codex/codex-rs/core/src/thread_manager_tests.rs

use super::*;
use crate::config::test_config;
use crate::init_state_db;
use crate::installation_id::INSTALLATION_ID_FILENAME;
use crate::rollout::RolloutRecorder;
use crate::session::session::SessionSettingsUpdate;
use crate::session::tests::make_session_and_context;
use crate::tasks::InterruptedTurnHistoryMarker;
use crate::tasks::interrupted_turn_history_marker;
use codex_extension_api::empty_extension_registry;
use codex_features::Feature;
use codex_models_manager::manager::RefreshStrategy;
use codex_protocol::models::ContentItem;
use codex_protocol::models::ReasoningItemReasoningSummary;
use codex_protocol::models::ResponseItem;
use codex_protocol::openai_models::ModelsResponse;
use codex_protocol::protocol::AgentMessageEvent;
use codex_protocol::protocol::InitialHistory;
use codex_protocol::protocol::InternalSessionSource;
use codex_protocol::protocol::ResumedHistory;
use codex_protocol::protocol::SessionSource;
use codex_protocol::protocol::ThreadSource;
use codex_protocol::protocol::TurnStartedEvent;
use codex_protocol::protocol::UserMessageEvent;
use codex_protocol::user_input::UserInput;
use core_test_support::PathBufExt;
use core_test_support::PathExt;
use core_test_support::responses::mount_models_once;
use pretty_assertions::assert_eq;
use std::time::Duration;
use tempfile::tempdir;
use wiremock::MockServer;

const TEST_INSTALLATION_ID: &str = "11111111-1111-4111-8111-111111111111";

fn user_msg(text: &str) -> ResponseItem {
    ResponseItem::Message {
        id: None,
        role: "user".to_string(),
        content: vec![ContentItem::OutputText {
            text: text.to_string(),
        }],
        phase: None,
    }
}
fn assistant_msg(text: &str) -> ResponseItem {
    ResponseItem::Message {
        id: None,
        role: "assistant".to_string(),
        content: vec![ContentItem::OutputText {
            text: text.to_string(),
        }],
        phase: None,
    }
}

fn contextual_user_interrupted_marker() -> ResponseItem {
    interrupted_turn_history_marker(InterruptedTurnHistoryMarker::ContextualUser)
        .expect("contextual-user interrupted marker should be enabled")
}

fn developer_interrupted_marker() -> ResponseItem {
    interrupted_turn_history_marker(InterruptedTurnHistoryMarker::Developer)
        .expect("developer interrupted marker should be enabled")
}

#[test]
fn truncates_before_requested_user_message() {
    let items = [
        user_msg("u1"),
        assistant_msg("a1"),
        assistant_msg("a2"),
        user_msg("u2"),
        assistant_msg("a3"),
        ResponseItem::Reasoning {
            id: "r1".to_string(),
            summary: vec![ReasoningItemReasoningSummary::SummaryText {
                text: "s".to_string(),
            }],
            content: None,
            encrypted_content: None,
        },
        ResponseItem::FunctionCall {
            id: None,
            call_id: "c1".to_string(),
            name: "tool".to_string(),
            namespace: None,
            arguments: "{}".to_string(),
        },
        assistant_msg("a4"),
    ];

    let initial: Vec<RolloutItem> = items
        .iter()
        .cloned()
        .map(RolloutItem::ResponseItem)
        .collect();
    let truncated = truncate_before_nth_user_message(
        InitialHistory::Forked(initial),
        /*n*/ 1,
        &SnapshotTurnState {
            ends_mid_turn: false,
            active_turn_id: None,
            active_turn_start_index: None,
        },
    );
    let got_items = truncated.get_rollout_items();
    let expected_items = vec![
        RolloutItem::ResponseItem(items[0].clone()),
        RolloutItem::ResponseItem(items[1].clone()),
        RolloutItem::ResponseItem(items[2].clone()),
    ];
    assert_eq!(
        serde_json::to_value(&got_items).unwrap(),
        serde_json::to_value(&expected_items).unwrap()
    );

    let initial2: Vec<RolloutItem> = items
        .iter()
        .cloned()
        .map(RolloutItem::ResponseItem)
        .collect();
    let truncated2 = truncate_before_nth_user_message(
        InitialHistory::Forked(initial2.clone()),
        /*n*/ 2,
        &SnapshotTurnState {
            ends_mid_turn: false,
            active_turn_id: None,
            active_turn_start_index: None,
        },
    );
    assert_eq!(
        serde_json::to_value(truncated2.get_rollout_items()).unwrap(),
        serde_json::to_value(initial2).unwrap()
    );
}

#[test]
fn out_of_range_truncation_drops_only_unfinished_suffix_mid_turn() {
    let items = vec![
        RolloutItem::ResponseItem(user_msg("u1")),
        RolloutItem::ResponseItem(assistant_msg("a1")),
        RolloutItem::ResponseItem(user_msg("u2")),
        RolloutItem::ResponseItem(assistant_msg("partial")),
    ];

    let truncated = truncate_before_nth_user_message(
        InitialHistory::Forked(items.clone()),
        usize::MAX,
        &SnapshotTurnState {
            ends_mid_turn: true,
            active_turn_id: None,
            active_turn_start_index: None,
        },
    );

    assert_eq!(
        serde_json::to_value(truncated.get_rollout_items()).unwrap(),
        serde_json::to_value(items[..2].to_vec()).unwrap()
    );
}

