public Hangman(string word)
{
HashSet <char> emptySetOfChars = new HashSet <char>();
var stateSubject = new BehaviorSubject <HangmanState>(new HangmanState(MaskedWord(word, emptySetOfChars), emptySetOfChars.ToImmutableHashSet(), MaxGuessCount));
StateObservable = stateSubject;
GuessObserver = Observer.Create <char>(x =>
{
HashSet <char> guessedChars = new HashSet <char>(stateSubject.Value.GuessedChars);
bool isHit = !guessedChars.Contains(x) && word.Contains(x);
guessedChars.Add(x);
string maskedWord = MaskedWord(word, guessedChars);
if (maskedWord == word)
{
stateSubject.OnCompleted();
}
else if (stateSubject.Value.RemainingGuesses < 1)
{
stateSubject.OnError(new TooManyGuessesException());
}
else
{
stateSubject.OnNext(new HangmanState(maskedWord, guessedChars.ToImmutableHashSet(),
isHit ? stateSubject.Value.RemainingGuesses : stateSubject.Value.RemainingGuesses - 1));
}
});
}
public void OnOuterError()
{
var lbs1 = new ListBehaviorSubject <int>();
lbs1.OnAdd(1);
lbs1.OnAdd(2);
var source = new BehaviorSubject <IObservableList <int> >(lbs1);
var list = new List <int>();
var completed = false;
Exception error = null;
var sub = source
.Switch()
.Subscribe(
Observer.Create <ListChange <int> >(
change => change.Apply(list),
e => error = e,
() => completed = true));
var ex = new Exception("AAAAAA");
source.OnError(ex);
Assert.AreEqual(ex, error);
Assert.IsFalse(completed);
sub.Dispose();
}
public void TestOnError()
{
var expectedOnNext = new List <int> {
7, 1, 10, 100
};
var onNext = new List <int>();
var exceptions = new List <Exception>();
var onCompletedCallCount = 0;
var subject = new BehaviorSubject <int>(7);
subject.Subscribe(x => onNext.Add(x), x => exceptions.Add(x), () => onCompletedCallCount++);
subject.OnNext(1);
subject.OnNext(10);
subject.OnNext(100);
Assert.That(onNext, Is.EqualTo(expectedOnNext));
Assert.That(exceptions, Has.Count.EqualTo(0));
Assert.That(onCompletedCallCount, Is.EqualTo(0));
subject.OnError(new Exception());
Assert.That(exceptions, Has.Count.EqualTo(1));
subject.OnNext(1);
subject.OnNext(10);
subject.OnNext(200);
Assert.That(onNext, Is.EqualTo(expectedOnNext));
Assert.That(onCompletedCallCount, Is.EqualTo(0));
}
private void OnNextGuess(char guess)
{
if (_state.Value.RemainingGuesses == 0)
{
_state.OnError(new TooManyGuessesException());
return;
}
var currentState = _state.Value;
var remaining = currentState.GuessedChars.Contains(guess) || !_word.Contains(guess)
? currentState.RemainingGuesses - 1
: currentState.RemainingGuesses;
var guessed = currentState.GuessedChars.Add(guess);
var masked = MaskWord(guessed);
if (masked == _word)
{
_state.OnCompleted();
}
else
{
_state.OnNext(new HangmanState(masked, guessed, remaining));
}
}
public override void OnError(Exception error)
{
if (_isDisposed)
{
throw error;
}
_subject.OnError(error);
}
public void Value_ThrowsAfterOnError()
{
var s = new BehaviorSubject <int>(42);
Assert.AreEqual(42, s.Value);
s.OnError(new InvalidOperationException());
Assert.Fail("Should not be able to read Value: {0}", s.Value);
}
public void Should_Invoke_OnError_On_Activator_Error()
{
var activator = new BehaviorSubject <bool>(false);
var source = new TestSubject();
var target = new ActivatedSubject(activator, source, string.Empty);
