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  cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc  zebra.txt\n",
        "sha256  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa  alpha.txt\n",
        "blake3  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb  beta.bin\n",
    )).unwrap();
    p
}

#[test]
fn test_sort_by_path_default() {
    let dir = TempDir::new().unwrap();
    let manifest = write_manifest(&dir);
    let out = Command::cargo_bin("blazehash").unwrap()
        .args(["sort", manifest.to_str().unwrap()])
        .output().unwrap();
    assert!(out.status.success());
    let stdout = String::from_utf8_lossy(&out.stdout);
    let data: Vec<&str> = stdout.lines()
        .filter(|l| !l.trim().is_empty() && !l.trim().starts_with('#'))
        .collect();
    assert_eq!(data.len(), 3);
    let pos_alpha = data.iter().position(|l| l.contains("alpha.txt")).unwrap();
    let pos_beta  = data.iter().position(|l| l.contains("beta.bin")).unwrap();
    let pos_zebra = data.iter().position(|l| l.contains("zebra.txt")).unwrap();
    assert!(pos_alpha < pos_beta, "alpha must come before beta");
    assert!(pos_beta  < pos_zebra, "beta must come before zebra");
}

#[test]
fn test_sort_by_hash() {
    let dir = TempDir::new().unwrap();
    let manifest = write_manifest(&dir);
    let out = Command::cargo_bin("blazehash").unwrap()
        .args(["sort", manifest.to_str().unwrap(), "--sort-by", "hash"])
        .output().unwrap();
    assert!(out.status.success());
    let stdout = String::from_utf8_lossy(&out.stdout);
    let data: Vec<&str> = stdout.lines()
        .filter(|l| !l.trim().is_empty() && !l.trim().starts_with('#'))
        .collect();
    let pos_a = data.iter().position(|l| l.contains("alpha.txt")).unwrap();
    let pos_b = data.iter().position(|l| l.contains("beta.bin")).unwrap();
    let pos_c = data.iter().position(|l| l.contains("zebra.txt")).unwrap();
    assert!(pos_a < pos_b && pos_b < pos_c, "entries must be sorted by hash");
}

#[test]
fn test_sort_preserves_headers() {
    let dir = TempDir::new().unwrap();
    let manifest = write_manifest(&dir);
    let out = Command::cargo_bin("blazehash").unwrap()
        .args(["sort", manifest.to_str().unwrap()])
        .output().unwrap();
    assert!(out.status.success());
    let stdout = String::from_utf8_lossy(&out.stdout);
    let first_line = stdout.lines().next().unwrap_or("");
    assert!(first_line.starts_with("##"), "first line must be a header comment");
}

#[test]
fn test_sort_output_to_file() {
    let dir = TempDir::new().unwrap();
    let manifest = write_manifest(&dir);
    let out_path = dir.path().join("sorted.hash");
    Command::cargo_bin("blazehash").unwrap()
        .args(["sort", manifest.to_str().unwrap(), "-o", out_path.to_str().unwrap()])
        .assert().success();
    let content = fs::read_to_string(&out_path).unwrap();
    assert!(content.contains("alpha.txt"));
    assert!(content.contains("beta.bin"));
}

#[test]
fn test_sort_by_algo() {
    let dir = TempDir::new().unwrap();
    let manifest = write_manifest(&dir);
    let out = Command::cargo_bin("blazehash").unwrap()
        .args(["sort", manifest.to_str().unwrap(), "--sort-by", "algo"])
        .output().unwrap();
    assert!(out.status.success());
    let stdout = String::from_utf8_lossy(&out.stdout);
    let data: Vec<&str> = stdout.lines()
        .filter(|l| !l.trim().is_empty() && !l.trim().starts_with('#'))
        .collect();
    let pos_blake3 = data.iter().position(|l| l.contains("beta.bin")).unwrap();
    let pos_sha256_first = data.iter().position(|l| l.contains("sha256")).unwrap();
    assert!(pos_blake3 < pos_sha256_first, "blake3 must sort before sha256");
}