public void AddAutoForwardTransitionWRequest_throws_ArgumentNullException_if_Condition_null()
{
var stateMachine = new StateMachineAsync <Sale, SaleState, SaleEvent>(sale => sale.State, (sale, newState) => sale.State = newState);
var sut = new StateConfigurationAsync <Sale, SaleState, SaleEvent>(SaleState.ChangeDue, stateMachine);
Assert.Throws <ArgumentNullException>(() => sut.AddAutoForwardTransition <string>(SaleEvent.Pay, SaleState.Complete, condition: null));
}
public async Task ExecuteAutoTransitionAsync_executes_AutoTransition_without_previous_state()
{
var sale = new Sale(saleID: 96)
{
State = SaleState.ChangeDue
};
var transitionResult = new StateTransitionResult <SaleState, SaleEvent>(SaleEvent.Pay
, SaleState.Open
, SaleState.ChangeDue
, SaleState.ChangeDue
, "lastTransitionName");
var stateMachine = new StateMachineAsync <Sale, SaleState, SaleEvent>(sale1 => sale1.State, (sale1, newState) => sale1.State = newState);
var sut = new StateConfigurationAsync <Sale, SaleState, SaleEvent>(SaleState.ChangeDue, stateMachine);
sut.AddAutoForwardTransition(SaleEvent.ChangeGiven, SaleState.Complete, (sale1, _) => Task.FromResult(result: true));
var parameters = new ExecutionParameters <Sale, SaleEvent>(SaleEvent.ChangeGiven, sale);
var autoTransitionResult = await sut.ExecuteAutoTransitionAsync(parameters, transitionResult);
Assert.True(autoTransitionResult.WasTransitioned);
Assert.Equal(SaleState.Complete, sale.State);
Assert.Equal(SaleState.Complete, autoTransitionResult.CurrentState);
Assert.Equal(SaleState.ChangeDue, autoTransitionResult.PreviousState);
Assert.Equal(SaleState.Open, autoTransitionResult.StartingState);
}
public void ExecuteAutoTransitionAsync_can_be_cancelled()
{
var stopwatch = new Stopwatch();
var sale = new Sale(saleID: 96)
{
State = SaleState.ChangeDue
};
var transitionResult = new StateTransitionResult <SaleState, SaleEvent>(SaleEvent.Pay
, SaleState.ChangeDue
, SaleState.ChangeDue
, SaleState.ChangeDue
, "lastTransitionName");
var stateMachine = new StateMachineAsync <Sale, SaleState, SaleEvent>(sale1 => sale1.State, (sale1, newState) => sale1.State = newState);
var sut = new StateConfigurationAsync <Sale, SaleState, SaleEvent>(SaleState.ChangeDue, stateMachine);
sut.AddAutoForwardTransition(SaleEvent.ChangeGiven, SaleState.Complete, (sale1, cancelToken) =>
{
do
{
Task.Delay(millisecondsDelay: 99).Wait();
} while (!cancelToken.IsCancellationRequested);
return(Task.FromResult(result: !cancelToken.IsCancellationRequested));
});
using (var mutex = new Mutex(initiallyOwned: false))
using (var cancelSource = new CancellationTokenSource())
{
var parameters = new ExecutionParameters <Sale, SaleEvent>(SaleEvent.ChangeGiven, sale, cancelSource.Token);
StateTransitionResult <SaleState, SaleEvent> autoTransitionResult = null;
Task.Factory.StartNew(async() =>
{
mutex.WaitOne();
autoTransitionResult = await sut.ExecuteAutoTransitionAsync(parameters, transitionResult);
mutex.ReleaseMutex();
}, TaskCreationOptions.LongRunning);
try
{
stopwatch.Start();
Task.Delay(millisecondsDelay: 2345).Wait();
cancelSource.Cancel();
mutex.WaitOne();
}
catch (Exception ex)
{
cancelSource.Cancel();
}
Assert.True(autoTransitionResult.WasCancelled);
Assert.False(autoTransitionResult.ConditionMet);
Assert.True(autoTransitionResult.TransitionDefined);
Assert.Equal(SaleState.ChangeDue, sale.State);
Assert.Equal(SaleState.ChangeDue, autoTransitionResult.CurrentState);
}
}