public void AsyncWithoutSubscription()
{
var called = 0;
AsyncObservable.Defer(() =>
{
Interlocked.Increment(ref called);
return(new ValueTask <IAsyncObservable <int> >(AsyncObservable.Return(1)));
});
called
.Should().Be(0);
}
public async Task WithException2()
{
var result = default(Exception);
await AsyncObservable.Defer(delegate()
{
throw new NotImplementedException();
return(AsyncObservable.Return(1));
})
.SubscribeAsync(onError: ex => result = ex);
result
.Should().BeOfType <NotImplementedException>();
}
public async Task WithSubscription()
{
var result = "";
var called = 0;
await AsyncObservable.Defer(() =>
{
Interlocked.Increment(ref called);
return(AsyncObservable.Return(1));
})
.SubscribeAsync(o => result += o, ex => result += "E", () => result += "C");
called
.Should().Be(1);
result
.Should().Be("1C");
}
public async Task WithException()
{
var result = "";
var called = 0;
await AsyncObservable.Defer(delegate()
{
Interlocked.Increment(ref called);
throw new NotImplementedException();
return(AsyncObservable.Return(1));
})
.SubscribeAsync(o => result += o, ex => result += "E", () => result += "C");
called
.Should().Be(1);
result
.Should().Be("E");
}