beerpsi_fsdecrypt/tests/cli.rs

//! End-to-end CLI tests that run the actual built binary.

use std::process::Command;

/// `--help` must exit successfully and print the usage/options. Run with
/// `cargo test -- --nocapture` to see the help text in the test output.
#[test]
fn help_shows_usage_and_options() {
    let output = Command::new(env!("CARGO_BIN_EXE_fsdecrypt"))
        .arg("--help")
        .output()
        .expect("failed to run fsdecrypt --help");

    let stdout = String::from_utf8_lossy(&output.stdout);
    println!("\n--- fsdecrypt --help ---\n{stdout}");

    assert!(output.status.success(), "--help should exit 0");
    assert!(stdout.contains("Usage"), "help should show a usage line");
    assert!(stdout.contains("--no-extract"), "help should list options");
    assert!(
        stdout.contains("decryptor for some SEGA containers"),
        "help should show the about text"
    );
}