From 3a47e14cbe6e15de0758c8bd4233a8d84ff80aa8 Mon Sep 17 00:00:00 2001
From: Hermes Agent <hermes@localhost>
Date: Wed, 12 Aug 2026 05:12:40 +0000
Subject: Reject archive outputs inside rootfs

---
 tests/archive.rs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'tests/archive.rs')

diff --git a/tests/archive.rs b/tests/archive.rs
index da3e66a..6f803ef 100644
--- a/tests/archive.rs
+++ b/tests/archive.rs
@@ -107,6 +107,23 @@ fn rejects_a_missing_rootfs() {
     assert!(error.to_string().contains("rootfs is not a directory"));
 }
 
+#[test]
+fn rejects_an_archive_output_inside_the_rootfs() {
+    let fixture = tempdir().expect("fixture directory");
+    let rootfs = fixture.path().join("rootfs");
+    fs::create_dir_all(rootfs.join("etc")).expect("create rootfs");
+    fs::write(rootfs.join("etc/controller.conf"), "controller=true\n").expect("write rootfs file");
+    let artifact = rootfs.join("controller.tar");
+
+    let error = NativeTarWriter::new()
+        .write(&rootfs, &artifact)
+        .expect_err("archive output inside rootfs must be rejected");
+
+    assert!(error.to_string().contains("archive output must not be inside rootfs"));
+    assert!(!artifact.exists());
+    assert!(!rootfs.join("controller.tar.partial").exists());
+}
+
 #[test]
 fn removes_partial_output_when_an_unsupported_entry_stops_packaging() {
     let fixture = tempdir().expect("fixture directory");
-- 
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