use assert_cmd::prelude::*; // Add methods on commands
use predicates::prelude::*; // Used for writing assertions
use std::process::Command; // Run programs

#[test]
fn help() -> Result<(), Box<dyn std::error::Error>> {
    let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;

    cmd.arg("-h");
    cmd.assert().success();

    Ok(())
}