Reject non-regular RT kernel candidates

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/initramfs.rs b/tests/initramfs.rs
index b15c54f..f5a7b02 100644
--- a/tests/initramfs.rs
+++ b/tests/initramfs.rs
@@ -1,4 +1,5 @@
 use std::fs;
+use std::os::unix::fs::symlink;
 use std::path::Path;
 
 use alt_controller_image::initramfs::{
@@ -40,6 +41,20 @@ fn diagnoses_missing_or_ambiguous_rt_kernels() {
 }
 
 #[test]
+fn kernel_discovery_ignores_non_regular_vmlinuz_entries() {
+    let rootfs = tempdir().expect("rootfs directory");
+    let boot = rootfs.path().join("boot");
+    fs::create_dir(&boot).expect("boot directory");
+    fs::create_dir(boot.join("vmlinuz-6.12-rt-directory")).expect("misleading RT directory");
+    symlink("/not-a-kernel", boot.join("vmlinuz-6.12-rt-symlink")).expect("misleading RT symlink");
+    fs::write(boot.join("vmlinuz-6.12-rt-real"), "kernel").expect("RT kernel");
+
+    let kernel = KernelVersion::discover_rt(rootfs.path()).expect("discover regular RT kernel");
+
+    assert_eq!(kernel.as_str(), "6.12-rt-real");
+}
+
+#[test]
 fn make_initrd_adapter_uses_typed_chroot_arguments_and_records_output_digest() {
     let rootfs = tempdir().expect("rootfs directory");
     fs::create_dir(rootfs.path().join("boot")).expect("boot directory");