From 915fcc5efbf45d8adee870cfbe2a25e466454a2f Mon Sep 17 00:00:00 2001
From: Hermes Agent <hermes@localhost>
Date: Wed, 12 Aug 2026 01:06:37 +0000
Subject: Isolate Hasher behind typed installer adapter

---
 tests/package_installer.rs | 72 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 tests/package_installer.rs

(limited to 'tests/package_installer.rs')

diff --git a/tests/package_installer.rs b/tests/package_installer.rs
new file mode 100644
index 0000000..622d378
--- /dev/null
+++ b/tests/package_installer.rs
@@ -0,0 +1,72 @@
+use std::path::PathBuf;
+
+use alt_controller_image::hasher::{CommandRunner, HasherInstaller, Invocation};
+use alt_controller_image::package_installer::{AptConfig, PackageInstaller, PackageRequest};
+
+#[derive(Default)]
+struct RecordingRunner {
+    invocations: std::cell::RefCell<Vec<Invocation>>,
+}
+
+impl CommandRunner for RecordingRunner {
+    fn run(&self, invocation: Invocation) -> anyhow::Result<()> {
+        self.invocations.borrow_mut().push(invocation);
+        Ok(())
+    }
+}
+
+#[test]
+fn hasher_installer_passes_typed_request_to_initroot_and_install_commands() {
+    let runner = RecordingRunner::default();
+    let installer = HasherInstaller::new(runner);
+    let request = PackageRequest::new(
+        "/build/work",
+        AptConfig::new("profiles/apt.conf").expect("valid apt config path"),
+        ["basesystem", "make-initrd"],
+        ["^kernel-image-rt$"],
+    )
+    .expect("valid package request");
+
+    installer.install(&request).expect("installation succeeds");
+    let invocations = &installer.runner().invocations.borrow();
+
+    assert_eq!(
+        invocations.as_slice(),
+        [
+            Invocation::new(
+                "hsh",
+                [
+                    "--mountpoints=/proc",
+                    "--initroot-only",
+                    "--apt-config",
+                    "profiles/apt.conf",
+                    "--workdir",
+                    "/build/work",
+                ],
+            ),
+            Invocation::new(
+                "hsh-install",
+                [
+                    "--mountpoints=/proc",
+                    "--workdir",
+                    "/build/work",
+                    "^kernel-image-rt$",
+                    "basesystem",
+                    "make-initrd",
+                ],
+            ),
+        ]
+    );
+}
+
+#[test]
+fn package_request_rejects_empty_packages_and_unsafe_apt_config_paths() {
+    assert!(AptConfig::new("").is_err());
+    assert!(PackageRequest::new(
+        PathBuf::from("work"),
+        AptConfig::new("profiles/apt.conf").expect("valid apt config"),
+        ["basesystem", ""],
+        std::iter::empty::<&str>(),
+    )
+    .is_err());
+}
-- 
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