public StateMachine(StateMachineConfiguration configuration)
{
if (configuration == null)
{
throw new ArgumentNullException("configuration");
}
Configuration = configuration;
}
public void StateMachine_ValidConfigPassed_SetsConfigAsCurrentConfig()
{
var config = new StateMachineConfiguration { RaiseExceptionOnTriggerMatchingNoTransition = true };
var machine = new StateMachine<StubStateModel>(config);
Assert.Same(config, machine.Configuration);
Assert.True(machine.Configuration.RaiseExceptionOnTriggerMatchingNoTransition);
}
public void FluentStateMachineBuilder_CompileConfig_ReturnsNewStateMachineWithDefinedParts_WithConfig()
{
var builder = new FluentStateMachineBuilder<StubStateModel>();
builder.State("s1", null);
builder.Initiates();
var config = new StateMachineConfiguration { RaiseExceptionBeforeTransitionToSameState = true };
var machine = builder.Compile(config);
Assert.NotNull(machine);
Assert.Same(config, machine.Configuration);
Assert.Equal(true, machine.Configuration.RaiseExceptionBeforeTransitionToSameState);
}
public void StateMachine_Trigger_TransitionsToSameState_ConfigRaiseOnSameStateTranFalse_ThrowsInvalidTrigger()
{
var config = new StateMachineConfiguration { RaiseExceptionBeforeTransitionToSameState = false };
var machine = new StateMachine<StubStateModel>(config);
var model = new StubStateModel();
var trigger1 = new Trigger("trigger1");
var state1 = new State<StubStateModel>("state1");
var state2 = new State<StubStateModel>("state2");
state1.AddTransition(trigger1, state1);
model.CurrentState = state1;
// set up scenario where state would transition from current to same state.
// so no true transition would not occur
// should not throw exception and that's good enough for us
machine.Trigger(trigger1, model);
}
public void StateMachine_Trigger_TransitionsToSameState_ConfigRaiseOnSameStateTranTrue_ThrowsInvalidTrigger()
{
var config = new StateMachineConfiguration { RaiseExceptionBeforeTransitionToSameState = true };
var machine = new StateMachine<StubStateModel>(config);
var model = new StubStateModel();
var trigger1 = new Trigger("trigger1");
var state1 = new State<StubStateModel>("state1");
var state2 = new State<StubStateModel>("state2");
state1.AddTransition(trigger1, state1);
model.CurrentState = state1;
// set up scenario where state would transition from current to same state.
// so no true transition would not occur
Assert.Throws<InvalidTriggerException>(() =>
machine.Trigger(trigger1, model));
}
public void StateMachine_Trigger_TransitionFromCurrentToSame_ConfiggedNotToRaiseExcep_DoesNotRaiseTransitionChangeEvents()
{
var config = new StateMachineConfiguration { RaiseExceptionBeforeTransitionToSameState = false };
var machine = new StateMachine<StubStateModel>(config);
var model = new StubStateModel();
var trigger1 = new Trigger("trigger1");
var state1 = new State<StubStateModel>("state1");
TransitionEventArgs<StubStateModel> transitioningArgs = null;
state1.Entered += (s, e) => { transitioningArgs = e; };
TransitionEventArgs<StubStateModel> transitionedArgs = null;
state1.Exiting += (s, e) => { transitionedArgs = e; };
state1.AddTransition(trigger1, state1);
model.CurrentState = state1;
// set up scenario where state would transition from current to same state.
// so no true transition would not occur
// should not throw exception and that's good enough for us
machine.Trigger(trigger1, model);
// verify that no transition events occurred
Assert.Null(transitioningArgs);
Assert.Null(transitionedArgs);
}
public void StateMachine_Trigger_NoStateOrGlobalTransOnTrigger_ConfigRaiseOnNoTransTrue_ThrowsInvalidTrigger()
{
var config = new StateMachineConfiguration { RaiseExceptionOnTriggerMatchingNoTransition = true };
var machine = new StateMachine<StubStateModel>(config);
var model = new StubStateModel();
var trigger1 = new Trigger("trigger1");
var trigger2 = new Trigger("trigger2");
var state1 = new State<StubStateModel>("state1");
var state2 = new State<StubStateModel>("state2");
state1.AddTransition(trigger1, state2);
model.CurrentState = state1;
// set up so that current state of state 1 doesn't' define a trans for "trigger2", only "trigger1"
Assert.Throws<InvalidTriggerException>(() =>
machine.Trigger(trigger2, model));
}
public void StateMachine_Trigger_NoStateOrGlobalTransOnTrigger_ConfigRaiseOnNoTransFalse_NotThrowsInvalidTrigger()
{
var config = new StateMachineConfiguration { RaiseExceptionOnTriggerMatchingNoTransition = false };
var machine = new StateMachine<StubStateModel>(config);
var model = new StubStateModel();
var trigger1 = new Trigger("trigger1");
var trigger2 = new Trigger("trigger2");
var state1 = new State<StubStateModel>("state1");
var state2 = new State<StubStateModel>("state2");
state1.AddTransition(trigger1, state2);
model.CurrentState = state1;
// no exception shoudl happen, and that's good enough for us.
machine.Trigger(trigger2, model);
}
public void StateMachine_Trigger_NoPassingTransitionOnTrigger_ConfigRaiseOnNoPassingTranTrue_ThrowsInvalidTrigger()
{
var config = new StateMachineConfiguration { RaiseExceptionOnTriggerMatchingNoPassingTransition = true };
var machine = new StateMachine<StubStateModel>(config);
var model = new StubStateModel();
var trigger1 = new Trigger("trigger1");
var state1 = new State<StubStateModel>("state1");
var state2 = new State<StubStateModel>("state2");
state1.AddTransition(trigger1, state2, m => 1 == 2);
model.CurrentState = state1;
// set up so that there's a matching transition, but the guard would fail when run
Assert.Throws<InvalidTriggerException>(() =>
machine.Trigger(trigger1, model));
}
public void StateMachine_Trigger_NoPassingTransitionOnTrigger_ConfigRaiseOnNoPassingTranFalse_ThrowsInvalidTrigger()
{
var config = new StateMachineConfiguration { RaiseExceptionOnTriggerMatchingNoPassingTransition = false };
var machine = new StateMachine<StubStateModel>(config);
var model = new StubStateModel();
var trigger1 = new Trigger("trigger1");
var state1 = new State<StubStateModel>("state1");
var state2 = new State<StubStateModel>("state2");
state1.AddTransition(trigger1, state2, m => 1 == 2);
model.CurrentState = state1;
// set up so that there's a matching transition, but the guard would fail when run
// no exceptions should happen, and that's good enough for us
machine.Trigger(trigger1, model);
}