public async Task Count1()
{
var value = await AsyncObservable.Return(1).FirstAsync();
value
.Should().Be(1);
}
public async Task Return1()
{
string result = "";
await AsyncObservable.Return(1)
.SubscribeAsync(i => result += i, ex => result += "E", () => result += "C");
result
.Should().Be("1C");
}
public async Task Select1()
{
string result = "";
await AsyncObservable.Return(Unit.Default)
.SelectMany(_ => Enumerable.Range(0, 10))
.SubscribeAsync(i => result += i, onCompleted: () => result += "C");
result
.Should().Be("0123456789C");
}
public async Task Finally4()
{
string result = "";
await AsyncObservable.Return(1)
.Finally(() => result += "1")
.Finally(() => result += "2")
.SubscribeAsync(i => result += "N", ex => result += "E", () => result += "C");
result
.Should().Be("N12C");
}
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 Single()
{
string result = "";
var range = AsyncObservable.Range(0, 3);
await AsyncObservable.Return(range.Finally(() => result += "f"))
.LazyConcat()
.Finally(() => result += "F")
.SubscribeAsync(i => result += i, ex => result += "E", () => result += "C");
result
.Should().Be("012fFC");
}
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");
}
static async Task ReturnAsync()
{
await AsyncObservable.Return(42).SubscribeAsync(Print <int>());
}
public async Task Using1()
{
var result = "";
await AsyncObservable.Using(() => Disposable.Create(() => result += "3"),
_ => AsyncObservable.Using(() => Disposable.Create(() => result += "2"),
__ => AsyncObservable.Using(() => Disposable.Create(() => result += "1"),
___ => AsyncObservable.Return(Unit.Default))))
.Finally(() => result += "4")
.SubscribeAsync(i => result += "N", ex => result += "E", () => result += "C");
result
.Should().Be("NC1234");
}