required == actual);
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}
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}
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}
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}
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SCENARIO("scan: seed, some data", "[scan][operators]"){
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GIVEN("a test hot 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<int> on;
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int seed = 1;
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auto xs = sc.make_hot_observable({
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on.next(150, 1),
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on.next(210, 2),
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on.next(220, 3),
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on.next(230, 4),
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on.next(240, 5),
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on.completed(250)
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});
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WHEN("mapped to ints that are one larger"){
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auto res = w.start(
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[&]() {
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return xs
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.scan(seed, [](int sum, int x) {
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return sum + x;
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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(210, seed + 2),
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on.next(220, seed + 2 + 3),
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on.next(230, seed + 2 + 3 + 4),
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on.next(240, seed + 2 + 3 + 4 + 5),
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on.completed(250)
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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, 250)
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});
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auto actual = xs.subscriptions();
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REQUIRE(required == actual);
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}
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}
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}
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}
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SCENARIO("scan: seed, accumulator throws", "[scan][operators][!throws]"){
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GIVEN("a test hot 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<int> on;
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int seed = 1;
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std::runtime_error ex("scan on_error from source");
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auto xs = sc.make_hot_observable({
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on.next(150, 1),
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on.next(210, 2),
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on.next(220, 3),
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on.next(230, 4),
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on.next(240, 5),
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on.completed(250)
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});
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WHEN("mapped to ints that are one larger"){
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auto res = w.start(
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[&]() {
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return xs
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.scan(seed, [&](int sum, int x) {
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if (x == 4) {
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rxu::throw_exception(ex);
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}
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return sum + x;
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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 error"){
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auto required = rxu::to_vector({
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on.next(210, seed + 2),
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on.next(220, seed + 2 + 3),
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on.error(230, ex)
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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, 230)
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});
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auto actual = xs.subscriptions();
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REQUIRE(required == actual);
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}
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}
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}
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}
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