rust-template/apps/server/tests/config.rs

use std::sync::Mutex;

use server::AppConfig;
use server::config::redact_db_url;

static ENV_LOCK: Mutex<()> = Mutex::new(());

#[test]
fn default_config_binds_loopback() {
    let config = AppConfig::default();
    let addr = config.socket_addr().expect("addr");
    assert_eq!(addr.port(), 8080);
    assert!(addr.ip().is_loopback());
}

#[test]
fn layered_config_loads_from_workspace() {
    let _guard = ENV_LOCK.lock().expect("env lock");
    let config = AppConfig::load().expect("load config from workspace");
    assert_eq!(config.server.host, "127.0.0.1");
    assert_eq!(config.frontend.host, "127.0.0.1");
    assert!(!config.database.url.is_empty());
}

#[test]
fn app_double_underscore_overrides_database_url() {
    let _guard = ENV_LOCK.lock().expect("env lock");
    unsafe {
        std::env::set_var("APP__DATABASE__URL", "postgres://jared:secret@127.0.0.1:5432/mydb");
    }
    let config = AppConfig::load().expect("load config with env override");
    unsafe {
        std::env::remove_var("APP__DATABASE__URL");
    }
    assert_eq!(config.database.url, "postgres://jared:secret@127.0.0.1:5432/mydb");
}

#[test]
fn redact_db_url_strips_password() {
    assert_eq!(
        redact_db_url("postgres://app:hunter2@127.0.0.1:5432/app"),
        "postgres://app@127.0.0.1:5432/app"
    );
}