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Add timestamp unittest #15

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Merged
s-ludwig merged 2 commits into from
May 9, 2025
Merged

Add timestamp unittest #15

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d9e7d5a
Add unit test for the timestamp modifier.
s-ludwig May 9, 2025
1a4e731
Use a less complex definition of ObservableType.
s-ludwig May 9, 2025
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22 changes: 21 additions & 1 deletion source/observable/observable.d
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Original file line number Diff line number Diff line change
Expand Up @@ -137,7 +137,7 @@ static assert(isObservable!(ObservableSource!int));

/** Extracts the event tyoe of an observable.
*/
alias ObservableType(O) = typeof(O.Event.init.eventValue);
alias ObservableType(O) = TypeOf!(O.Event.Kind.event);


/** The fundamental source for generating observable events.
Expand Down Expand Up @@ -725,6 +725,7 @@ private struct ObserverNamedTypes(TYPES...)
`MonoTime` timestamp of the original occurrence of each event.
*/
auto timestamp(O)(ref O source)
if (isObservable!O)
{
import core.time : MonoTime;
alias T = ObservableType!O;
Expand All @@ -738,6 +739,25 @@ struct TimestampedEvent(T)
MonoTime timestamp;
}

unittest {
import core.time : MonoTime, seconds;
import vibe.core.core : runTask;

MonoTime now = MonoTime.currTime();

ObservableSource!int source;

runTask({
source.put(1);
source.close();
});

foreach (el; source.timestamp.subscribe) {
assert(el.event == 1);
assert(el.timestamp >= now && el.timestamp <= now + 1.seconds);
}
}


/** Forwards the events emitted by an observable with a fixed delay.
*/
Expand Down