public void Should_expect_never_observable()
{
var scheduler = new MarbleScheduler();
scheduler.ExpectObservable(Observable.Never <string>()).ToBe("-", new { });
scheduler.ExpectObservable(Observable.Never <string>()).ToBe("---", new { });
scheduler.Flush();
}
public void Should_expect_empty_observable()
{
var scheduler = new MarbleScheduler();
scheduler.ExpectObservable(Observable.Empty <string>()).ToBe("|", new { });
scheduler.Flush();
}
public void Should_expect_one_value_observable()
{
var scheduler = new MarbleScheduler();
scheduler.ExpectObservable(Observable.Return("hello")).ToBe("(h|)", new { h = "hello" });
scheduler.Flush();
}
public void ExpectObservable_should_work_for_observable_return()
{
using (var s = new MarbleScheduler())
{
s.ExpectObservable(Observable.Return('a', s)).ToBe("(a|)");
}
}
public void ExpectObservable_should_work_for_observable_throw()
{
using (var s = new MarbleScheduler())
{
s.ExpectObservable(Observable.Throw <char>(new Exception(), s)).ToBe("#");
}
}
public void ExpectObservable_should_work_for_observable_empty()
{
using (var s = new MarbleScheduler())
{
s.ExpectObservable(Observable.Empty <int>(s)).ToBe("|", Dict.Empty <int>());
}
}
public void Should_expect_observable_on_error()
{
var scheduler = new MarbleScheduler();
var source = scheduler.CreateColdObservable <Unit>("---#", null, new Exception());
scheduler.ExpectObservable(source).ToBe("---#", null, new Exception());
scheduler.Flush();
}
public void Should_use_unsubscription_diagram()
{
var scheduler = new MarbleScheduler();
var source = scheduler.CreateHotObservable("---^-a-b-|");
var unsubscribe = "---!";
var expected = "--a";
scheduler.ExpectObservable(source, unsubscribe).ToBe(expected);
scheduler.Flush();
}
public void Should_fail_when_event_values_differ()
{
var scheduler = new MarbleScheduler();
Check.ThatCode(() =>
{
scheduler.ExpectObservable(Observable.Return("hello")).ToBe("h", new { h = "bye" });
scheduler.Flush();
}).ThrowsAny();
}
public void ExpectObservable_should_accept_unsubscription_marble_diagram()
{
using (var s = new MarbleScheduler())
{
var source = s.Hot("---^-a-b-|");
var unsubscribe = "---!";
var expected = "--a";
s.ExpectObservable(source, unsubscribe).ToBe(expected);
}
}
public void Markers()
{
using (var s = new MarbleScheduler())
{
var e1 = s.Hot("-a");
var e2 = s.Hot("--b");
var expected = "-ab";
s.ExpectObservable(e1.Merge(e2)).ToBe(expected);
}
}
public void Ensure()
{
using (var s = new MarbleScheduler())
{
var e1 = s.Hot("----a--^--b-------c--|");
var e2 = s.Hot("---d-^--e---------f-----|");
var expected = "---(be)----c-f-----|";
s.ExpectObservable(e1.Merge(e2)).ToBe(expected);
}
}
public void Should_demo_with_a_simple_operator()
{
var scheduler = new MarbleScheduler();
var sourceEvents = scheduler.CreateColdObservable("a-b-c-|");
var upperEvents = sourceEvents.Select(s => s.ToUpper());
scheduler.ExpectObservable(upperEvents).ToBe("A-B-C-|");
scheduler.Flush();
}
public void Should_fail_when_observables_end_with_different_error_types()
{
var scheduler = new MarbleScheduler();
Check.ThatCode(() =>
{
var source = _scheduler.CreateColdObservable <Unit>("---#", null, new ArgumentException());
scheduler.ExpectObservable(source).ToBe("---#", null, new Exception());
scheduler.Flush();
}).ThrowsAny();
}
public void ExpectObservable_should_support_testing_metastreams()
{
using (var s = new MarbleScheduler())
{
var x = s.Cold("-a-b|");
var y = s.Cold("-c-d|");
var myObservable = s.Hot("---x---y----|", Dict.Map('x', x, 'y', y));
var expected = "---x---y----|";
s.ExpectObservable(myObservable).ToBe(expected, Dict.Map('x', x, 'y', y));
}
}
public void Should_fail_when_event_timing_differs()
{
var scheduler = new MarbleScheduler();
Action timingDiffer = () =>
{
scheduler.ExpectObservable(Observable.Return("hello")).ToBe("--h", new { h = "hello" });
scheduler.Flush();
};
Check.ThatCode(timingDiffer).ThrowsAny();
}
public void ExpectObservable_should_materialize_inner_observables()
{
var s = new MarbleScheduler();
var x1 = s.Cold("---a---b---|");
var x2 = s.Cold("---a---b---|");
var y = s.Hot("---x---", Dict.Map('x', x1));
s.ExpectObservable(y).ToBe("---x---", Dict.Map('x', x2), comparer: new ObservableEqualityComparer <char>());
s.Start();
}
public void EqualityComparer_can_be_provided_in_ToBe()
{
using (var s = new MarbleScheduler())
{
var veryCuriousEqualityComparer =
new LambdaEqualityComparer <int>((a, b) => Math.Abs(a - b) == 1, x => 0);
s.ExpectObservable(Observable.Return(1)).ToBe(
"(x|)",
Dict.Map('x', 2),
comparer: veryCuriousEqualityComparer);
}
}
public void ExpectObservable_should_work_for_zipped_observable()
{
