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|
use pty_process::Command as _;
use std::io::{BufRead as _, Read as _};
use std::os::unix::io::AsRawFd as _;
pub struct Fixture {
name: String,
features: String,
screenguard: bool,
tempdir: assert_fs::TempDir,
}
impl Fixture {
pub fn new(name: &str) -> Self {
Self {
name: name.to_string(),
features: String::new(),
screenguard: true,
tempdir: assert_fs::TempDir::new().unwrap(),
}
}
#[allow(dead_code)]
pub fn features(&mut self, features: &str) {
self.features = features.to_string();
}
#[allow(dead_code)]
pub fn screenguard(&mut self, screenguard: bool) {
self.screenguard = screenguard;
}
pub fn build(self) -> BuiltFixture {
let Self {
name,
features,
screenguard,
tempdir,
} = self;
let run = escargot::CargoBuild::new()
.bin(name)
.current_release()
.current_target()
.manifest_path("tests/fixtures/bin/Cargo.toml")
.target_dir(tempdir.path())
.features(features)
.run()
.unwrap();
BuiltFixture {
_tempdir: tempdir,
run,
screenguard,
}
}
}
pub struct BuiltFixture {
_tempdir: assert_fs::TempDir,
run: escargot::CargoRun,
screenguard: bool,
}
impl BuiltFixture {
pub fn run<F: FnOnce(&mut std::fs::File)>(
&mut self,
args: &[&str],
f: F,
) {
let mut cmd = self.run.command();
let mut child = cmd
.args(args)
.spawn_pty(Some(&pty_process::Size::new(24, 80)))
.unwrap();
if self.screenguard {
assert!(read_ready(child.pty().as_raw_fd()));
let mut buf = vec![0u8; 1024];
let bytes = child.pty().read(&mut buf).unwrap();
buf.truncate(bytes);
assert_eq!(&buf[..], b"\x1b7\x1b[?47h\x1b[2J\x1b[H\x1b[?25h");
} else {
std::thread::sleep(std::time::Duration::from_millis(100));
}
f(child.pty_mut());
if self.screenguard {
assert!(read_ready(child.pty().as_raw_fd()));
let mut buf = vec![0u8; 1024];
let bytes = child.pty().read(&mut buf).unwrap();
buf.truncate(bytes);
assert_eq!(&buf[..], b"\x1b[?47l\x1b8\x1b[?25h");
}
let status = child.wait().unwrap();
assert!(status.success());
}
}
#[allow(dead_code)]
#[track_caller]
pub fn read(f: &mut std::fs::File) -> Vec<u8> {
assert!(read_ready(f.as_raw_fd()));
let mut buf = vec![0u8; 1024];
let bytes = f.read(&mut buf).unwrap();
buf.truncate(bytes);
buf
}
#[allow(dead_code)]
#[track_caller]
pub fn read_line(f: &mut std::io::BufReader<&mut std::fs::File>) -> Vec<u8> {
assert!(!f.buffer().is_empty() || read_ready(f.get_ref().as_raw_fd()));
let mut buf = vec![];
f.read_until(b'\n', &mut buf).unwrap();
buf
}
#[allow(dead_code)]
pub fn read_ready(fd: std::os::unix::io::RawFd) -> bool {
let mut set = nix::sys::select::FdSet::new();
set.insert(fd);
let timeout = libc::timeval {
tv_sec: 0,
tv_usec: 100_000,
};
let timeout = &mut nix::sys::time::TimeVal::from(timeout);
match nix::sys::select::select(
None,
Some(&mut set),
None,
None,
Some(timeout),
) {
Ok(n) => {
if n > 0 {
set.contains(fd)
} else {
false
}
}
Err(_) => false,
}
}
|