#[test]
fn fork_thread_accepts_legacy_usize_snapshot_argument() {
    fn assert_legacy_snapshot_callsite(
        manager: &ThreadManager,
        config: Config,
        path: std::path::PathBuf,
    ) {
        let _future = manager.fork_thread(
            usize::MAX,
            config,
            path,
            /*thread_source*/ None,
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        );
    }

    let _: fn(&ThreadManager, Config, std::path::PathBuf) = assert_legacy_snapshot_callsite;
}

#[test]
fn out_of_range_truncation_drops_pre_user_active_turn_prefix() {
    let items = vec![
        RolloutItem::ResponseItem(user_msg("u1")),
        RolloutItem::ResponseItem(assistant_msg("a1")),
        RolloutItem::EventMsg(EventMsg::TurnStarted(TurnStartedEvent {
            turn_id: "turn-2".to_string(),
            started_at: None,
            model_context_window: None,
            collaboration_mode_kind: Default::default(),
        })),
        RolloutItem::ResponseItem(user_msg("u2")),
        RolloutItem::ResponseItem(assistant_msg("partial")),
    ];

    let snapshot_state = snapshot_turn_state(&InitialHistory::Forked(items.clone()));
    assert_eq!(
        snapshot_state,
        SnapshotTurnState {
            ends_mid_turn: true,
            active_turn_id: Some("turn-2".to_string()),
            active_turn_start_index: Some(2),
        },
    );

    let truncated = truncate_before_nth_user_message(
        InitialHistory::Forked(items.clone()),
        usize::MAX,
        &snapshot_state,
    );

    assert_eq!(
        serde_json::to_value(truncated.get_rollout_items()).unwrap(),
        serde_json::to_value(items[..2].to_vec()).unwrap()
    );
}

#[tokio::test]
async fn ignores_session_prefix_messages_when_truncating() {
    let (session, turn_context) = make_session_and_context().await;
    let mut items = session.build_initial_context(&turn_context).await;
    items.push(user_msg("feature request"));
    items.push(assistant_msg("ack"));
    items.push(user_msg("second question"));
    items.push(assistant_msg("answer"));

    let rollout_items: Vec<RolloutItem> = items
        .iter()
        .cloned()
        .map(RolloutItem::ResponseItem)
        .collect();

    let truncated = truncate_before_nth_user_message(
        InitialHistory::Forked(rollout_items),
        /*n*/ 1,
        &SnapshotTurnState {
            ends_mid_turn: false,
            active_turn_id: None,
            active_turn_start_index: None,
        },
    );
    let got_items = truncated.get_rollout_items();

    let expected: Vec<RolloutItem> = vec![
        RolloutItem::ResponseItem(items[0].clone()),
        RolloutItem::ResponseItem(items[1].clone()),
        RolloutItem::ResponseItem(items[2].clone()),
        RolloutItem::ResponseItem(items[3].clone()),
    ];

    assert_eq!(
        serde_json::to_value(&got_items).unwrap(),
        serde_json::to_value(&expected).unwrap()
    );
}

#[tokio::test]
async fn shutdown_all_threads_bounded_submits_shutdown_to_every_thread() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let manager = ThreadManager::with_models_provider_and_home_for_tests(
        CodexAuth::from_api_key("dummy"),
        config.model_provider.clone(),
        config.codex_home.to_path_buf(),
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
    );
    let thread_1 = manager
        .start_thread(config.clone())
        .await
        .expect("start first thread")
        .thread_id;
    let thread_2 = manager
        .start_thread(config.clone())
        .await
        .expect("start second thread")
        .thread_id;

    let report = manager
        .shutdown_all_threads_bounded(Duration::from_secs(10))
        .await;

    let mut expected_completed = vec![thread_1, thread_2];
    expected_completed.sort_by_key(std::string::ToString::to_string);
    assert_eq!(report.completed, expected_completed);
    assert!(report.submit_failed.is_empty());
    assert!(report.timed_out.is_empty());
    assert!(manager.list_thread_ids().await.is_empty());
}

#[tokio::test]
async fn start_thread_rejects_explicit_local_environment_when_default_provider_is_disabled() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let runtime_paths = codex_exec_server::ExecServerRuntimePaths::new(
        std::env::current_exe().expect("current exe path"),
        /*codex_linux_sandbox_exe*/ None,
    )
    .expect("runtime paths");
    let environment_manager = Arc::new(
        codex_exec_server::EnvironmentManager::create_for_tests(
            Some("none".to_string()),
            runtime_paths,
        )
        .await,
    );
    let manager = ThreadManager::with_models_provider_and_home_for_tests(
        CodexAuth::from_api_key("dummy"),
        config.model_provider.clone(),
        config.codex_home.to_path_buf(),
        environment_manager,
    );

    let result = manager
        .start_thread_with_options(StartThreadOptions {
            config: config.clone(),
            initial_history: InitialHistory::New,
            session_source: None,
            thread_source: None,
            dynamic_tools: Vec::new(),
            persist_extended_history: false,
            metrics_service_name: None,
            parent_trace: None,
            environments: vec![TurnEnvironmentSelection {
                environment_id: "local".to_string(),
                cwd: config.cwd.clone(),
            }],
        })
        .await;
    let err = match result {
        Ok(_) => panic!("explicit local environment should not resolve when provider is disabled"),
        Err(err) => err,
    };

    assert_eq!(err.to_string(), "unknown turn environment id `local`");
    assert!(manager.list_thread_ids().await.is_empty());
}

