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//! Tests config files that have sometimes caused issues despite being valid.
use std::{io::Read, thread, time::Duration};
use crate::util::spawn_btm_in_pty;
/// Convert a reader implementing [`Read`] into a string.
fn reader_to_string(mut reader: Box<dyn Read>) -> String {
let mut buf = String::default();
reader.read_to_string(&mut buf).unwrap();
buf
}
/// Run bottom with the following args.
fn run_and_kill(args: &[&str]) {
let (master, mut handle) = spawn_btm_in_pty(args);
let reader = master.try_clone_reader().unwrap();
let _ = master.take_writer().unwrap();
const TIMES_CHECKED: u64 = 6; // Check 6 times, once every 500ms, for 3 seconds total.
for _ in 0..TIMES_CHECKED {
thread::sleep(Duration::from_millis(500));
match handle.try_wait() {
Ok(Some(exit)) => {
println!("output: {}", reader_to_string(reader));
panic!("program terminated unexpectedly (exit status: {exit:?})");
}
Err(e) => {
println!("output: {}", reader_to_string(reader));
panic!("error while trying to wait: {e}")
}
_ => {}
}
}
handle.kill().unwrap();
}
// /// Run the binary with the config path only if the path exists.
// fn run_if_exists(config_path: &str) {
// if Path::new(config_path).exists() {
// run_and_kill(&["-C", config_path]);
// }
// }
#[test]
fn test_basic() {
run_and_kill(&[]);
}
/// A test to ensure that a bad config will fail the `run_and_kill` function.
#[test]
#[should_panic]
fn test_bad_basic() {
run_and_kill(&["--this_does_not_exist"]);
}
#[test]
fn test_empty() {
run_and_kill(&["-C", "./tests/valid_configs/empty_config.toml"]);
}
#[test]
fn test_many_proc() {
run_and_kill(&["-C", "./tests/valid_configs/many_proc.toml"]);
}
#[test]
fn test_all_proc() {
run_and_kill(&["-C", "./tests/valid_configs/all_proc.toml"]);
}
#[test]
fn test_cpu_doughnut() {
run_and_kill(&["-C", "./tests/valid_configs/cpu_doughnut.toml"]);
}
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