using (var s = new MarbleScheduler())
{
var dict = Enumerable.Range(0, 10)
.Zip(Enumerable.Range('0' + 0, 10).Select(p => (char)p), Tuple.Create)
.ToDictionary(k => k.Item2, v => v.Item1);
var e1 = s.Hot("----1--^--2--3-----0--|", dict);
var e2 = s.Hot("---2-^--1---2--1----9--|", dict);
var expected = "---3---5----1--|";
s.ExpectObservable(e1.Zip(e2, (a, b) => a + b)).ToBe(expected, dict);
}
}
public async Task should_stop_stream_after_10_seconds()
{
// given
var scheduler = new MarbleScheduler();
var quoteSource = Observable.Never <string>();
// when
var server = CreateServer(quoteSource, scheduler);
var stream = await server.GetEvents();
// then
scheduler.ExpectObservable(stream).ToBe("----------|");
scheduler.Flush();
}
public void Should_support_testing_metastreams()
{
var scheduler = new MarbleScheduler();
var x = scheduler.CreateColdObservable("-a-b|");
var y = scheduler.CreateColdObservable("-c-d|");
var myObservable = scheduler.CreateHotObservable <IObservable <string> >("---x---y----|", new { x = x, y = y });
var expected = "---x---y----|";
var expectedx = scheduler.CreateColdObservable("-a-b|");
var expectedy = scheduler.CreateColdObservable("-c-d|");
scheduler.ExpectObservable(myObservable).ToBe(expected, new { x = expectedx, y = expectedy });
scheduler.Flush();
}
public async Task should_forward_forex_data()
{
// given
var scheduler = new MarbleScheduler();
var forexSource = scheduler.CreateHotObservable <string>("--f--", new { f = new Quote("EUR/USD", 1.4).ToJson() });
// when
var forexStream = await Create(forexSource).GetEvents();
// then
scheduler.ExpectObservable(forexStream.Take(1))
.ToBe("--(v|)", new { v = 1.4 });
scheduler.Flush();
}
public async Task should_send_a_stock_message_when_receiving_a_quote()
{
// given
var scheduler = new MarbleScheduler();
var quoteSource = scheduler.CreateHotObservable <string>("--q--", new { q = new Quote("GOOGL", 705.8673).ToJson() });
// when
var server = CreateServer(quoteSource, scheduler);
var stream = await server.GetEvents();
// then
scheduler.ExpectObservable(stream.Select(s => s.CompanyName).Concat(Observable.Never <string>()))
.ToBe("--s--", new { s = "Alphabet Inc" });
scheduler.Flush();
}
public void ExpectObservable_should_work_for_combine_latest_observable()
{
using (var s = new MarbleScheduler())
{
var e1 = s.Cold("---a--b----|");
var e2 = s.Cold("--c----d----|");
var expected = "---x--yz----|";
var dict = new Dictionary <char, string>
{
{ 'x', "ac" },
{ 'y', "bc" },
{ 'z', "bd" }
};
s.ExpectObservable(e1.CombineLatest(e2, (a, b) => a.ToString() + b.ToString()))
.ToBe(expected, dict);
}
}
public void ExpectObservable_should_handle_inner_observables()
{
using (var s = new MarbleScheduler())
{
var x = s.Cold("--a--b--c--d--e--| ");
var xsubs = " ^ ! ";
var y = s.Cold("---f---g---h---i--|");
var ysubs = " ^ !";
var e1 = s.Hot("---------x---------y---------| ");
var e1subs = "^ ! ";
var expected = "-----------a--b--c----f---g---h---i--|";
var observableLookup = Dict.Map('x', x, 'y', y);
var result = e1.Select(p => observableLookup[p]).Switch();
s.ExpectObservable(result).ToBe(expected);
s.ExpectSubscriptions(x.Subscriptions).ToBe(xsubs);
s.ExpectSubscriptions(y.Subscriptions).ToBe(ysubs);
s.ExpectSubscriptions(e1.Subscriptions).ToBe(e1subs);
}
}
public void Should_demo_metastreams_with_windows()
{
var scheduler = new MarbleScheduler();
var input = "a---b---c---d-|";
var myObservable = scheduler.CreateColdObservable(input);
var result = myObservable.Window(2, 1);
var aWindow = scheduler.CreateColdObservable("a---(b|)");
var bWindow = scheduler.CreateColdObservable("----b---(c|)");
var cWindow = scheduler.CreateColdObservable("----c---(d|)");
var dWindow = scheduler.CreateColdObservable("----d-|");
var eWindow = scheduler.CreateColdObservable("--|");
var expected = "(ab)c---d---e-|";
scheduler.ExpectObservable(result).ToBe(expected, new { a = aWindow, b = bWindow, c = cWindow, d = dWindow, e = eWindow });
scheduler.Flush();
}
public async Task should_send_a_stock_message_only_once_when_receiving_two_quotes_for_the_same_stock()
{
// given
var scheduler = new MarbleScheduler();
var quoteSource = scheduler.CreateHotObservable <string>("--f-s-t--", new
{
f = new Quote("GOOGL", 705.8673).ToJson(),
s = new Quote("GOOGL", 705.8912).ToJson(),
t = new Quote("IBM", 106.344).ToJson()
});
// when
var server = CreateServer(quoteSource, scheduler);
var stream = await server.GetEvents();
// then
scheduler.ExpectObservable(stream.Select(s => s.CompanyName).Concat(Observable.Never <string>()))
.ToBe("--g---i--", new
{
g = "Alphabet Inc",
i = "International Business Machines Corp."
});
scheduler.Flush();
}