activator.OnError(new Exception());
Assert.NotNull(source.Error);
}
public void Should_Complete_When_Source_Observable_Errors()
{
var source = new BehaviorSubject <object>(1);
var target = new ExpressionObserver(source, "Foo");
var completed = false;
target.Subscribe(_ => { }, () => completed = true);
source.OnError(new Exception());
Assert.True(completed);
}
public void Should_Complete_When_Source_Observable_Errors()
{
var source = new BehaviorSubject<object>(1);
var target = new ExpressionObserver(source, "Foo");
var completed = false;
target.Subscribe(_ => { }, () => completed = true);
source.OnError(new Exception());
Assert.True(completed);
}
public void Should_Error_When_Activator_Errors()
{
var activator = new BehaviorSubject <bool>(false);
var target = new ActivatedValue(activator, 1, string.Empty);
var error = new Exception();
var completed = false;
target.Subscribe(_ => { }, x => completed = true);
activator.OnError(error);
Assert.True(completed);
}
public void replays_error_sequence()
{
BehaviorSubject <int> subject = new BehaviorSubject <int>(0);
StatsObserver <int> stats = new StatsObserver <int>();
subject.OnError(new Exception());
subject.Subscribe(stats);
Assert.IsTrue(stats.ErrorCalled);
}
public void Should_Error_When_Source_Errors()
{
var activator = new BehaviorSubject <bool>(false);
var source = new BehaviorSubject <object>(1);
var target = new ActivatedObservable(activator, source, string.Empty);
var error = new Exception();
var completed = false;
target.Subscribe(_ => { }, x => completed = true);
source.OnError(error);
Assert.True(completed);
}
public ReactiveAsyncAgent(
TState initialState,
Func <TState, TMessage, CancellationToken, Task <TState> > messageHandler,
Func <Exception, CancellationToken, Task <bool> > errorHandler)
{
if (initialState == null)
{
throw new ArgumentNullException(nameof(initialState));
}
if (messageHandler == null)
{
throw new ArgumentNullException(nameof(messageHandler));
}
if (errorHandler == null)
{
throw new ArgumentNullException(nameof(errorHandler));
}
_stateSubject = new BehaviorSubject <TState>(initialState);
_asyncAgent = new AsyncAgent <TState, TMessage>(
initialState: initialState,
messageHandler: async(state, msg, ct) =>
{
TState newState = state;
newState = await messageHandler(state, msg, ct);
if (!ct.IsCancellationRequested)
{
_stateSubject.OnNext(newState);
}
return(newState);
},
errorHandler: async(ex, ct) =>
{
bool shouldContinue = false;
shouldContinue = await errorHandler(ex, ct);
if (!shouldContinue && !ct.IsCancellationRequested)
{
_stateSubject.OnError(ex);
}
return(shouldContinue);
});
State = _stateSubject.AsObservable();
}
public void Should_Invoke_OnError_On_Activator_Error()
{
var activator = new BehaviorSubject <bool>(false);
var source = new TestSubject();
var target = new ActivatedSubject(activator, source, string.Empty);
var targetError = default(Exception);
var error = new Exception();
target.Subscribe(_ => { }, e => targetError = e);
activator.OnError(error);
Assert.Same(error, source.Error);
Assert.Same(error, targetError);
}
public async Task Start()
{
try
{
_stateSignal.OnNext(TestState.Running);
_output.OnNext("========================================\\");
_output.OnNext(Name);
if (FilePath.HasValue)
