rho-coding-agent 2.14.0

A fast Rust agent harness with a small footprint and opinionated defaults
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use std::sync::Arc;

use pretty_assertions::assert_eq;
use rho_providers::model::{ModelMetadata, ReasoningRequestSource};
use rho_sdk::{
    model::{
        context::estimate_context_tokens, ContentBlock, ContextUsage, ModelEvent, ModelIdentity,
        ModelResponse, ModelUsage,
    },
    provider::{ScriptedProvider, ScriptedTurn},
    ReasoningLevel, UserInput,
};
use tokio::sync::oneshot;

use crate::{app::interactive_runtime::test_runtime, tui::tests::test_app};

// Covers: deferred, unchanged metadata discards a successful provider baseline,
// or a no-op guard prevents a genuine reasoning change from being installed.
// Owner: host metadata/session lifecycle. Inject completion in-process because
// PTY cannot control the catalog task without adding a production test hook;
// calibrated_context_auto_compact owns the visible next-prompt compact behavior.
#[tokio::test]
async fn deferred_metadata_preserves_context_unless_reasoning_changes() {
    for effective in [ReasoningLevel::Low, ReasoningLevel::High] {
        let mut app = test_app();
        let provider = ScriptedProvider::new(
            ModelIdentity::new("openai", "openai-responses", "gpt-5.5"),
            [ScriptedTurn::streaming(
                vec![ModelEvent::Usage(ModelUsage {
                    input_tokens: Some(100_000),
                    ..ModelUsage::default()
                })],
                ModelResponse::Assistant(vec![ContentBlock::Text("done".into())]),
            )],
        );
        let mut agent = test_runtime(Vec::new()).await;
        agent
            .replace_provider(Arc::new(provider), ReasoningLevel::Low, "api-key")
            .unwrap();
        agent.set_context_window(Some(131_072)).unwrap();

        let metadata = ModelMetadata {
            usable_context_window: Some(131_072),
            supported_reasoning_levels: Some(vec![effective]),
            reasoning_capabilities_known: true,
            reasoning_metadata_complete: true,
            ..ModelMetadata::default()
        };
        let (release, fetched) = oneshot::channel();
        let (finished, completion) = oneshot::channel();
        app.pending_model_metadata = Some(tokio::spawn(async move {
            let metadata = fetched.await.unwrap();
            // No await after this signal: the current-thread executor finishes
            // this task before the test can observe the queued result.
            finished.send(()).unwrap();
            Some(metadata)
        }));
        app.pending_model_metadata_reasoning = Some((
            ReasoningLevel::Low,
            ReasoningRequestSource::PersistedOrDefault,
        ));

        agent.start(UserInput::text("work"), None).await.unwrap();
        release.send(metadata.clone()).unwrap();
        completion.await.unwrap();
        assert!(app.pending_model_metadata.as_ref().unwrap().is_finished());
        app.poll_model_metadata_fetch(&mut agent).await;
        assert!(app.pending_model_metadata.is_some());
        assert_eq!(app.model_metadata, None);

        agent.finish_run().await.unwrap();
        let calibrated = agent.take_context_usage().unwrap();
        assert!(calibrated.tokens.unwrap() >= 100_000);
        let history = agent.history();

        app.poll_model_metadata_fetch(&mut agent).await;

        let expected_context = if effective == ReasoningLevel::Low {
            calibrated
        } else {
            assert_eq!(
                app.info
                    .services
                    .config_repository
                    .load()
                    .unwrap()
                    .reasoning,
                effective
            );
            ContextUsage::estimated(
                estimate_context_tokens(&history, &[]),
                calibrated.context_window,
            )
        };
        assert!(app.pending_model_metadata.is_none());
        assert_eq!(app.model_metadata, Some(metadata));
        assert_eq!(app.info.runtime.reasoning, effective);
        assert_eq!(agent.history(), history);
        assert_eq!(agent.take_context_usage(), Some(expected_context));
    }
}