Struct FakeTextModel 

pub struct FakeTextModel { /* private fields */ }

An in-memory TextModel for module tests: records every Prompt it completed and answers according to its TextModelMode.

The mode is global by default and can be overridden per tier (FakeTextModel::set_mode_for), mirroring FakePush’s per-recipient override — the natural analogue, and the thing the port exists for: one test can wire the fast tier to a drafted reply and the strong tier to a refusal, and watch a module treat the two differently without either vendor being named.

A completion that answered NotConfigured or failed is not recorded, the same rule FakePush applies to a send — the recording means “the model answered”, and a caller that retried on Transient { .. } then sees one recorded prompt per attempt it got an answer for.

Implementations

impl FakeTextModel

pub fn new(mode: TextModelMode) -> Self

pub fn prompts(&self) -> Vec<Prompt>

Every prompt answered so far, in order. A completion that answered NotConfigured or failed is not recorded.

pub fn last(&self) -> Option<Prompt>

The most recent prompt answered.

pub fn set_mode(&self, mode: TextModelMode)

Switches the mode every tier without an override answers with (e.g. flip to NotConfigured mid-test).

pub fn set_mode_for(&self, tier: ModelTier, mode: TextModelMode)

Makes one tier answer with mode, whatever the global mode is — the fast tier drafting and the strong tier refusing, say.

pub fn clear_mode_for(&self, tier: ModelTier)

Drops one tier’s override, putting it back on the global mode.

pub fn mode_for(&self, tier: ModelTier) -> TextModelMode

The mode tier will answer with.

Trait Implementations

impl Clone for FakeTextModel

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for FakeTextModel

fn default() -> Self

Returns the “default value” for a type.

impl TextModel for FakeTextModel

fn complete<'life0, 'life1, 'async_trait>( &'life0 self, prompt: &'life1 Prompt, ) -> Pin<Box<dyn Future<Output = Result<Completion, TextModelError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Completes prompt.

fn supports(&self, _tier: ModelTier, capability: Capability) -> bool

Whether this adapter can do capability for a prompt routed to tier. Defaults to false: a model that has not opted in is refused a tools-bearing prompt by RoutingTextModel and run_tool_loop before it is ever called, rather than sent a request it would silently drop the tools from. An adapter that carries Capability::Tools or Capability::Images overrides this to answer true for it.

fn stream<'a>( &'a self, prompt: &'a Prompt, ) -> Pin<Box<dyn Stream<Item = Result<TextDelta, TextModelError>> + Send + 'a>>

Streams prompt as TextDeltas (issue #859). The default implementation makes one complete round trip — the same provider exchange, the same cost — and answers its result decomposed by completion_deltas, so an adapter written before this method existed streams without a change. An adapter whose provider streams natively overrides it; a caller cannot tell the difference except by timing (and by Completion::json, which only a buffered structured-output call can fill).