#[tokio::test]
async fn start_thread_uses_all_default_environments_from_codex_home() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");
    std::fs::write(
        config.codex_home.join("environments.toml"),
        r#"
default = "dev"

[[environments]]
id = "dev"
program = "ssh"
args = ["dev", "cd /tmp && true"]
"#,
    )
    .expect("write environments.toml");

    let runtime_paths = codex_exec_server::ExecServerRuntimePaths::new(
        std::env::current_exe().expect("current exe path"),
        /*codex_linux_sandbox_exe*/ None,
    )
    .expect("runtime paths");
    let environment_manager = Arc::new(
        codex_exec_server::EnvironmentManager::from_codex_home(
            config.codex_home.clone(),
            runtime_paths,
        )
        .await
        .expect("environment manager"),
    );
    assert_eq!(
        environment_manager.default_environment_ids(),
        vec!["dev".to_string(), "local".to_string()]
    );

    let manager = ThreadManager::with_models_provider_and_home_for_tests(
        CodexAuth::from_api_key("dummy"),
        config.model_provider.clone(),
        config.codex_home.to_path_buf(),
        environment_manager,
    );

    let thread = manager
        .start_thread(config)
        .await
        .expect("thread should start");

    let prompt_items = crate::prompt_debug::build_prompt_input_from_session(
        thread.thread.codex.session.as_ref(),
        Vec::<UserInput>::new(),
    )
    .await
    .expect("prompt input");
    let environment_context = prompt_items
        .iter()
        .filter_map(|item| match item {
            ResponseItem::Message { content, .. } => Some(content),
            _ => None,
        })
        .flatten()
        .find_map(|content| match content {
            ContentItem::InputText { text } if text.contains("<environment_context>") => {
                Some(text.as_str())
            }
            _ => None,
        })
        .expect("environment context prompt item");
    assert!(environment_context.contains("<environments>"));
    let cwd = thread.session_configured.cwd.display().to_string();
    let dev_entry = format!(
        r#"<environment id="dev">
      <cwd>{cwd}</cwd>
      <shell>"#
    );
    let local_entry = format!(
        r#"<environment id="local">
      <cwd>{cwd}</cwd>
      <shell>"#
    );
    let dev_position = environment_context
        .find(&dev_entry)
        .expect("dev environment entry");
    let local_position = environment_context
        .find(&local_entry)
        .expect("local environment entry");
    assert!(dev_position < local_position);
    assert!(!environment_context.contains("\n  <cwd>"));
    assert!(!environment_context.contains("\n  <shell>"));
}

#[tokio::test]
async fn start_thread_keeps_internal_threads_hidden_from_normal_lookups() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let manager = ThreadManager::with_models_provider_and_home_for_tests(
        CodexAuth::from_api_key("dummy"),
        config.model_provider.clone(),
        config.codex_home.to_path_buf(),
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
    );
    let thread = manager
        .start_thread_with_options(StartThreadOptions {
            config,
            initial_history: InitialHistory::New,
            session_source: Some(SessionSource::Internal(
                InternalSessionSource::MemoryConsolidation,
            )),
            thread_source: None,
            dynamic_tools: Vec::new(),
            persist_extended_history: false,
            metrics_service_name: None,
            parent_trace: None,
            environments: Vec::new(),
        })
        .await
        .expect("internal thread should start");

    assert_eq!(manager.list_thread_ids().await, Vec::new());
    assert!(manager.get_thread(thread.thread_id).await.is_err());

    let report = manager
        .shutdown_all_threads_bounded(Duration::from_secs(10))
        .await;
    assert_eq!(report.completed, vec![thread.thread_id]);
    assert!(report.submit_failed.is_empty());
    assert!(report.timed_out.is_empty());
    assert!(manager.list_thread_ids().await.is_empty());
}

#[tokio::test]
async fn resume_and_fork_do_not_restore_thread_environments_from_rollout() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let manager = ThreadManager::new(
        &config,
        auth_manager.clone(),
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store_from_config(&config, /*state_db*/ None),
        /*state_db*/ None,
        TEST_INSTALLATION_ID.to_string(),
        /*attestation_provider*/ None,
    );
    let selected_cwd =
        AbsolutePathBuf::try_from(config.cwd.as_path().join("selected")).expect("absolute path");
    let environments = vec![TurnEnvironmentSelection {
        environment_id: "local".to_string(),
        cwd: selected_cwd.clone(),
    }];
    let default_cwd = config.cwd.clone();
    let source = manager
        .start_thread_with_options(StartThreadOptions {
            config: config.clone(),
            initial_history: InitialHistory::New,
            session_source: None,
            thread_source: None,
            dynamic_tools: Vec::new(),
            persist_extended_history: false,
            metrics_service_name: None,
            parent_trace: None,
            environments: environments.clone(),
        })
        .await
        .expect("start source thread");
    source.thread.ensure_rollout_materialized().await;
    source
        .thread
        .flush_rollout()
        .await
        .expect("flush source rollout");
    let rollout_path = source
        .thread
        .rollout_path()
        .expect("source rollout path should exist");
    source
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown source thread before resume");
    let _ = manager.remove_thread(&source.thread_id).await;

