shelly-shell 0.5.0

A Rust based Unix style shell with a typed and structured language syntax.
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# Exercise real descendants, including ones which ignore TERM and terminal hangup.
let $fixture = $args[0]
let $result = run_process ["/bin/sh", "-c",
    'trap "" TERM; sleep 30 & echo "$$ $!"; wait'] [
    "timeout_ms": 250, "stdout_file": "${fixture}/group-pids", "stderr_file": "${fixture}/group-errors",
]
require (($result["error"] == ()) && $result["timed_out"] && ($result["signal"] == 9)) "watchdog did not escalate to SIGKILL"
let $pids: String
"${fixture}/group-pids" -> $pids
let $fields = $pids.trim.split " "
require ($fields.count == 2) "descendant did not start"
require_reaped $fields[0] "watchdog leader was not reaped"
require (!(process_group_alive $fields[0])) "watchdog left a live descendant"

let $terminal = open_terminal ["/bin/sh", "-c",
    'trap "" HUP TERM; sleep 30 & echo "$$ $!"; wait'] [:]
let $pids = ""
for $attempt in 0..50
{
    let $reply = terminal_read $terminal 100
    let $text = $reply["text"]
    $pids = "${pids}${text}"
    if $pids.contains "\n" { break }
}
let $fields = $pids.trim.split " "
require ($fields.count == 2) "terminal descendant did not start"
require (process_group_alive $fields[0]) "live group was misclassified as stopped"
let $status = terminal_close $terminal
require ($status["signal"] == 9) "terminal_close did not kill the supervised group"
require_reaped $fields[0] "terminal group leader was not reaped"
require (!(process_group_alive $fields[0])) "terminal_close left a live descendant"