{
_output.OnNext(FilePath.Value.ToString());
}
Stopwatch sw = new Stopwatch();
sw.Start();
await _toDo(_output);
sw.Stop();
_output.OnNext("Passed");
_output.OnNext($"{sw.ElapsedMilliseconds / 1000d}s");
_output.OnNext("========================================/");
_stateSignal.OnNext(TestState.Complete);
if (_parallel)
{
await Task.WhenAll(_children.Select(c => Task.Run(c.Start)));
}
else
{
await Task.WhenAll(_children.Select(c => c.Start()));
}
_disposables.Dispose();
}
catch (Exception ex)
{
_stateSignal.OnError(ex);
while (ex != null)
{
_output.OnNext(ex.ToString());
ex = ex.InnerException;
}
_output.OnNext("Failed");
_output.OnNext("========================================/");
_stateSignal.OnNext(TestState.Error);
}
finally
{
_output.OnCompleted();
_stateSignal.OnCompleted();
}
}
public void replays_no_values_when_errored()
{
BehaviorSubject <int> subject = new BehaviorSubject <int>(0);
StatsObserver <int> stats = new StatsObserver <int>();
subject.OnNext(1);
subject.OnNext(2);
subject.OnNext(3);
subject.OnError(new Exception());
subject.Subscribe(stats);
Assert.AreEqual(0, stats.NextCount);
Assert.IsTrue(stats.ErrorCalled);
}
public void HasObservers_OnError()
{
var s = new BehaviorSubject <int>(42);
Assert.IsFalse(s.HasObservers);
var d = s.Subscribe(_ => { }, ex => { });
Assert.IsTrue(s.HasObservers);
s.OnNext(42);
Assert.IsTrue(s.HasObservers);
s.OnError(new Exception());
Assert.IsFalse(s.HasObservers);
}
public void errors_are_sent_through_scheduler()
{
ManualScheduler scheduler = new ManualScheduler();
BehaviorSubject <int> subject = new BehaviorSubject <int>(0, scheduler);
StatsObserver <int> stats = new StatsObserver <int>();
subject.OnError(new Exception());
subject.Subscribe(stats);
Assert.IsFalse(stats.ErrorCalled);
scheduler.RunNext();
Assert.IsTrue(stats.ErrorCalled);
}
public void errors_are_sent_through_scheduler()
{
ManualScheduler scheduler = new ManualScheduler();
BehaviorSubject<int> subject = new BehaviorSubject<int>(0, scheduler);
StatsObserver<int> stats = new StatsObserver<int>();
subject.OnError(new Exception());
subject.Subscribe(stats);
Assert.IsFalse(stats.ErrorCalled);
scheduler.RunNext();
Assert.IsTrue(stats.ErrorCalled);
}
public void Value_ThrowsAfterOnError()
{
var s = new BehaviorSubject <int>(42);
Assert.Equal(42, s.Value);
s.OnError(new InvalidOperationException());
ReactiveAssert.Throws <InvalidOperationException>(() =>
{
var ignored = s.Value;
});
ReactiveAssert.Throws <InvalidOperationException>(() =>
{
s.TryGetValue(out var x);
});
}
public async Task Observable_Current_propagates_exception()
{
var subject = new BehaviorSubject <int>(1);
var asyncEnumerable = subject.Current();
await using (var asyncEnumerator = asyncEnumerable.GetAsyncEnumerator())
{
subject.OnNext(1);
subject.OnNext(2);
subject.OnNext(3);
subject.OnError(new DivideByZeroException());
asyncEnumerator
.Awaiting(_ => _.MoveNextAsync().AsTask())
.Should()
.ThrowExactly <DivideByZeroException>();
}
}
public Hangman(string word)
{
var emptySet = new HashSet <char>();
var subject = new BehaviorSubject <HangmanState>(new HangmanState(
Mask(word, emptySet),
emptySet.ToImmutableHashSet(),
MaxGuesses
));
this.StateObservable = subject;
this.GuessObserver = Observer.Create <char>(ch =>