    let resumed = manager
        .resume_thread_from_rollout(
            config.clone(),
            rollout_path.clone(),
            auth_manager,
            /*parent_trace*/ None,
        )
        .await
        .expect("resume source thread");
    let resumed_turn = resumed
        .thread
        .codex
        .session
        .new_turn_with_sub_id("resume-turn".to_string(), SessionSettingsUpdate::default())
        .await
        .expect("build resumed turn context");
    assert_eq!(resumed_turn.environments.turn_environments.len(), 1);
    assert_eq!(
        resumed_turn.environments.turn_environments[0].cwd,
        default_cwd
    );
    assert_ne!(
        resumed_turn.environments.turn_environments[0].cwd,
        selected_cwd
    );

    let forked = manager
        .fork_thread(
            ForkSnapshot::Interrupted,
            config,
            rollout_path,
            /*thread_source*/ None,
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("fork source thread");
    let forked_turn = forked
        .thread
        .codex
        .session
        .new_turn_with_sub_id("fork-turn".to_string(), SessionSettingsUpdate::default())
        .await
        .expect("build forked turn context");
    assert_eq!(forked_turn.environments.turn_environments.len(), 1);
    assert_eq!(
        forked_turn.environments.turn_environments[0].cwd,
        default_cwd
    );
    assert_ne!(
        forked_turn.environments.turn_environments[0].cwd,
        selected_cwd
    );
}

#[tokio::test]
async fn explicit_installation_id_skips_codex_home_file() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let installation_id = uuid::Uuid::new_v4().to_string();
    let state_db = init_state_db(&config).await;
    let thread_store = thread_store_from_config(&config, state_db.clone());
    let manager = ThreadManager::new(
        &config,
        auth_manager,
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store,
        state_db.clone(),
        installation_id.clone(),
        /*attestation_provider*/ None,
    );

    let thread = manager
        .start_thread(config.clone())
        .await
        .expect("start thread with explicit installation id");

    assert!(!config.codex_home.join(INSTALLATION_ID_FILENAME).exists());
    assert_eq!(thread.thread.codex.session.installation_id, installation_id);

    thread
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown thread");
    let _ = manager.remove_thread(&thread.thread_id).await;
}

#[tokio::test]
async fn resume_active_thread_from_rollout_returns_running_thread() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let manager = ThreadManager::new(
        &config,
        auth_manager.clone(),
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store_from_config(&config, /*state_db*/ None),
        /*state_db*/ None,
        TEST_INSTALLATION_ID.to_string(),
        /*attestation_provider*/ None,
    );

    let source = manager
        .start_thread(config.clone())
        .await
        .expect("start source thread");
    source.thread.ensure_rollout_materialized().await;
    source
        .thread
        .flush_rollout()
        .await
        .expect("flush source rollout");
    let rollout_path = source
        .thread
        .rollout_path()
        .expect("source rollout path should exist");

    let resumed = manager
        .resume_thread_from_rollout(
            config,
            rollout_path,
            auth_manager,
            /*parent_trace*/ None,
        )
        .await
        .expect("resume active source thread");
    assert_eq!(resumed.thread_id, source.thread_id);
    assert!(Arc::ptr_eq(&resumed.thread, &source.thread));

    source
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown source thread");
}

#[tokio::test]
async fn resume_stopped_thread_from_rollout_spawns_new_thread() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let manager = ThreadManager::new(
        &config,
        auth_manager.clone(),
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store_from_config(&config, /*state_db*/ None),
        /*state_db*/ None,
        TEST_INSTALLATION_ID.to_string(),
        /*attestation_provider*/ None,
    );

    let source = manager
        .start_thread(config.clone())
        .await
        .expect("start source thread");
    source.thread.ensure_rollout_materialized().await;
    source
        .thread
        .flush_rollout()
        .await
        .expect("flush source rollout");
    let rollout_path = source
        .thread
        .rollout_path()
        .expect("source rollout path should exist");
    source
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown source thread");

    let resumed = manager
        .resume_thread_from_rollout(
            config,
            rollout_path,
            auth_manager,
            /*parent_trace*/ None,
        )
        .await
        .expect("resume stopped source thread");
    assert_eq!(resumed.thread_id, source.thread_id);
    assert!(!Arc::ptr_eq(&resumed.thread, &source.thread));

    resumed
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown resumed thread");
}

#[tokio::test]
async fn resume_stopped_thread_from_rollout_preserves_thread_source() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let state_db = init_state_db(&config).await;
    let thread_store = thread_store_from_config(&config, state_db.clone());
    let manager = ThreadManager::new(
        &config,
        auth_manager.clone(),
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store,
        state_db.clone(),
        TEST_INSTALLATION_ID.to_string(),
        /*attestation_provider*/ None,
    );

    let source = manager
        .start_thread_with_options(StartThreadOptions {
            config: config.clone(),
            initial_history: InitialHistory::New,
            session_source: None,
            thread_source: Some(ThreadSource::User),
            dynamic_tools: Vec::new(),
            persist_extended_history: false,
            metrics_service_name: None,
            parent_trace: None,
            environments: Vec::new(),
        })
        .await
        .expect("start source thread");
    source.thread.ensure_rollout_materialized().await;
    source
        .thread
        .flush_rollout()
        .await
        .expect("flush source rollout");
    let rollout_path = source
        .thread
        .rollout_path()
        .expect("source rollout path should exist");
    source
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown source thread before resume");
    let _ = manager.remove_thread(&source.thread_id).await;

    let resumed = manager
        .resume_thread_from_rollout(
            config,
            rollout_path,
            auth_manager,
            /*parent_trace*/ None,
        )
        .await
        .expect("resume source thread");

    assert_eq!(
        resumed
            .thread
            .config_snapshot()
            .await
            .thread_source
            .as_ref(),
        Some(&ThreadSource::User)
    );

    resumed
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown resumed thread");
}

