keyhog-scanner 0.5.73

keyhog-scanner: high-performance SIMD-accelerated secret detection engine
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//! Migrated from src/static_intern.rs

use keyhog_scanner::testing::{seed_source_type_count, StaticInterner};
use std::sync::Arc;

#[test]
fn looks_up_seeded_source_types() {
    let intern = StaticInterner::from_detector_strings(std::iter::empty::<&str>());
    assert!(intern.lookup("filesystem").is_some());
    assert!(intern.lookup("git").is_some());
    assert!(intern.lookup("stdin").is_some());
}

#[test]
fn looks_up_detector_strings() {
    let intern = StaticInterner::from_detector_strings([
        "aws-access-key",
        "AWS Access Key",
        "aws",
        "github-pat",
        "GitHub PAT",
        "github",
    ]);
    assert!(intern.lookup("aws-access-key").is_some());
    assert!(intern.lookup("github").is_some());
    assert!(intern.lookup("not-a-detector").is_none());
}

#[test]
fn deduplicates_input() {
    // The same `service = "aws"` shows up across multiple
    // detectors. Builder must collapse them rather than reject.
    let intern = StaticInterner::from_detector_strings([
        "aws-access-key",
        "aws",
        "aws-session-token",
        "aws",
        "aws-secret-key",
        "aws",
    ]);
    assert!(intern.lookup("aws").is_some());
    assert_eq!(intern.lookup("aws"), intern.lookup("aws"));
}

/// WHY: detector metadata contains many duplicate service/name values; the frozen map must not retain capacity sized for the duplicate-heavy input stream.
#[test]
fn releases_duplicate_heavy_builder_capacity() {
    let intern = StaticInterner::from_detector_strings(std::iter::repeat("aws").take(4096));

    assert!(
        intern.capacity() < 1024,
        "deduplicated static metadata must not retain the 4096-row input capacity"
    );
}

/// Repeated metadata lookup must clone the map-key allocation directly. The
/// interner must not retain a second parallel arena owner for every string.
#[test]
fn returns_same_arc_on_repeated_lookup() {
    let intern = StaticInterner::from_detector_strings(["hello-detector"]);
    let a = intern.lookup("hello-detector").unwrap();
    assert_eq!(
        Arc::strong_count(&a),
        2,
        "one interner key and one caller must be the only Arc owners"
    );
    let b = intern.lookup("hello-detector").unwrap();
    assert!(Arc::ptr_eq(&a, &b));
    assert_eq!(
        Arc::strong_count(&a),
        3,
        "a second lookup adds only its caller-owned Arc"
    );
}

#[test]
fn empty_input_yields_empty_interner() {
    let intern = StaticInterner::from_detector_strings(std::iter::empty::<&str>());
    // Even an "empty" interner should still hold the seed source-types.
    assert_eq!(intern.len(), seed_source_type_count());
}

#[test]
fn unknown_lookup_returns_none() {
    let intern = StaticInterner::from_detector_strings(["x", "y", "z"]);
    assert!(intern.lookup("does-not-exist").is_none());
    assert!(intern.lookup("").is_none() || intern.lookup("").is_some());
}