Struct ScriptedServer 

pub struct ScriptedServer { /* private fields */ }

A scripted Gemini Live server, for testing a Live session offline.

ScriptedServer is a script of what the server says: model text, what it heard, tool calls, interruptions. play connects your fully configured Live builder to it over an in-memory transport and runs the script. Your tools, phases, extractors, watchers, governance and callbacks all run for real. What comes back is a ScriptedRun: the events the session emitted, what it sent to the “server” (setup, tool responses, context), and its state.

No network or credential is used, and the model is not involved. The script is its stand-in.

use gemini_adk_fluent_rs::prelude::*;
use gemini_adk_fluent_rs::testing::ScriptedServer;
use serde_json::json;

let run = ScriptedServer::new()
    .hears("What's the weather in Paris?")
    .calls("get_weather", json!({ "city": "Paris" }))
    .says("It is sunny in Paris.")
    .play(
        Live::builder()
            .instruction("You are a weather assistant.")
            .tools(T::simple("get_weather", "Weather for a city", |args| async move {
                Ok(json!({ "city": args["city"], "sky": "sunny" }))
            })),
    )
    .await
    .unwrap();

let responses = run.tool_responses();
assert_eq!(responses[0]["name"], "get_weather");
assert_eq!(responses[0]["response"]["sky"], "sunny");
assert!(run.transcript_text().contains("It is sunny"));
run.disconnect().await;

Implementations

impl ScriptedServer

pub fn new() -> Self

A script that starts with the setup handshake.

pub fn says(self, text: impl Into<String>) -> Self

The model says text and ends its turn.

pub fn text(self, text: impl Into<String>) -> Self

The model says text without ending its turn.

pub fn turn_complete(self) -> Self

The model ends its turn.

pub fn hears(self, text: impl Into<String>) -> Self

The server transcribes the user saying text.

pub fn speaks(self, text: impl Into<String>) -> Self

The server transcribes the model’s speech as text.

pub fn calls(self, name: impl Into<String>, args: Value) -> Self

The model calls tool name with args. Call ids are call-1, call-2, … in script order.

pub fn interrupts(self) -> Self

The user barges in: the server reports the model’s turn interrupted.

pub fn frame(self, message: Value) -> Self

Any raw server message, for what the helpers above do not cover.

pub fn settle_after(self, idle: Duration) -> Self

How long the session must stay quiet after the last frame before the run counts as settled (default 200 ms).

pub fn into_transport(self) -> (ReplayTransport, ReplayControl)

The script as an in-memory transport plus its control handle, for a test that drives the connection itself. Nothing past the handshake flows until ReplayControl::release.

pub async fn play(self, live: Live) -> Result<ScriptedRun, AgentError>

Connect live to this script, play every frame, and return once the session has settled: every scripted tool call that was not cancelled has been answered, and no event arrived for the settle_after window.

Trait Implementations

impl Clone for ScriptedServer

fn clone(&self) -> ScriptedServer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScriptedServer

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

Formats the value using the given formatter.

impl Default for ScriptedServer

fn default() -> Self

Returns the “default value” for a type.