#[tokio::test]
async fn rollout_path_resume_and_fork_read_history_through_thread_store() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    config.experimental_thread_store = ThreadStoreConfig::InMemory {
        id: format!("thread-manager-{}", uuid::Uuid::new_v4()),
    };
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let state_db = init_state_db(&config).await;
    let thread_store = thread_store_from_config(&config, state_db.clone());
    let in_memory_store = thread_store
        .as_any()
        .downcast_ref::<InMemoryThreadStore>()
        .expect("configured in-memory store");
    let manager = ThreadManager::new(
        &config,
        auth_manager.clone(),
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store.clone(),
        state_db,
        TEST_INSTALLATION_ID.to_string(),
        /*attestation_provider*/ None,
    );

    let source = manager
        .start_thread(config.clone())
        .await
        .expect("start source thread");
    source
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown source thread");
    let _ = manager.remove_thread(&source.thread_id).await;

    let rollout_path = config
        .codex_home
        .join("rollouts/source.jsonl")
        .to_path_buf();
    let resumed = manager
        .resume_thread_with_history(
            config.clone(),
            InitialHistory::Resumed(ResumedHistory {
                conversation_id: source.thread_id,
                history: vec![RolloutItem::ResponseItem(user_msg("hello"))],
                rollout_path: Some(rollout_path.clone()),
            }),
            auth_manager.clone(),
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("seed rollout path in store");
    resumed
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown seeded resumed thread");
    let _ = manager.remove_thread(&resumed.thread_id).await;

    let resumed_from_path = manager
        .resume_thread_from_rollout(
            config.clone(),
            rollout_path.clone(),
            auth_manager,
            /*parent_trace*/ None,
        )
        .await
        .expect("resume from rollout path");
    assert_eq!(resumed_from_path.thread_id, resumed.thread_id);

    let forked = manager
        .fork_thread(
            ForkSnapshot::Interrupted,
            config,
            rollout_path,
            /*thread_source*/ None,
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("fork from rollout path");
    assert_ne!(forked.thread_id, resumed.thread_id);

    let calls = in_memory_store.calls().await;
    assert_eq!(calls.read_thread_by_rollout_path, 2);

    resumed_from_path
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown path-resumed thread");
    forked
        .thread
        .shutdown_and_wait()
        .await
        .expect("shutdown forked thread");
}

#[tokio::test]
async fn new_uses_active_provider_for_model_refresh() {
    let server = MockServer::start().await;
    let models_mock = mount_models_once(&server, ModelsResponse { models: vec![] }).await;

    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");
    config.model_catalog = None;
    config.model_provider.base_url = Some(server.uri());

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let manager = ThreadManager::new(
        &config,
        auth_manager,
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store_from_config(&config, /*state_db*/ None),
        /*state_db*/ None,
        TEST_INSTALLATION_ID.to_string(),
        /*attestation_provider*/ None,
    );

    let _ = manager.list_models(RefreshStrategy::Online).await;
    assert_eq!(models_mock.requests().len(), 1);
}

#[test]
fn interrupted_fork_snapshot_appends_interrupt_boundary() {
    let committed_history =
        InitialHistory::Forked(vec![RolloutItem::ResponseItem(user_msg("hello"))]);

    assert_eq!(
        serde_json::to_value(
            append_interrupted_boundary(
                committed_history,
                /*turn_id*/ None,
                InterruptedTurnHistoryMarker::ContextualUser,
            )
            .get_rollout_items()
        )
        .expect("serialize interrupted fork history"),
        serde_json::to_value(vec![
            RolloutItem::ResponseItem(user_msg("hello")),
            RolloutItem::ResponseItem(contextual_user_interrupted_marker()),
            RolloutItem::EventMsg(EventMsg::TurnAborted(TurnAbortedEvent {
                turn_id: None,
                reason: TurnAbortReason::Interrupted,
                completed_at: None,
                duration_ms: None,
            })),
        ])
        .expect("serialize expected interrupted fork history"),
    );
    assert_eq!(
        serde_json::to_value(
            append_interrupted_boundary(
                InitialHistory::New,
                /*turn_id*/ None,
                InterruptedTurnHistoryMarker::ContextualUser,
            )
            .get_rollout_items()
        )
        .expect("serialize interrupted empty fork history"),
        serde_json::to_value(vec![
            RolloutItem::ResponseItem(contextual_user_interrupted_marker()),
            RolloutItem::EventMsg(EventMsg::TurnAborted(TurnAbortedEvent {
                turn_id: None,
                reason: TurnAbortReason::Interrupted,
                completed_at: None,
                duration_ms: None,
            })),
        ])
        .expect("serialize expected interrupted empty history"),
    );
}

