Enum ReplayStrategy 

pub enum ReplayStrategy {
    Fifo,
    ByToolName,
    Exact,
}

Replay strategy: decides which recording a request takes in concurrent/out-of-order scenarios.

Variants

Fifo

Concurrent FIFO: pops in recording order, atomic pop has no UB, but “which request gets which response” is not deterministic.

Suits serial/order-stable chains; parallel scenarios use order-independent assertions (only assert that replay is fully drained and each response is structurally non-empty), never “the Nth response is tool A’s”.

ByToolName

Routes by tool name: tools carry a name when bound (bind_tools), replay picks the first recording in the queue whose tool name matches (request-side exchange.tools or response-side tool_calls).

Covers parallel scenarios where “different tools return different responses and need exact correspondence” — each parallel branch binds its own tool and gets its own correct response. Weaker than full message-signature matching, but reproducible.

Exact

Matches the request messages by full signature: the request messages must be element-wise exactly equal to exchange.messages (Message’s PartialEq over all fields, including content / message_type / name / additional_kwargs / tool_calls).

Under parallel out-of-order traffic each request exactly gets its own response; a recording with no match returns an explicit TestkitError::ReplayNoMatch, never a silent FIFO fallback (which would disguise “wrong response” as success). Suits deterministic replays where “the same message sequence always reproduces the same response” — any field drift between the recording and the request (e.g. a runtime-assigned id that differs each time) counts as no-match, so fixtures must keep those fields stable.

Trait Implementations

impl Clone for ReplayStrategy

fn clone(&self) -> ReplayStrategy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ReplayStrategy

impl Debug for ReplayStrategy

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

Formats the value using the given formatter.

impl Default for ReplayStrategy

fn default() -> ReplayStrategy

Returns the “default value” for a type.

impl Eq for ReplayStrategy

impl PartialEq for ReplayStrategy

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ReplayStrategy