public void GetAvailableEvents_WhenValidState_ReturnsAvailableEvents(
string currentState, string[] expectedEvents)
{
var sut = new StateMachine(GetTestTransitionTable());
IEnumerable<string> result = sut.GetAvailableEvents(currentState);
Assert.Equal(expectedEvents, result.ToArray());
}
public void GetAvailableEvents_WhenInvalidState_Throws()
{
var sut = new StateMachine(GetTestTransitionTable());
var ex = Assert.Throws<InvalidOperationException>(
() => sut.GetAvailableEvents("Bogus"));
Assert.Equal("Invalid state: 'Bogus'.", ex.Message);
}
public void GetAvailableEvents_WhenTerminalState_ReturnsEmpty()
{
const string TerminalState = "Terminal";
var transitionTable =
new List<Transition>
{
new Transition("Whatever", "something", TerminalState)
};
var sut = new StateMachine(transitionTable);
IEnumerable<string> result = sut.GetAvailableEvents(TerminalState);
Assert.Empty(result);
}
public void GetAvailableEvents_WhenCurrentStateIsNull_Throws()
{
var sut = new StateMachine(GetTestTransitionTable());
Assert.Throws<ArgumentNullException>(
() => sut.GetAvailableEvents(null));
}
