Enum SessionState 

#[non_exhaustive]
pub enum SessionState {
    Healthy = 0,
    Degraded = 1,
    Cycling = 2,
    Dead = 3,
}

Top-level surface for test authors. Mirrors Playwright’s page deliberately — AI authoring quality is highest when names overlap with corpus the AI was trained on.

Every method is async — no chaining shortcuts, no fluent builder pattern. One step, one await, one observable side effect.

State of a runner-side session guard, exposed to consumers via Session::state. The runner’s X-Sim-Health response header drives transitions.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Healthy = 0

All observed signals inside envelope.

Degraded = 1

At least one signal degraded (screenshot slow, /health stale).

Cycling = 2

Runner is mid-cycle (supervisor auto-restart in progress).

Dead = 3

Runner or a watched subprocess (SimRenderServer / xcodebuild) is gone.

Implementations

impl SessionState

pub fn from_u8(v: u8) -> Self

Round-trip from the AtomicU8 storage; unknown wire values map to Healthy (optimistic) so a new future state doesn’t crash.

Trait Implementations

impl Clone for SessionState

fn clone(&self) -> SessionState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for SessionState

impl Debug for SessionState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for SessionState

impl Hash for SessionState

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for SessionState

fn eq(&self, other: &SessionState) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SessionState