{
var guessedChars = new HashSet <char>(subject.Value.GuessedChars);
var remainingGuesses = subject.Value.RemainingGuesses;
if (!word.Contains(ch) || guessedChars.Contains(ch))
{
remainingGuesses--;
}
guessedChars.Add(ch);
var masked = Mask(word, guessedChars);
if (masked == word)
{
subject.OnCompleted();
}
else if (remainingGuesses < 0) // Game over
{
subject.OnError(new TooManyGuessesException());
}
else
{
subject.OnNext(new HangmanState(
masked,
guessedChars.ToImmutableHashSet(),
remainingGuesses
));
}
}
);
}
public async Task Observable_Current_propagates_exception()
{
var subject = new BehaviorSubject<int>(1);
var asyncEnumerable = subject.Current();
using (var asyncEnumerator = asyncEnumerable.GetEnumerator())
{
subject.OnNext(1);
subject.OnNext(2);
subject.OnNext(3);
subject.OnError(new InvalidOperationException());
asyncEnumerator
.Awaiting(_ => _.MoveNext(CancellationToken.None))
.ShouldThrowExactly<AggregateException>()
.Where(ex => ex.GetBaseException() is InvalidOperationException);
}
}
public void replays_no_values_when_errored()
{
BehaviorSubject<int> subject = new BehaviorSubject<int>(0);
StatsObserver<int> stats = new StatsObserver<int>();
subject.OnNext(1);
subject.OnNext(2);
subject.OnNext(3);
subject.OnError(new Exception());
subject.Subscribe(stats);
Assert.AreEqual(0, stats.NextCount);
Assert.IsTrue(stats.ErrorCalled);
}
public void BehaviorSubject()
{
// OnCompletedPattern
{
var subject = new BehaviorSubject<int>(3333);
var onNext = new List<int>();
var exception = new List<Exception>();
int onCompletedCallCount = 0;
var _ = subject.Subscribe(x => onNext.Add(x), x => exception.Add(x), () => onCompletedCallCount++);
onNext.IsCollection(3333);
subject.OnNext(1);
subject.OnNext(10);
subject.OnNext(100);
subject.OnNext(1000);
onNext.IsCollection(3333, 1, 10, 100, 1000);
// re subscription
onNext.Clear();
_.Dispose();
subject.Subscribe(x => onNext.Add(x), x => exception.Add(x), () => onCompletedCallCount++);
onNext.IsCollection(1000);
subject.OnCompleted();
onCompletedCallCount.Is(1);
subject.OnNext(1);
subject.OnNext(10);
subject.OnNext(100);
onNext.Count.Is(1);
subject.OnCompleted();
subject.OnError(new Exception());
exception.Count.Is(0);
onCompletedCallCount.Is(1);
// ++subscription
onNext.Clear();
onCompletedCallCount = 0;
subject.Subscribe(x => onNext.Add(x), x => exception.Add(x), () => onCompletedCallCount++);
onNext.Count.Is(0);
exception.Count.Is(0);
onCompletedCallCount.Is(1);
}
// OnErrorPattern
{
var subject = new BehaviorSubject<int>(3333);
var onNext = new List<int>();
var exception = new List<Exception>();
int onCompletedCallCount = 0;
subject.Subscribe(x => onNext.Add(x), x => exception.Add(x), () => onCompletedCallCount++);
subject.OnNext(1);
subject.OnNext(10);
subject.OnNext(100);
subject.OnNext(1000);
onNext.IsCollection(3333, 1, 10, 100, 1000);
subject.OnError(new Exception());
exception.Count.Is(1);
subject.OnNext(1);
subject.OnNext(10);
subject.OnNext(100);
onNext.Count.Is(5);
subject.OnCompleted();
subject.OnError(new Exception());
exception.Count.Is(1);
onCompletedCallCount.Is(0);
// ++subscription
onNext.Clear();
exception.Clear();
onCompletedCallCount = 0;
subject.Subscribe(x => onNext.Add(x), x => exception.Add(x), () => onCompletedCallCount++);