#[test]
fn disabled_interrupted_fork_snapshot_appends_only_interrupt_event() {
    let committed_history =
        InitialHistory::Forked(vec![RolloutItem::ResponseItem(user_msg("hello"))]);

    assert_eq!(
        serde_json::to_value(
            append_interrupted_boundary(
                committed_history,
                /*turn_id*/ None,
                InterruptedTurnHistoryMarker::Disabled,
            )
            .get_rollout_items()
        )
        .expect("serialize disabled interrupted fork history"),
        serde_json::to_value(vec![
            RolloutItem::ResponseItem(user_msg("hello")),
            RolloutItem::EventMsg(EventMsg::TurnAborted(TurnAbortedEvent {
                turn_id: None,
                reason: TurnAbortReason::Interrupted,
                completed_at: None,
                duration_ms: None,
            })),
        ])
        .expect("serialize expected disabled interrupted fork history"),
    );
    assert_eq!(
        serde_json::to_value(
            append_interrupted_boundary(
                InitialHistory::New,
                /*turn_id*/ None,
                InterruptedTurnHistoryMarker::Disabled,
            )
            .get_rollout_items()
        )
        .expect("serialize disabled interrupted empty fork history"),
        serde_json::to_value(vec![RolloutItem::EventMsg(EventMsg::TurnAborted(
            TurnAbortedEvent {
                turn_id: None,
                reason: TurnAbortReason::Interrupted,
                completed_at: None,
                duration_ms: None,
            },
        ))])
        .expect("serialize expected disabled interrupted empty fork history"),
    );
}

#[test]
fn interrupted_snapshot_is_not_mid_turn() {
    let interrupted_history = InitialHistory::Forked(vec![
        RolloutItem::ResponseItem(user_msg("hello")),
        RolloutItem::ResponseItem(assistant_msg("partial")),
        RolloutItem::ResponseItem(contextual_user_interrupted_marker()),
        RolloutItem::EventMsg(EventMsg::TurnAborted(TurnAbortedEvent {
            turn_id: Some("turn-1".to_string()),
            reason: TurnAbortReason::Interrupted,
            completed_at: None,
            duration_ms: None,
        })),
    ]);

    assert_eq!(
        snapshot_turn_state(&interrupted_history),
        SnapshotTurnState {
            ends_mid_turn: false,
            active_turn_id: None,
            active_turn_start_index: None,
        },
    );
}

#[test]
fn multi_agent_v2_interrupted_marker_uses_developer_input_message() {
    let marker = developer_interrupted_marker();

    let ResponseItem::Message { role, content, .. } = marker else {
        panic!("expected interrupted marker to be a message");
    };
    assert_eq!(role, "developer");
    assert!(
        matches!(
            content.as_slice(),
            [ContentItem::InputText { text }]
                if text.contains(crate::context::TurnAborted::INTERRUPTED_DEVELOPER_GUIDANCE)
        ),
        "expected interrupted marker to use developer InputText content"
    );
}

#[test]
fn completed_legacy_event_history_is_not_mid_turn() {
    let completed_history = InitialHistory::Forked(vec![
        RolloutItem::EventMsg(EventMsg::UserMessage(UserMessageEvent {
            message: "hello".to_string(),
            images: None,
            text_elements: Vec::new(),
            local_images: Vec::new(),
        })),
        RolloutItem::EventMsg(EventMsg::AgentMessage(AgentMessageEvent {
            message: "done".to_string(),
            phase: None,
            memory_citation: None,
        })),
    ]);

    assert_eq!(
        snapshot_turn_state(&completed_history),
        SnapshotTurnState {
            ends_mid_turn: false,
            active_turn_id: None,
            active_turn_start_index: None,
        },
    );
}

#[test]
fn mixed_response_and_legacy_user_event_history_is_mid_turn() {
    let mixed_history = InitialHistory::Forked(vec![
        RolloutItem::ResponseItem(user_msg("hello")),
        RolloutItem::EventMsg(EventMsg::UserMessage(UserMessageEvent {
            message: "hello".to_string(),
            images: None,
            text_elements: Vec::new(),
            local_images: Vec::new(),
        })),
    ]);

    assert_eq!(
        snapshot_turn_state(&mixed_history),
        SnapshotTurnState {
            ends_mid_turn: true,
            active_turn_id: None,
            active_turn_start_index: None,
        },
    );
}

#[tokio::test]
async fn interrupted_fork_snapshot_does_not_synthesize_turn_id_for_legacy_history() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let state_db = init_state_db(&config).await;
    let manager = ThreadManager::new(
        &config,
        auth_manager.clone(),
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store_from_config(&config, state_db.clone()),
        state_db.clone(),
        TEST_INSTALLATION_ID.to_string(),
        /*attestation_provider*/ None,
    );

    let source = manager
        .resume_thread_with_history(
            config.clone(),
            InitialHistory::Forked(vec![
                RolloutItem::ResponseItem(user_msg("hello")),
                RolloutItem::ResponseItem(assistant_msg("partial")),
            ]),
            auth_manager,
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("create source thread from completed history");
    let source_path = source
        .thread
        .rollout_path()
        .expect("source rollout path should exist");
    let source_history = RolloutRecorder::get_rollout_history(&source_path)
        .await
        .expect("read source rollout history");
    let source_snapshot_state = snapshot_turn_state(&source_history);
    assert!(source_snapshot_state.ends_mid_turn);
    let expected_turn_id = source_snapshot_state.active_turn_id.clone();
    assert_eq!(expected_turn_id, None);

