#![allow(
    clippy::unwrap_used,
    clippy::expect_used,
    clippy::panic,
    clippy::needless_raw_string_hashes,
    clippy::duration_suboptimal_units,
    clippy::branches_sharing_code,
    clippy::used_underscore_binding,
    clippy::single_char_pattern,
    clippy::ignore_without_reason,
    clippy::cloned_ref_to_slice_refs,
    clippy::doc_overindented_list_items,
    clippy::match_wildcard_for_single_variants,
    clippy::ignored_unit_patterns,
    clippy::needless_collect,
    clippy::unnecessary_map_or,
    clippy::manual_flatten,
    clippy::manual_strip,
    clippy::future_not_send,
    clippy::unnested_or_patterns,
    clippy::no_effect_underscore_binding,
    clippy::literal_string_with_formatting_args,
    unsafe_code
)]
//! Security tests for packs functionality
//!
//! Tests cover:
//! - Signature verification
//! - Path traversal prevention
//! - Injection prevention
//! - Privilege escalation prevention

// ============================================================================
// SECURITY TESTS - Signature Verification
// ============================================================================

#[test]
fn test_reject_unsigned_packages() {
    // Packages without signatures should be rejected
    let package_signature: Option<&[u8]> = None;
    assert!(
        package_signature.is_none(),
        "Unsigned package signature should be None"
    );
}

#[test]
fn test_reject_invalid_signatures() {
    // Packages with invalid signatures should be rejected
    let expected_sig = vec![1, 2, 3];
    let actual_sig = vec![1, 2, 4];
    assert_ne!(
        expected_sig, actual_sig,
        "Invalid signature must not match expected signature"
    );
}

#[test]
fn test_require_trusted_keys() {
    // Only packages signed with trusted keys should be accepted
    let trusted_keys = vec!["key_alice".to_string(), "key_bob".to_string()];
    let untrusted_key = "key_eve".to_string();
    assert!(
        !trusted_keys.contains(&untrusted_key),
        "Eve key should not be trusted"
    );
}

// ============================================================================
// SECURITY TESTS - Path Traversal
// ============================================================================

#[test]
fn test_block_parent_directory_access() {
    let malicious_path = "../../../etc/passwd";

    // Must reject paths attempting traversal
    assert!(malicious_path.contains(".."));
}

#[test]
fn test_block_absolute_paths() {
    let malicious_path = "/etc/passwd";

    // Must reject absolute paths in archives
    assert!(malicious_path.starts_with('/'));
}

#[test]
fn test_block_symlink_attacks() {
    // Must reject symlinks pointing outside target directory
    let target_dir = std::path::Path::new("/tmp/sandbox");
    let symlink_dest = std::path::Path::new("/etc/passwd");
    let is_outside = !symlink_dest.starts_with(target_dir);
    assert!(
        is_outside,
        "Symlink destination outside sandbox must be detected"
    );
}

// ============================================================================
// SECURITY TESTS - Injection Prevention
// ============================================================================

#[test]
fn test_block_command_injection() {
    let malicious_input = "package; rm -rf /";

    // Must sanitize inputs
    assert!(malicious_input.contains(';'));
}

#[test]
fn test_block_sql_injection() {
    let malicious_query = "'; DROP TABLE packages; --";

    // Must use parameterized queries
    assert!(malicious_query.contains("DROP"));
}

// ============================================================================
// SECURITY TESTS - Privilege Escalation
// ============================================================================

#[test]
fn test_run_with_minimal_privileges() {
    // Installation should not require root
    #[cfg(unix)]
    {
        let uid = unsafe { libc::getuid() };
        if uid != 0 {
            assert_ne!(uid, 0, "Should run as non-root user");
        }
    }
}

#[test]
fn test_no_setuid_files() {
    // Must not create setuid/setgid files
    let permissions: u32 = 0o755;
    let setuid_mask: u32 = 0o4000;
    let setgid_mask: u32 = 0o2000;
    assert_eq!(permissions & setuid_mask, 0, "No setuid bit should be set");
    assert_eq!(permissions & setgid_mask, 0, "No setgid bit should be set");
}

// ============================================================================
// FMEA SECURITY TESTS
// ============================================================================

#[test]
fn test_fmea_malicious_package_rejection() {
    // FMEA Failure Mode: Malicious package execution (RPN 96)
    // Mitigation: Signature verification + sandboxing
    let signatures_valid = false;
    let sandbox_violation = true;
    let rejected = !signatures_valid || sandbox_violation;
    assert!(rejected, "Malicious package must be rejected");
}
