From 5f4ad4bb1e78d5311b692dccb153259b9c6be395 Mon Sep 17 00:00:00 2001
From: Muminul Islam <muislam@microsoft.com>
Date: Sat, 21 Mar 2026 16:08:51 -0700
Subject: [PATCH] tests: extract _test_dmi_serial_number to tests_wrappers

Move the DMI serial number test logic from integration.rs
into a shared _test_dmi_serial_number() function in
tests_wrappers.rs. The original test now delegates to
this shared function, enabling reuse by CVM tests.

Signed-off-by: Muminul Islam <muislam@microsoft.com>
---
 .../tests/common/tests_wrappers.rs            | 30 +++++++++++++++++
 cloud-hypervisor/tests/integration.rs         | 32 ++-----------------
 2 files changed, 32 insertions(+), 30 deletions(-)

diff --git a/cloud-hypervisor/tests/common/tests_wrappers.rs b/cloud-hypervisor/tests/common/tests_wrappers.rs
index 2663a6499..053cdf441 100644
--- a/cloud-hypervisor/tests/common/tests_wrappers.rs
+++ b/cloud-hypervisor/tests/common/tests_wrappers.rs
@@ -2180,3 +2180,33 @@ pub fn _test_split_irqchip(guest: &Guest) {
 
     handle_child_output(r, &output);
 }
+
+#[cfg(target_arch = "x86_64")]
+pub(crate) fn _test_dmi_serial_number(guest: &Guest) {
+    let mut child = GuestCommand::new(guest)
+        .default_cpus()
+        .default_memory()
+        .default_kernel_cmdline_with_platform(Some("serial_number=a=b;c=d"))
+        .default_disks()
+        .default_net()
+        .capture_output()
+        .spawn()
+        .unwrap();
+
+    let r = std::panic::catch_unwind(|| {
+        guest.wait_vm_boot().unwrap();
+
+        assert_eq!(
+            guest
+                .ssh_command("sudo cat /sys/class/dmi/id/product_serial")
+                .unwrap()
+                .trim(),
+            "a=b;c=d"
+        );
+    });
+
+    kill_child(&mut child);
+    let output = child.wait_with_output().unwrap();
+
+    handle_child_output(r, &output);
+}
diff --git a/cloud-hypervisor/tests/integration.rs b/cloud-hypervisor/tests/integration.rs
index 1b6562fab..9cb2dc209 100644
--- a/cloud-hypervisor/tests/integration.rs
+++ b/cloud-hypervisor/tests/integration.rs
@@ -1738,37 +1738,9 @@ mod common_parallel {
     #[test]
     #[cfg(target_arch = "x86_64")]
     fn test_dmi_serial_number() {
-        let disk_config = UbuntuDiskConfig::new(JAMMY_IMAGE_NAME.to_string());
-        let guest = Guest::new(Box::new(disk_config));
+        let guest = basic_regular_guest!(JAMMY_IMAGE_NAME);
 
-        let mut child = GuestCommand::new(&guest)
-            .default_cpus()
-            .default_memory()
-            .args(["--kernel", direct_kernel_boot_path().to_str().unwrap()])
-            .args(["--cmdline", DIRECT_KERNEL_BOOT_CMDLINE])
-            .args(["--platform", "serial_number=a=b;c=d"])
-            .default_disks()
-            .default_net()
-            .capture_output()
-            .spawn()
-            .unwrap();
-
-        let r = std::panic::catch_unwind(|| {
-            guest.wait_vm_boot().unwrap();
-
-            assert_eq!(
-                guest
-                    .ssh_command("sudo cat /sys/class/dmi/id/product_serial")
-                    .unwrap()
-                    .trim(),
-                "a=b;c=d"
-            );
-        });
-
-        kill_child(&mut child);
-        let output = child.wait_with_output().unwrap();
-
-        handle_child_output(r, &output);
+        _test_dmi_serial_number(&guest);
     }
 
     #[test]