run-kit 0.9.1

Universal multi-language runner and smart REPL
Documentation 
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use assert_cmd::Command;
use predicates::prelude::*;
use run::engine::LanguageEngine;

fn run_binary() -> Command {
    Command::new(assert_cmd::cargo::cargo_bin!("run"))
}

fn python_available() -> bool {
    run::engine::PythonEngine::new().validate().is_ok()
}

#[test]
fn help_lists_workflow_subcommands() {
    run_binary()
        .arg("--help")
        .assert()
        .success()
        .stdout(predicate::str::contains("Workflow commands:"))
        .stdout(predicate::str::contains("run doctor"))
        .stdout(predicate::str::contains("run cache --stats"))
        .stdout(predicate::str::contains("run alias list"))
        .stdout(predicate::str::contains("run share <file>"));
}

#[test]
fn alias_command_lists_builtin_aliases_and_rejects_mutation() {
    run_binary()
        .args(["alias", "list"])
        .assert()
        .success()
        .stdout(predicate::str::contains("Alias"))
        .stdout(predicate::str::contains("py"))
        .stdout(predicate::str::contains("python"));

    run_binary()
        .args(["alias", "add", "p", "python"])
        .assert()
        .failure()
        .stderr(predicate::str::contains(
            "custom language aliases are not supported yet",
        ));
}

#[test]
fn snippet_lists_and_emits_template() {
    run_binary()
        .args(["snippet", "python", "--list"])
        .assert()
        .success()
        .stdout(predicate::str::contains("http-server"));

    run_binary()
        .args(["snippet", "python", "http-server"])
        .assert()
        .success()
        .stdout(predicate::str::contains("ThreadingHTTPServer"));
}

#[test]
fn cache_stats_and_clear_work() {
    run_binary()
        .args(["cache", "--stats"])
        .assert()
        .success()
        .stdout(predicate::str::contains("entries:"));

    run_binary()
        .args(["cache", "--clear"])
        .assert()
        .success()
        .stdout(predicate::str::contains("cache cleared"));
}

#[test]
fn fmt_unsupported_file_exits_two() {
    let file = tempfile::NamedTempFile::new().expect("temp file");
    run_binary()
        .args(["fmt", file.path().to_str().expect("utf8 path")])
        .assert()
        .code(2)
        .stderr(predicate::str::contains("No formatter available"));
}

#[test]
fn doctor_returns_documented_status_code() {
    run_binary()
        .arg("doctor")
        .assert()
        .code(predicate::in_iter([0, 1]))
        .stdout(predicate::str::contains("Language"));
}

#[test]
fn json_output_wraps_execution_result() {
    if !python_available() {
        return;
    }

    let output = run_binary()
        .args(["--json", "python", "-c", "print('json-ok')"])
        .assert()
        .success()
        .get_output()
        .stdout
        .clone();
    let value: serde_json::Value = serde_json::from_slice(&output).expect("valid json");
    assert_eq!(value["language"], "python");
    assert_eq!(
        value["stdout"].as_str().unwrap_or("").replace("\r\n", "\n"),
        "json-ok\n"
    );
    assert_eq!(value["exit_code"], 0);
}

#[test]
fn timeout_exits_with_124() {
    if !python_available() {
        return;
    }

    run_binary()
        .args([
            "--timeout",
            "1",
            "python",
            "-c",
            "import time; time.sleep(5)",
        ])
        .assert()
        .code(124)
        .stderr(predicate::str::contains("Execution timed out after 1s"));
}

#[test]
fn default_timeout_is_unlimited() {
    if !python_available() {
        return;
    }

    run_binary()
        .args(["python", "-c", "print('no-timeout')"])
        .assert()
        .success()
        .stdout(predicate::str::contains("no-timeout"));
}