public void Process_WithInvalidTrigger_ReturnsFailure()
{
// Arrange
var stateMachine = ExampleOrderStateMachine.Create();
// Act
var result = stateMachine.Process(new Trigger(OrderEvent.Working));
// Assert
Assert.True(result.IsFailure);
}
public void CurrentState_WithNewStateMachine_EqualsStartingState()
{
// Arrange
var stateMachine = ExampleOrderStateMachine.Create();
// Act
var result = stateMachine.CurrentState;
// Assert
Assert.Equal(new State(OrderStatus.Initialized), result);
}
public void Process_WithValidTrigger_ReturnsExpectedState()
{
// Arrange
var stateMachine = ExampleOrderStateMachine.Create();
// Act
var result = stateMachine.Process(new Trigger(OrderEvent.Accepted));
// Assert
Assert.True(result.IsSuccess);
Assert.Equal(new State(OrderStatus.Accepted), stateMachine.CurrentState);
}
public void Process_MultipleValidTriggersThenInvalidTrigger_ReturnsFailure()
{
// Arrange
var stateMachine = ExampleOrderStateMachine.Create();
// Act
stateMachine.Process(new Trigger(OrderEvent.Accepted));
stateMachine.Process(new Trigger(OrderEvent.Working));
stateMachine.Process(new Trigger(OrderEvent.PartiallyFilled));
var result = stateMachine.Process(new Trigger(OrderEvent.Expired));
// Assert
Assert.True(result.IsFailure);
Assert.Equal(new State(OrderStatus.PartiallyFilled), stateMachine.CurrentState);
}
public void Process_ThroughFullCycle_ReturnsExpectedState()
{
// Arrange
var stateMachine = ExampleOrderStateMachine.Create();
// Act
stateMachine.Process(new Trigger(OrderEvent.Accepted));
stateMachine.Process(new Trigger(OrderEvent.Working));
stateMachine.Process(new Trigger(OrderEvent.PartiallyFilled));
var result = stateMachine.Process(new Trigger(OrderEvent.Filled));
// Assert
Assert.True(result.IsSuccess);
Assert.Equal(new State(OrderStatus.Filled), stateMachine.CurrentState);
}