microde-application 0.4.0

Composition and lifecycle runtime for modular Microde applications.
Documentation 
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/// Describes whether a module completes independently or requires a stop.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum ModuleKind {
    Passive,
    Active,
}

/// The observable lifecycle state of a application.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum MicrodeApplicationState {
    Idle,
    Installing,
    Initialization,
    Setup,
    Running,
    TearDown,
    Shutdown,
    CleanUp,
    Finished,
    Failed,
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn module_kinds_are_distinct_copyable_values() {
        let passive = ModuleKind::Passive;
        let copied = passive;

        assert_eq!(passive, copied);
        assert_ne!(passive, ModuleKind::Active);
        assert_eq!(format!("{passive:?}"), "Passive");
    }

    #[test]
    fn lifecycle_states_preserve_the_runtime_vocabulary() {
        let states = [
            MicrodeApplicationState::Idle,
            MicrodeApplicationState::Installing,
            MicrodeApplicationState::Initialization,
            MicrodeApplicationState::Setup,
            MicrodeApplicationState::Running,
            MicrodeApplicationState::TearDown,
            MicrodeApplicationState::Shutdown,
            MicrodeApplicationState::CleanUp,
            MicrodeApplicationState::Finished,
            MicrodeApplicationState::Failed,
        ];

        assert_eq!(states.len(), 10);
        assert_eq!(states[0], MicrodeApplicationState::Idle);
        assert_eq!(states[9], MicrodeApplicationState::Failed);
    }
}