blazehash 0.2.5

Forensic file hasher — hashdeep for the modern era, BLAKE3 by default
Documentation 
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use assert_cmd::Command;
use tempfile::TempDir;
use std::fs;

fn write_manifest(dir: &TempDir) -> std::path::PathBuf {
    let p = dir.path().join("case.hash");
    fs::write(&p, concat!(
        "## case: CASE-001\n",
        "sha256  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa  /mnt/evidence/docs/contract.pdf\n",
        "sha256  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb  /mnt/evidence/images/photo.jpg\n",
    )).unwrap();
    p
}

#[test]
fn test_normalize_strip_prefix() {
    let dir = TempDir::new().unwrap();
    let manifest = write_manifest(&dir);
    let out = Command::cargo_bin("blazehash").unwrap()
        .args(["normalize", manifest.to_str().unwrap(),
               "--strip-prefix", "/mnt/evidence/"])
        .output().unwrap();
    assert!(out.status.success());
    let stdout = String::from_utf8_lossy(&out.stdout);
    assert!(stdout.contains("docs/contract.pdf"), "should strip prefix");
    assert!(!stdout.contains("/mnt/evidence/"), "prefix must be removed");
}

#[test]
fn test_normalize_add_prefix() {
    let dir = TempDir::new().unwrap();
    let manifest = write_manifest(&dir);
    let out = Command::cargo_bin("blazehash").unwrap()
        .args(["normalize", manifest.to_str().unwrap(),
               "--add-prefix", "/case/001/"])
        .output().unwrap();
    assert!(out.status.success());
    let stdout = String::from_utf8_lossy(&out.stdout);
    assert!(stdout.contains("/case/001/"), "should add prefix");
}

#[test]
fn test_normalize_strip_and_add_prefix() {
    let dir = TempDir::new().unwrap();
    let manifest = write_manifest(&dir);
    let out = Command::cargo_bin("blazehash").unwrap()
        .args(["normalize", manifest.to_str().unwrap(),
               "--strip-prefix", "/mnt/evidence/",
               "--add-prefix", "/case/001/"])
        .output().unwrap();
    assert!(out.status.success());
    let stdout = String::from_utf8_lossy(&out.stdout);
    assert!(stdout.contains("/case/001/docs/contract.pdf"), "strip+add should rebase paths");
}

#[test]
fn test_normalize_preserves_headers() {
    let dir = TempDir::new().unwrap();
    let manifest = write_manifest(&dir);
    let out = Command::cargo_bin("blazehash").unwrap()
        .args(["normalize", manifest.to_str().unwrap(),
               "--strip-prefix", "/mnt/"])
        .output().unwrap();
    assert!(out.status.success());
    let stdout = String::from_utf8_lossy(&out.stdout);
    assert!(stdout.contains("## case: CASE-001"), "headers must be preserved");
}

#[test]
fn test_normalize_to_file() {
    let dir = TempDir::new().unwrap();
    let manifest = write_manifest(&dir);
    let out_path = dir.path().join("normalized.hash");
    Command::cargo_bin("blazehash").unwrap()
        .args(["normalize", manifest.to_str().unwrap(),
               "--strip-prefix", "/mnt/evidence/",
               "-o", out_path.to_str().unwrap()])
        .assert().success();
    let content = fs::read_to_string(&out_path).unwrap();
    assert!(content.contains("docs/contract.pdf"));
    assert!(!content.contains("/mnt/evidence/"));
}