char/avril

git clone https://git.t4t.associates/char/avril

Charlotte Somsnapshot: embed shared main and worker startup in the CLI688e96e2026-10-19

#![cfg(windows)]
mod common;

const PRELUDE: &str = r#"
const assert=(value,message)=>{if(!value)throw Error(message)};
async function rejects(action,name){try{await action()}catch(error){assert(error.name===name,'Expected '+name+', got '+error);return error}throw Error('Expected '+name)}
"#;

fn pass(source: &str) {
    common::run(&format!("{PRELUDE}\n{source}"), b"");
}

#[test]
fn console_programs_run_with_exit_codes_env_and_input() {
    pass(
        r#"
        import {run,runSync} from 'avril:std';
        for (const method of [run, runSync]) {
            const hello = await method('cmd', {args:['/d','/c','echo hello'], encoding:'utf-8'});
            assert(hello.stdout === 'hello\r\n', 'PATH search appends .exe: ' + JSON.stringify(hello.stdout));
            const failed = await method('cmd.exe', {args:['/d','/c','exit 3'], check:false});
            assert(failed.code === 3 && failed.signal === null, 'exit code');
            const env = await method('cmd.exe', {args:['/d','/c','echo %AVRIL_PROCESS_VALUE%'], env:{AVRIL_PROCESS_VALUE:'set'}, encoding:'utf-8'});
            assert(env.stdout === 'set\r\n', 'explicit environment');
            const found = await method('findstr', {args:['x'], input:'axb\r\nnope\r\n', encoding:'utf-8'});
            assert(found.stdout === 'axb\r\n', 'piped stdin');
        }
    "#,
    );
}

#[test]
fn batch_files_need_an_explicit_shell() {
    let dir = tempfile::tempdir().unwrap();
    std::fs::write(dir.path().join("tool.cmd"), "@echo implicit\r\n").unwrap();
    // Only a verbatim path keeps the trailing dot and space literal.
    let literal = dir.path().canonicalize().unwrap().join("tool.cmd. ");
    std::fs::write(literal, "@echo implicit\r\n").unwrap();
    let source = format!(
        r#"
        import {{run}} from 'avril:std';
        const cwd = {};
        await rejects(()=>run('./tool.cmd', {{cwd}}), 'NotSupported');
        await rejects(()=>run('./tool.cmd. ', {{cwd}}), 'NotSupported');
        const explicit = await run('cmd.exe', {{args:['/d','/c','tool.cmd'], cwd, encoding:'utf-8'}});
        assert(explicit.stdout === 'implicit\r\n', 'explicit cmd.exe');
    "#,
        serde_json::to_string(dir.path()).unwrap()
    );
    pass(&source);
}

#[test]
fn group_termination_covers_the_job() {
    // The grandchild holds the output pipe; only terminating the whole job
    // lets the pipes close well before ping would finish.
    pass(
        r#"
        import {run} from 'avril:std';
        const started = Date.now();
        try {
            await run('cmd.exe', {args:['/d','/c','ping -n 30 127.0.0.1'], timeoutMs:300});
            throw Error('expected timeout');
        } catch (error) {
            assert(error.name === 'ProcessTimeoutError', 'timeout: ' + error);
        }
        assert(Date.now() - started < 4000, 'grandchild kept the pipe open');
    "#,
    );
}

#[test]
fn only_terminating_signals_and_no_terminals() {
    pass(
        r#"
        import {spawn} from 'avril:std';
        await rejects(()=>spawn('cmd.exe', {termination:{signal:'SIGUSR1'}}), 'NotSupported');
        await rejects(()=>spawn('cmd.exe', {terminal:{}}), 'NotSupported');
        const child = spawn('ping', {args:['-n','30','127.0.0.1'], stdout:'null'});
        await rejects(()=>child.kill('SIGHUP'), 'NotSupported');
        assert(child.kill('SIGTERM') === true, 'terminated');
        const status = await child.status;
        assert(status.code === 1 && status.signal === null, 'terminated exit status');
    "#,
    );
}

#[test]
fn respelled_entries_meet_the_same_grants() {
    let system = std::path::Path::new(&std::env::var_os("SystemRoot").unwrap()).join("System32");
    let dir = tempfile::tempdir().unwrap();
    let source = format!(
        r#"
        import {{run}} from 'avril:std';
        await rejects(()=>run('CMD', {{args:['/d','/c','exit']}}), 'PermissionDenied');
        await rejects(()=>run({}, {{args:['/d','/c','exit']}}), 'PermissionDenied');
    "#,
        serde_json::to_string(&system.join("Cmd.Exe")).unwrap()
    );
    std::fs::write(dir.path().join("main.js"), format!("{PRELUDE}\n{source}")).unwrap();
    let output = common::wait(
        std::process::Command::new(env!("CARGO_BIN_EXE_avril"))
            .arg("run")
            .arg(format!("--deny-run={}", system.join("CMD.EXE").display()))
            .arg("main.js")
            .current_dir(dir.path())
            .stdin(std::process::Stdio::null())
            .stdout(std::process::Stdio::piped())
            .stderr(std::process::Stdio::piped())
            .spawn()
            .unwrap(),
    );
    assert!(
        output.status.success(),
        "{}",
        String::from_utf8_lossy(&output.stderr)
    );
}

#[test]
fn signal_listeners_are_not_supported() {
    pass(
        r#"
        import {addSignalListener, removeSignalListener} from 'avril:std';
        await rejects(() => addSignalListener('SIGUSR1', () => {}), 'NotSupported');
        removeSignalListener('SIGUSR1', () => {});
    "#,
    );
}