*/
class DaemonsStateCheckpoint {

    final DaemonsState expectedState
    private final Runnable[] actions

    DaemonsStateCheckpoint(DaemonsState expectedState, Runnable... actions) {
        this.expectedState = expectedState
        this.actions = actions
    }

    String toString() {
        "DaemonsStateCheckpoint{expectedState=$expectedState,actions=$actions}"
    }

class DaemonEventSequenceBuilder {

    int pollRegistryMs = 50
    final int stateTransitionTimeoutMs

    DaemonsState currentState = null
    List<Runnable> actions = []

    private final List<DaemonsStateCheckpoint> checkpoints = []

    int numDaemons = 1

    DaemonEventSequenceBuilder(int stateTransitionTimeoutMs) {
        this.stateTransitionTimeoutMs = stateTransitionTimeoutMs
    }

    private final int timeoutBetweenStateChangeMs
    private Date runStartedAt
    private Date lastStateChangeAt

    private final DaemonRegistry registry

    private final List<DaemonsStateCheckpoint> allCheckpoints
    private final List<DaemonsStateCheckpoint> remainingCheckpoints

    private DaemonsState lastDaemonsState = new DaemonsState(0, 0)