//! Integration tests for background worker.

use percolate_rocks::storage::{BackgroundWorker, Task, WorkerStatus};
use std::time::Duration;

#[tokio::test]
async fn test_worker_lifecycle() {
    // TODO: Test worker start, submit, shutdown
    // 1. Create worker
    // 2. Start worker
    // 3. Verify status is Idle
    // 4. Shutdown worker
    // 5. Verify status is Stopped
}

#[tokio::test]
async fn test_submit_save_index_task() {
    // TODO: Test submitting SaveIndex task
    // 1. Create worker and start
    // 2. Submit SaveIndex task
    // 3. Verify task executes
    // 4. Verify status returns to Idle
}

#[tokio::test]
async fn test_submit_load_index_task() {
    // TODO: Test submitting LoadIndex task
    // 1. Create worker and start
    // 2. Submit LoadIndex task
    // 3. Verify task executes
    // 4. Verify index state changes
}

#[tokio::test]
async fn test_submit_embedding_task() {
    // TODO: Test submitting GenerateEmbeddings task
    // 1. Create worker and start
    // 2. Submit GenerateEmbeddings task
    // 3. Verify embeddings generated
    // 4. Verify callback executed
}

#[tokio::test]
async fn test_wait_idle() {
    // TODO: Test wait_idle with timeout
    // 1. Create worker and start
    // 2. Submit multiple tasks
    // 3. Call wait_idle
    // 4. Verify returns true when idle
    // 5. Test timeout case
}

#[tokio::test]
async fn test_shutdown_with_pending_tasks() {
    // TODO: Test graceful shutdown with pending work
    // 1. Create worker and start
    // 2. Submit tasks
    // 3. Shutdown immediately
    // 4. Verify pending tasks complete
    // 5. Verify worker stops cleanly
}

#[tokio::test]
async fn test_worker_error_handling() {
    // TODO: Test worker error states
    // 1. Submit task that will fail
    // 2. Verify status changes to Error
    // 3. Verify worker continues processing
}

#[tokio::test]
async fn test_task_callback() {
    // TODO: Test task completion callback
    // 1. Submit task with callback
    // 2. Verify callback called on completion
    // 3. Verify callback receives correct result
}

#[tokio::test]
async fn test_queue_size() {
    // TODO: Test queue_size reporting
    // 1. Submit multiple tasks
    // 2. Check queue_size increases
    // 3. Verify decreases as tasks complete
}

#[tokio::test]
async fn test_concurrent_task_submission() {
    // TODO: Test thread-safe task submission
    // 1. Spawn multiple threads
    // 2. Each submits tasks concurrently
    // 3. Verify all tasks execute
    // 4. Verify no race conditions
}
