collet 0.1.1

Relentless agentic coding orchestrator with zero-drop agent loops
Documentation 
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use tempfile::tempdir;

use collet::agent::session::{SessionSnapshot, SessionStore};
use collet::api::content::Content;
use collet::api::models::Message;

// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------

fn make_snapshot(id: &str, completed: bool, timestamp: &str) -> SessionSnapshot {
    SessionSnapshot {
        session_id: id.to_string(),
        working_dir: "/tmp/test".to_string(),
        system_prompt: "You are a helpful assistant.".to_string(),
        messages: vec![
            Message {
                role: "user".to_string(),
                content: Some(Content::text("Hello")),
                reasoning_content: None,
                tool_calls: None,
                tool_call_id: None,
            },
            Message {
                role: "assistant".to_string(),
                content: Some(Content::text("Hi there!")),
                reasoning_content: None,
                tool_calls: None,
                tool_call_id: None,
            },
        ],
        last_reasoning: None,
        timestamp: timestamp.to_string(),
        completed,
        user_task: Some("Say hello".to_string()),
        model: Some("glm-4.7".to_string()),
        ui_state: None,
    }
}

// ---------------------------------------------------------------------------
// Save -> Load round-trip
// ---------------------------------------------------------------------------

#[tokio::test]
async fn save_and_load_round_trip() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    let original = make_snapshot("sess-001", false, "2025-01-15T10:00:00Z");
    store.save(&original).await.unwrap();

    let loaded = store.load("sess-001").await.unwrap();

    assert_eq!(loaded.session_id, "sess-001");
    assert_eq!(loaded.working_dir, "/tmp/test");
    assert_eq!(loaded.system_prompt, "You are a helpful assistant.");
    assert_eq!(loaded.messages.len(), 2);
    assert_eq!(loaded.messages[0].role, "user");
    assert_eq!(
        loaded.messages[0]
            .content
            .as_ref()
            .map(|c| c.text_content()),
        Some("Hello".to_string())
    );
    assert_eq!(loaded.messages[1].role, "assistant");
    assert_eq!(
        loaded.messages[1]
            .content
            .as_ref()
            .map(|c| c.text_content()),
        Some("Hi there!".to_string())
    );
    assert!(!loaded.completed);
    assert_eq!(loaded.user_task.as_deref(), Some("Say hello"));
    assert_eq!(loaded.model.as_deref(), Some("glm-4.7"));
}

#[tokio::test]
async fn save_preserves_optional_fields() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    let mut snap = make_snapshot("sess-opt", true, "2025-02-01T12:00:00Z");
    snap.last_reasoning = Some("I thought about it carefully.".to_string());
    snap.user_task = None;
    snap.model = None;

    store.save(&snap).await.unwrap();
    let loaded = store.load("sess-opt").await.unwrap();

    assert_eq!(
        loaded.last_reasoning.as_deref(),
        Some("I thought about it carefully.")
    );
    assert!(loaded.user_task.is_none());
    assert!(loaded.model.is_none());
}

// ---------------------------------------------------------------------------
// find_incomplete
// ---------------------------------------------------------------------------

#[tokio::test]
async fn find_incomplete_returns_none_when_completed() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    let snap = make_snapshot("sess-done", true, "2025-01-15T10:00:00Z");
    store.save(&snap).await.unwrap();

    let result = store.find_incomplete().await;
    assert!(
        result.is_none(),
        "find_incomplete should return None for a completed session"
    );
}

#[tokio::test]
async fn find_incomplete_returns_session_when_not_completed() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    let snap = make_snapshot("sess-wip", false, "2025-01-15T10:00:00Z");
    store.save(&snap).await.unwrap();

    let result = store.find_incomplete().await;
    assert!(
        result.is_some(),
        "find_incomplete should find the incomplete session"
    );
    assert_eq!(result.unwrap().session_id, "sess-wip");
}

#[tokio::test]
async fn find_incomplete_returns_latest_incomplete() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    // Save a completed one first
    let completed = make_snapshot("sess-old", true, "2025-01-01T10:00:00Z");
    store.save(&completed).await.unwrap();

