1 // Copyright 2024 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 use bytes::Bytes; 16 use libslirp_rs::libslirp::LibSlirp; 17 use libslirp_rs::libslirp_config::SlirpConfig; 18 19 use std::io; 20 use std::sync::mpsc; 21 use std::time::Duration; 22 23 /// Test whether shutdown closes the rx channel 24 #[test] it_shutdown()25fn it_shutdown() { 26 let config = SlirpConfig { ..Default::default() }; 27 28 let before_fd_count = count_open_fds().unwrap(); 29 30 let (tx, rx) = mpsc::channel::<Bytes>(); 31 let slirp = LibSlirp::new(config, tx, None); 32 slirp.shutdown(); 33 assert_eq!( 34 rx.recv_timeout(Duration::from_millis(5)), 35 Err(mpsc::RecvTimeoutError::Disconnected) 36 ); 37 38 let after_fd_count = count_open_fds().unwrap(); 39 assert_eq!(before_fd_count, after_fd_count); 40 } 41 42 #[cfg(target_os = "linux")] count_open_fds() -> io::Result<usize>43fn count_open_fds() -> io::Result<usize> { 44 use std::fs; 45 let entries = fs::read_dir("/proc/self/fd")?; 46 Ok(entries.count()) 47 } 48 49 #[cfg(not(target_os = "linux"))] count_open_fds() -> io::Result<usize>50fn count_open_fds() -> io::Result<usize> { 51 Ok(0) 52 } 53