From 754972b95ba2fabc082aed387c246e632a8d7434 Mon Sep 17 00:00:00 2001
From: Hermes Agent <hermes@localhost>
Date: Wed, 12 Aug 2026 03:36:47 +0000
Subject: Preserve rootfs hardlink facts in manifests

---
 tests/compare.rs | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

(limited to 'tests/compare.rs')

diff --git a/tests/compare.rs b/tests/compare.rs
index 7dd44e2..a175195 100644
--- a/tests/compare.rs
+++ b/tests/compare.rs
@@ -3,7 +3,7 @@ use alt_controller_image::archive::NativeTarWriter;
 use alt_controller_image::manifest::{
     ArchiveMemberRecord, ArtifactManifest, FileRecord, InitrdRecord, PackageRecord, ServiceRecord,
 };
-use std::fs;
+use std::fs::{self, hard_link};
 use std::io::Cursor;
 use std::os::unix::fs::symlink;
 use tempfile::tempdir;
@@ -253,6 +253,32 @@ fn collects_hardlink_targets_from_an_archive_for_semantic_comparison() {
     );
 }
 
+#[test]
+fn rootfs_collection_preserves_hardlink_facts_like_archive_collection() {
+    let fixture = tempdir().expect("temporary directory");
+    let rootfs = fixture.path().join("rootfs");
+    fs::create_dir_all(rootfs.join("usr/bin")).expect("create binary directory");
+    fs::write(rootfs.join("usr/bin/controller"), "controller\n").expect("write binary");
+    hard_link(
+        rootfs.join("usr/bin/controller"),
+        rootfs.join("usr/bin/controller-link"),
+    )
+    .expect("create hardlink");
+    let artifact = fixture.path().join("controller.tar");
+    NativeTarWriter::new()
+        .write(&rootfs, &artifact)
+        .expect("write native archive");
+
+    let rootfs_manifest = ArtifactManifest::collect(&rootfs, vec![], None, &artifact)
+        .expect("collect rootfs facts");
+    let archive_manifest = ArtifactManifest::collect_archive(&artifact).expect("collect archive facts");
+
+    assert_eq!(rootfs_manifest.files, archive_manifest.files);
+    assert!(rootfs_manifest.files.iter().any(|record| {
+        record == &FileRecord::hardlink("usr/bin/controller-link", "usr/bin/controller")
+    }));
+}
+
 #[test]
 fn normalizes_dot_prefixed_paths_from_a_legacy_tree_archive() {
     let fixture = tempdir().expect("temporary directory");
-- 
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