    let forked = manager
        .fork_thread(
            ForkSnapshot::Interrupted,
            config.clone(),
            source_path,
            /*thread_source*/ None,
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("fork interrupted snapshot");
    let forked_path = forked
        .thread
        .rollout_path()
        .expect("forked rollout path should exist");
    let history = RolloutRecorder::get_rollout_history(&forked_path)
        .await
        .expect("read forked rollout history");
    assert!(!snapshot_turn_state(&history).ends_mid_turn);
    let rollout_items: Vec<_> = history
        .get_rollout_items()
        .into_iter()
        .filter(|item| !matches!(item, RolloutItem::SessionMeta(_)))
        .collect();
    let interrupted_marker_json = serde_json::to_value(RolloutItem::ResponseItem(
        contextual_user_interrupted_marker(),
    ))
    .expect("serialize interrupted marker");
    let interrupted_abort_json = serde_json::to_value(RolloutItem::EventMsg(
        EventMsg::TurnAborted(TurnAbortedEvent {
            turn_id: expected_turn_id,
            reason: TurnAbortReason::Interrupted,
            completed_at: None,
            duration_ms: None,
        }),
    ))
    .expect("serialize interrupted abort event");
    assert_eq!(
        rollout_items
            .iter()
            .filter(|item| {
                serde_json::to_value(item).expect("serialize rollout item")
                    == interrupted_marker_json
            })
            .count(),
        1,
    );
    assert_eq!(
        rollout_items
            .iter()
            .filter(|item| {
                serde_json::to_value(item).expect("serialize rollout item")
                    == interrupted_abort_json
            })
            .count(),
        1,
    );
}

#[tokio::test]
async fn interrupted_fork_snapshot_preserves_explicit_turn_id() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let state_db = init_state_db(&config).await;
    let manager = ThreadManager::new(
        &config,
        auth_manager.clone(),
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store_from_config(&config, state_db.clone()),
        state_db.clone(),
        TEST_INSTALLATION_ID.to_string(),
        /*attestation_provider*/ None,
    );

    let source = manager
        .resume_thread_with_history(
            config.clone(),
            InitialHistory::Forked(vec![
                RolloutItem::EventMsg(EventMsg::TurnStarted(TurnStartedEvent {
                    turn_id: "turn-explicit".to_string(),
                    started_at: None,
                    model_context_window: None,
                    collaboration_mode_kind: Default::default(),
                })),
                RolloutItem::ResponseItem(user_msg("hello")),
                RolloutItem::ResponseItem(assistant_msg("partial")),
            ]),
            auth_manager,
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("create source thread from explicit partial history");
    let source_path = source
        .thread
        .rollout_path()
        .expect("source rollout path should exist");
    let source_history = RolloutRecorder::get_rollout_history(&source_path)
        .await
        .expect("read source rollout history");
    let source_snapshot_state = snapshot_turn_state(&source_history);
    assert_eq!(
        source_snapshot_state,
        SnapshotTurnState {
            ends_mid_turn: true,
            active_turn_id: Some("turn-explicit".to_string()),
            active_turn_start_index: Some(1),
        },
    );

    let forked = manager
        .fork_thread(
            ForkSnapshot::Interrupted,
            config.clone(),
            source_path,
            /*thread_source*/ None,
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("fork interrupted snapshot");
    let forked_path = forked
        .thread
        .rollout_path()
        .expect("forked rollout path should exist");
    let history = RolloutRecorder::get_rollout_history(&forked_path)
        .await
        .expect("read forked rollout history");
    let rollout_items: Vec<_> = history
        .get_rollout_items()
        .into_iter()
        .filter(|item| !matches!(item, RolloutItem::SessionMeta(_)))
        .collect();

    assert!(rollout_items.iter().any(|item| {
        matches!(
            item,
            RolloutItem::EventMsg(EventMsg::TurnAborted(TurnAbortedEvent {
                turn_id: Some(turn_id),
                reason: TurnAbortReason::Interrupted,
            completed_at: None,
            duration_ms: None,
            })) if turn_id == "turn-explicit"
        )
    }));
}

#[tokio::test]
async fn interrupted_fork_snapshot_uses_persisted_mid_turn_history_without_live_source() {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let state_db = init_state_db(&config).await;
    let manager = ThreadManager::new(
        &config,
        auth_manager.clone(),
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store_from_config(&config, state_db.clone()),
        state_db.clone(),
        TEST_INSTALLATION_ID.to_string(),
        /*attestation_provider*/ None,
    );

    let source = manager
        .resume_thread_with_history(
            config.clone(),
            InitialHistory::Forked(vec![
                RolloutItem::ResponseItem(user_msg("hello")),
                RolloutItem::ResponseItem(assistant_msg("partial")),
            ]),
            auth_manager,
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("create source thread from partial history");
    let source_path = source
        .thread
        .rollout_path()
        .expect("source rollout path should exist");
    let source_history = RolloutRecorder::get_rollout_history(&source_path)
        .await
        .expect("read source rollout history");
    assert!(snapshot_turn_state(&source_history).ends_mid_turn);
    manager.remove_thread(&source.thread_id).await;

