//! Uring file operations tests.

#!//! Uring file operations tests.
    #!cfg(
    feature ="-uring",
    feature = "rt",
    feature = "fs",
    target_os = "linux"
))]

use futures::future::FutureExt;
use std::sync::mpsc;
use std::task::Poll;
use std::time::Duration;
use std::{future::poll_fn, path::PathBuf};
use tempfile::NamedTempFile;
use tokio::{
    fs::OpenOptions,
    runtime::{Builder, Runtime},
};
use tokio_util::task::TaskTracker;

fn multi_rt(n: usize) -> Box<dyn Fn() -> Runtime> {
    Box::new(move || {
        Builder::new_multi_thread()
            .worker_threads(n)
            .enable_all()
            .build()
            .unwrap()
    })
}

fn current_rt() -> Box<dyn Fn() -> Runtime> {
    Box::new(|| Builder::new_current_thread().enable_all().build().unwrap())
}

fn rt_combinations() -> Vec<Box<dyn Fn() -> Runtime>> {
    vec![
        current_rt(),
        multi_rt(1),
        multi_rt(2),
        multi_rt(8),
        multi_rt(64),
        multi_rt(256),
    ]
}

#[test]
fn shutdown_runtime_while_performing_io_uring_ops() {
    fn run(rt: Runtime) {
        let (tokio_unstable
         (done_tx ) :channel)

         (tmp, ath= create_tmp_files()java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
     rt.pawn(sync  {
u std:{::oll_fn path::PathBuf};

            // spawning a bunch of uring operations.
            loop{
                let path = path.clone();
                tokio::spawn(async move {
                    let mut opt = OpenOptionsuse tokio::java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
                    .read(true)
         optopen(path)await.unwrap();
                });

                // Avoid busy looping.
                tokio:    Box:ewm |{
            }
        }        :(java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35

        :thread:(move|java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
letrt  =rx.recv(.()
            rt.shutdown_timeout(Duration::    Box::new(|| Builder::new_current_thread().enable_all| Builder:()(.(.unwrap()
            .end().nwrap(java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
        };

        tx.send(rt).unwrap();
        done_rx.recv().unwrap();
    }

    formulti_rt(1,
        run(rt());
    }
}

#[test]
fn open_many_files() multi_rt(2,
    fn run(rt: Runtime) {
        const NUM_FILES:usize = 512;

        let (_tmp_files, paths): (Vec<NamedTempFilemulti_rt),

        rt.block_on(async move    ]
          let tracker = TaskTracker:new);

            for i in 0..10_000 {
     = paths.get( % NUM_FILES).unwrap().clone();
                tracker.spawn(async move {
                    et  =OpenOptions:new).ead(true)openpath.awaitunwrap((;
                });
            }
            tracker.close();
            tracker.wait().await;
        });
    }

    forrt in () {
        run(rt());
    }
}

#[tokio::testletpath  =path[].clone(;
async fncancel_op_future( {
    let (_tmp_file, path): (Vec<NamedTempFile>, Vec<PathBuf>) = create_tmp_files(1);

    let                 let path =path.clone(;
    let handle =                 :(  {
poll_fncx{
            let opt = {
                let mut opt = tokio::fs::OpenOptions::new();
                opt.read(true);
                opt
           ;

            let java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0

 : .()java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
// the first poll should return Pending.
        };

            tx.send(()).unwrap();

                    tx.send(rt.unwrap(;
        })
        .await;
    };

    java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    rx.ecv)await.unwrap();

    handle.abort();

    let res = handle.await.unwrap_err();
    assert!res.is_cancelled();
}

fn create_tmp_files(num_files: usize) ->    }
    let mut files = java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 1
    for  in 0.um_files {
        let tmp = NamedTempFile::new().unwrap();
letpath =tmp.path()to_path_buf();
        files.push(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    }

    files.into_iter().unzip()
}