proc-heim 0.1.5

Library for running and managing short-lived and long-lived processes using asynchronous API
Documentation 
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use std::{env, time::Duration};

use proc_heim::{
    manager::{LogsQuery, PROCESS_DATA_DIR_ENV_NAME},
    model::{
        command::{Cmd, CmdOptions, LoggingType},
        Runnable,
    },
};

use crate::common::create_process_manager;

mod common;

#[tokio::test]
async fn should_get_inherited_variable() {
    let env_name = "TEST_VAR_1";
    let env_value = "just a value";

    env::set_var(env_name, env_value);

    let cmd = get_env_cmd(env_name);
    let actual_env_value = spawn_and_read_first_log(cmd).await;
    assert_eq!(env_value, actual_env_value.unwrap());
}

#[tokio::test]
async fn should_set_environment_variable() {
    let env_name = "TEST_VAR";
    let env_value = "some text";

    let mut cmd = get_env_cmd(env_name);
    cmd.options_mut().add_env(env_name, env_value);
    let actual_env_value = spawn_and_read_first_log(cmd).await;

    assert_eq!(env_value, actual_env_value.unwrap());
}

#[tokio::test]
async fn should_clear_all_env_vars_without_process_data_dir_env() {
    let mut cmd = Cmd::new("env");
    let mut options = CmdOptions::with_logging(LoggingType::StdoutOnly);
    options.clear_inherited_envs(true);
    cmd.set_options(options);

    let logs = spawn_and_read_logs(cmd).await;
    assert_eq!(1, logs.len());
    assert!(logs.first().unwrap().contains(PROCESS_DATA_DIR_ENV_NAME));
}

#[tokio::test]
async fn should_remove_environment_variable() {
    let env_name = "TEST_VAR";
    let env_value = "Hey";

    env::set_var(env_name, env_value);

    let mut cmd = get_env_cmd(env_name);
    cmd.options_mut().remove_env(env_name);
    let actual_env_value = spawn_and_read_first_log(cmd).await;

    assert!(actual_env_value.is_none());
}

#[tokio::test]
async fn should_update_environment_variable() {
    let env_name = "PATH";
    let env_value_old = env!("PATH");
    let env_value_new = format!("{env_value_old}:/some/dir");
    let mut cmd = get_env_cmd(env_name);
    cmd.options_mut().add_env(env_name, &env_value_new);
    let actual_env_value = spawn_and_read_first_log(cmd).await;

    assert_eq!(env_value_new, actual_env_value.unwrap());
}

fn get_env_cmd(env: &str) -> Cmd {
    let options = CmdOptions::with_logging(LoggingType::StdoutOnly);
    Cmd::with_args_and_options("printenv", [env], options)
}

async fn spawn_and_read_logs(runnable: impl Runnable) -> Vec<String> {
    let (_dir, handle) = create_process_manager();
    let handle = handle.spawn_with_handle(runnable).await.unwrap();
    let _ = handle.wait(Duration::from_millis(20)).await;
    handle
        .get_logs_stdout(LogsQuery::fetch_all())
        .await
        .unwrap()
}

async fn spawn_and_read_first_log(runnable: impl Runnable) -> Option<String> {
    spawn_and_read_logs(runnable)
        .await
        .first()
        .map(|s| s.to_owned())
}