    let forked = manager
        .fork_thread(
            ForkSnapshot::Interrupted,
            config.clone(),
            source_path,
            /*thread_source*/ None,
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("fork interrupted snapshot");
    let forked_path = forked
        .thread
        .rollout_path()
        .expect("forked rollout path should exist");
    let history = RolloutRecorder::get_rollout_history(&forked_path)
        .await
        .expect("read forked rollout history");
    assert!(!snapshot_turn_state(&history).ends_mid_turn);

    let forked_rollout_items: Vec<_> = history
        .get_rollout_items()
        .into_iter()
        .filter(|item| !matches!(item, RolloutItem::SessionMeta(_)))
        .collect();
    let interrupted_marker_json = serde_json::to_value(RolloutItem::ResponseItem(
        contextual_user_interrupted_marker(),
    ))
    .expect("serialize interrupted marker");
    assert_eq!(
        forked_rollout_items
            .iter()
            .filter(|item| {
                serde_json::to_value(item).expect("serialize forked rollout item")
                    == interrupted_marker_json
            })
            .count(),
        1,
    );

    manager.remove_thread(&forked.thread_id).await;
    let reforked = manager
        .fork_thread(
            ForkSnapshot::Interrupted,
            config.clone(),
            forked_path,
            /*thread_source*/ None,
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("re-fork interrupted snapshot");
    let reforked_path = reforked
        .thread
        .rollout_path()
        .expect("re-forked rollout path should exist");
    let reforked_history = RolloutRecorder::get_rollout_history(&reforked_path)
        .await
        .expect("read re-forked rollout history");
    let reforked_rollout_items: Vec<_> = reforked_history
        .get_rollout_items()
        .into_iter()
        .filter(|item| !matches!(item, RolloutItem::SessionMeta(_)))
        .collect();

    assert_eq!(
        reforked_rollout_items
            .iter()
            .filter(|item| {
                serde_json::to_value(item).expect("serialize re-forked rollout item")
                    == interrupted_marker_json
            })
            .count(),
        1,
    );
    assert_eq!(
        reforked_rollout_items
            .iter()
            .filter(|item| {
                matches!(
                    item,
                    RolloutItem::EventMsg(EventMsg::TurnAborted(TurnAbortedEvent {
                        reason: TurnAbortReason::Interrupted,
                        ..
                    }))
                )
            })
            .count(),
        1,
    );
}

#[tokio::test]
async fn resumed_thread_keeps_paused_goal_paused() -> anyhow::Result<()> {
    let temp_dir = tempdir().expect("tempdir");
    let mut config = test_config().await;
    config.codex_home = temp_dir.path().join("codex-home").abs();
    config.cwd = config.codex_home.abs();
    config
        .features
        .enable(Feature::Goals)
        .expect("goals should be enableable in tests");
    std::fs::create_dir_all(&config.codex_home).expect("create codex home");

    let auth_manager =
        AuthManager::from_auth_for_testing(CodexAuth::create_dummy_chatgpt_auth_for_testing());
    let state_db = init_state_db(&config).await;
    let manager = ThreadManager::new(
        &config,
        auth_manager.clone(),
        SessionSource::Exec,
        Arc::new(codex_exec_server::EnvironmentManager::default_for_tests()),
        empty_extension_registry(),
        /*analytics_events_client*/ None,
        thread_store_from_config(&config, state_db.clone()),
        state_db.clone(),
        TEST_INSTALLATION_ID.to_string(),
        /*attestation_provider*/ None,
    );

    let source = manager
        .resume_thread_with_history(
            config.clone(),
            InitialHistory::Forked(vec![RolloutItem::ResponseItem(user_msg("keep working"))]),
            auth_manager.clone(),
            /*persist_extended_history*/ false,
            /*parent_trace*/ None,
        )
        .await
        .expect("create source thread");
    let source_path = source
        .thread
        .rollout_path()
        .expect("source rollout path should exist");
    source.thread.flush_rollout().await?;
    let state_db = source
        .thread
        .state_db()
        .expect("source thread should have a state db");
    state_db
        .replace_thread_goal(
            source.thread_id,
            "Keep working until the task is done",
            codex_state::ThreadGoalStatus::Paused,
            /*token_budget*/ None,
        )
        .await?;
    source.thread.shutdown_and_wait().await?;
    manager.remove_thread(&source.thread_id).await;

    let resumed = manager
        .resume_thread_from_rollout(
            config.clone(),
            source_path,
            auth_manager,
            /*parent_trace*/ None,
        )
        .await
        .expect("resume source thread");
    let goal = state_db
        .get_thread_goal(resumed.thread_id)
        .await?
        .expect("goal should still exist after resume");
    assert_eq!(codex_state::ThreadGoalStatus::Paused, goal.status);
    assert!(
        resumed
            .thread
            .codex
            .session
            .active_turn
            .lock()
            .await
            .is_none()
    );

    resumed.thread.continue_active_goal_if_idle().await?;
    assert!(
        resumed
            .thread
            .codex
            .session
            .active_turn
            .lock()
            .await
            .is_none()
    );

    resumed.thread.shutdown_and_wait().await?;
    Ok(())
}