    // Then save an incomplete one (this becomes "latest")
    let incomplete = make_snapshot("sess-new", false, "2025-01-15T10:00:00Z");
    store.save(&incomplete).await.unwrap();

    let result = store.find_incomplete().await;
    assert!(result.is_some());
    assert_eq!(result.unwrap().session_id, "sess-new");
}

// ---------------------------------------------------------------------------
// list sessions
// ---------------------------------------------------------------------------

#[tokio::test]
async fn list_sessions_ordered_by_timestamp_descending() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    let snap_a = make_snapshot("sess-a", true, "2025-01-10T10:00:00Z");
    let snap_b = make_snapshot("sess-b", false, "2025-01-20T10:00:00Z");
    let snap_c = make_snapshot("sess-c", true, "2025-01-15T10:00:00Z");

    store.save(&snap_a).await.unwrap();
    store.save(&snap_b).await.unwrap();
    store.save(&snap_c).await.unwrap();

    let sessions = store.list().await;

    assert_eq!(sessions.len(), 3);
    // Should be sorted newest first
    assert_eq!(sessions[0].0, "sess-b");
    assert_eq!(sessions[1].0, "sess-c");
    assert_eq!(sessions[2].0, "sess-a");
}

#[tokio::test]
async fn list_empty_store_returns_empty() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    let sessions = store.list().await;
    assert!(sessions.is_empty());
}

// ---------------------------------------------------------------------------
// cleanup old sessions
// ---------------------------------------------------------------------------

#[tokio::test]
async fn cleanup_removes_old_completed_sessions() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    // Create 4 completed sessions
    for i in 1..=4 {
        let snap = make_snapshot(
            &format!("sess-{i:03}"),
            true,
            &format!("2025-01-{i:02}T10:00:00Z"),
        );
        store.save(&snap).await.unwrap();
    }

    // Keep only 2 most recent completed sessions
    let removed = store.cleanup(2).await.unwrap();
    assert_eq!(removed, 2, "should remove 2 old completed sessions");

    let remaining = store.list().await;
    assert_eq!(remaining.len(), 2);

    let ids: Vec<&str> = remaining.iter().map(|(id, _, _)| id.as_str()).collect();
    assert!(ids.contains(&"sess-004"), "newest should remain");
    assert!(ids.contains(&"sess-003"), "second newest should remain");
}

#[tokio::test]
async fn cleanup_does_not_remove_incomplete_sessions() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    // 2 completed, 1 incomplete
    let c1 = make_snapshot("completed-1", true, "2025-01-01T10:00:00Z");
    let c2 = make_snapshot("completed-2", true, "2025-01-02T10:00:00Z");
    let inc = make_snapshot("incomplete-1", false, "2025-01-03T10:00:00Z");

    store.save(&c1).await.unwrap();
    store.save(&c2).await.unwrap();
    store.save(&inc).await.unwrap();

    // Keep 1 completed session
    let removed = store.cleanup(1).await.unwrap();
    assert_eq!(removed, 1, "should remove 1 old completed session");

    let remaining = store.list().await;
    // Should still have incomplete-1 and completed-2
    let ids: Vec<&str> = remaining.iter().map(|(id, _, _)| id.as_str()).collect();
    assert!(
        ids.contains(&"incomplete-1"),
        "incomplete session should survive cleanup"
    );
    assert!(
        ids.contains(&"completed-2"),
        "most recent completed should survive"
    );
}

#[tokio::test]
async fn cleanup_with_nothing_to_remove() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    let snap = make_snapshot("only-one", true, "2025-01-01T10:00:00Z");
    store.save(&snap).await.unwrap();

    let removed = store.cleanup(5).await.unwrap();
    assert_eq!(removed, 0);
}

// ---------------------------------------------------------------------------
// Load nonexistent session
// ---------------------------------------------------------------------------

#[tokio::test]
async fn load_nonexistent_session_returns_error() {
    let dir = tempdir().unwrap();
    let store = SessionStore::new(dir.path().to_str().unwrap());

    let result = store.load("does-not-exist").await;
    assert!(result.is_err());
}