public async Task Finally6()
{
string result = "";
bool rethrown = false;
try
{
await AsyncObservable.Empty <int>()
.Finally(() =>
{
result += "1";
throw new Exception();
})
.Finally(() =>
{
result += "2";
throw new Exception();
})
.SubscribeAsync();
}
catch
{
rethrown = true;
}
rethrown
.Should().Be(true);
result
.Should().Be("12");
}
public async Task Empty()
{
var value = await AsyncObservable.Empty <int>().AllAsync(i => false);
value
.Should().Be(true);
}
public async Task Empty()
{
var value = await AsyncObservable.Empty <int>().ToListAsync();
value
.Should().HaveCount(0);
}
public async Task Empty()
{
var value = await AsyncObservable.Empty <int>().AnyAsync();
value
.Should().Be(false);
}
public async Task EmptyWithPredicate()
{
var value = await AsyncObservable.Empty <int>().AnyAsync(i => i > 4);
value
.Should().Be(false);
}
public void Count0()
{
Func <Task <int> > func = async() => await AsyncObservable.Empty <int>().FirstAsync();
func
.Should().ThrowExactly <InvalidOperationException>();
}
public async Task Empty1()
{
string result = "";
await AsyncObservable.Empty <int>()
.SubscribeAsync(i => result += i, ex => result += "E", () => result += "C");
result
.Should().Be("C");
}
public async Task Int_Intermediate_Empty()
{
string result = "";
await AsyncObservable.Empty <int>()
.Max(intermediateResults: true)
.SubscribeAsync(i => result += i, onError: ex => result += "E", onCompleted: () => result += "C");
result
.Should().Be("E");
}
public async Task Double_Empty()
{
var result = "";
await AsyncObservable.Empty <double>()
.Max()
.SubscribeAsync(i => result += i, onError: ex => result += "E", onCompleted: () => result += "C");
result
.Should().Be("E");
}
public async Task Long_Empty()
{
string result = "";
await AsyncObservable.Empty <long>()
.Max()
.SubscribeAsync(i => result += i, onError: ex => result += "E", onCompleted: () => result += "C");
result
.Should().Be("E");
}
public async Task Double_Intermediate_Empty()
{
double result = Double.NaN;
await AsyncObservable.Empty <double>()
.Sum(intermediateResults: true)
.SubscribeAsync(i => result = i);
result
.Should().Be(Double.NaN);
}
public async Task Double_Empty()
{
double result = 0.0;
await AsyncObservable.Empty <double>()
.Sum()
.SubscribeAsync(i => result = i);
result
.Should().Be(0.0);
}
public async Task Int_Empty()
{
string result = "";
await AsyncObservable.Empty <int>()
.Sum()
.SubscribeAsync(i => result += i, onCompleted: () => result += "C");
result
.Should().Be("0C");
}
public async Task Empty()
{
string result = "";
await AsyncObservable.Empty <int>()
.DistinctUntilChanged()
.SubscribeAsync(i => result += i, onCompleted: () => result += "C");
result
.Should().Be("C");
}
public async Task Int_Nullable_Empty()
{
string result = "";
await AsyncObservable.Empty <int?>()
.Max()
.SubscribeAsync(i => result += i == null ? "null" : i.ToString(), onError: ex => result += "E", onCompleted: () => result += "C");
result
.Should().Be("nullC");
}
public async Task Finally3()
{
string result = "";
await AsyncObservable.Empty <int>()
.Finally(() => result += "1")
.Finally(() => result += "2")
.SubscribeAsync(i => result += "N", ex => result += "E", () => result += "C");
result
.Should().Be("12C");
}
public void ArgumentExceptions()
{
Func <Task> action;
action = async() => await default(IAsyncObservable <int>).AllAsync(i => true);
action
.Should().Throw <ArgumentNullException>();
action = async() => await AsyncObservable.Empty <int>().AllAsync(null);
action
.Should().Throw <ArgumentNullException>();
}
public void ArgumentExceptions()
{
Func <IDisposable> funcR = null;
Func <IDisposable, IAsyncObservable <int> > funcO = null;
Action action;
action = () => AsyncObservable.Using(funcR, _ => AsyncObservable.Empty <int>());
action
.Should().Throw <ArgumentNullException>();
action = () => AsyncObservable.Using(() => new BooleanDisposable(), funcO);
action
.Should().Throw <ArgumentNullException>();
action = () => AsyncObservable.Using(funcR, funcO);
action
.Should().Throw <ArgumentNullException>();
}