//! `wai-ingest --config <file> --check` (what `wai serve ingest --check` runs): the configuration
//! read by the gateway's own reader, as it starts from it, and nothing started; one it does not read
//! is refused, exit 1, with the reason.

use std::path::Path;
use std::process::{Command, Output, Stdio};

fn check(file: &Path) -> Output {
    Command::new(env!("CARGO_BIN_EXE_wai-ingest")).arg("--config").arg(file).arg("--check").stdin(Stdio::null()).output().expect("wai-ingest runs")
}

#[test]
fn check_reads_the_configuration_and_starts_nothing() {
    let example = Path::new(env!("CARGO_MANIFEST_DIR")).join("gateway.example.toml");
    let o = check(&example);
    assert!(o.status.success(), "{}", String::from_utf8_lossy(&o.stderr));
    assert_eq!(String::from_utf8_lossy(&o.stdout), format!("wai-ingest: {} reads as the gateway would start from it\n", example.display()));
    let d = std::env::temp_dir().join(format!("wai-ingest-check-{}", std::process::id()));
    std::fs::create_dir_all(&d).unwrap();
    let text = std::fs::read_to_string(&example).unwrap();
    let bad = d.join("bad.toml");
    std::fs::write(&bad, text.replacen("listen = \"127.0.0.1:8088\"", "listen = \"nowhere\"", 1)).unwrap();
    let o = check(&bad);
    assert_eq!(o.status.code(), Some(1), "{}", String::from_utf8_lossy(&o.stdout));
    assert!(o.stdout.is_empty() && String::from_utf8_lossy(&o.stderr).starts_with(&format!("wai-ingest: {}: ", bad.display())), "{}", String::from_utf8_lossy(&o.stderr));
    let o = check(&d.join("gone.toml"));
    assert_eq!(o.status.code(), Some(1));
    let _ = std::fs::remove_dir_all(&d);
}