onNext.Count.Is(0);
exception.Count.Is(1);
onCompletedCallCount.Is(0);
}
}
public void HasObservers_OnError()
{
var s = new BehaviorSubject<int>(42);
Assert.IsFalse(s.HasObservers);
var d = s.Subscribe(_ => { }, ex => { });
Assert.IsTrue(s.HasObservers);
s.OnNext(42);
Assert.IsTrue(s.HasObservers);
s.OnError(new Exception());
Assert.IsFalse(s.HasObservers);
}
public void Value_ThrowsAfterOnError()
{
var s = new BehaviorSubject<int>(42);
Assert.AreEqual(42, s.Value);
s.OnError(new InvalidOperationException());
Assert.Fail("Should not be able to read Value: {0}", s.Value);
}
void IObserver <T> .OnError(Exception error) => subject.OnError(error);
public void Value_ThrowsAfterOnError()
{
var s = new BehaviorSubject<int>(42);
Assert.AreEqual(42, s.Value);
s.OnError(new InvalidOperationException());
ReactiveAssert.Throws<InvalidOperationException>(() =>
{
var ignored = s.Value;
});
ReactiveAssert.Throws<InvalidOperationException>(() =>
{
var x = default(int);
s.TryGetValue(out x);
});
}
public void replays_error_sequence()
{
BehaviorSubject<int> subject = new BehaviorSubject<int>(0);
StatsObserver<int> stats = new StatsObserver<int>();
subject.OnError(new Exception());
subject.Subscribe(stats);
Assert.IsTrue(stats.ErrorCalled);
}
public void BehaviorSubject()
{
// OnCompletedPattern
{
var subject = new BehaviorSubject <int>(3333);
var onNext = new List <int>();
var exception = new List <Exception>();
int onCompletedCallCount = 0;
var _ = subject.Subscribe(x => onNext.Add(x), x => exception.Add(x), () => onCompletedCallCount++);
onNext.Is(3333);
subject.OnNext(1);
subject.OnNext(10);
subject.OnNext(100);
subject.OnNext(1000);
onNext.Is(3333, 1, 10, 100, 1000);
// re subscription
onNext.Clear();
_.Dispose();
subject.Subscribe(x => onNext.Add(x), x => exception.Add(x), () => onCompletedCallCount++);
onNext.Is(1000);
subject.OnCompleted();
onCompletedCallCount.Is(1);
subject.OnNext(1);
subject.OnNext(10);
subject.OnNext(100);
onNext.Count.Is(1);
subject.OnCompleted();
subject.OnError(new Exception());
exception.Count.Is(0);
onCompletedCallCount.Is(1);
// ++subscription
onNext.Clear();
onCompletedCallCount = 0;
subject.Subscribe(x => onNext.Add(x), x => exception.Add(x), () => onCompletedCallCount++);
onNext.Count.Is(0);
exception.Count.Is(0);
onCompletedCallCount.Is(1);
}
// OnErrorPattern
{
var subject = new BehaviorSubject <int>(3333);
var onNext = new List <int>();
var exception = new List <Exception>();
int onCompletedCallCount = 0;
subject.Subscribe(x => onNext.Add(x), x => exception.Add(x), () => onCompletedCallCount++);
subject.OnNext(1);
subject.OnNext(10);
subject.OnNext(100);
subject.OnNext(1000);
onNext.Is(3333, 1, 10, 100, 1000);
subject.OnError(new Exception());
exception.Count.Is(1);
subject.OnNext(1);
subject.OnNext(10);
subject.OnNext(100);
onNext.Count.Is(5);
subject.OnCompleted();
subject.OnError(new Exception());
exception.Count.Is(1);
onCompletedCallCount.Is(0);
// ++subscription
onNext.Clear();
exception.Clear();
onCompletedCallCount = 0;
subject.Subscribe(x => onNext.Add(x), x => exception.Add(x), () => onCompletedCallCount++);
onNext.Count.Is(0);
exception.Count.Is(1);
onCompletedCallCount.Is(0);
}
}
public void OnError(Exception error)
{
_subject.OnError(error);
}