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tests: Refactor test_direct_kernel_boot into reusable helper

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Extract direct kernel boot test logic into a standalone
_test_direct_kernel_boot helper that accepts a Guest reference.
The helper boots a VM, validates CPU count and memory using
generic validate_cpu_count and validate_memory methods, and
asserts 12 MSI interrupts in /proc/interrupts.

Replace hardcoded kernel and cmdline arguments with
default_kernel_cmdline(). Update the test call site in
common_parallel to use GuestFactory and delegate to the new
helper, enabling reuse with different guest types.

Signed-off-by: Muminul Islam <muislam@microsoft.com>
This commit is contained in:
Muminul Islam
2026-03-07 15:55:24 -08:00
committed by Rob Bradford
parent 38dc35cc33
commit 3b56ec240a
1 changed files with 37 additions and 37 deletions
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74
cloud-hypervisor/tests/integration.rs
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@@ -2768,6 +2768,41 @@ fn _test_pci_multiple_segments(
handle_child_output(r, &output);
}
fn _test_direct_kernel_boot(guest: &Guest) {
let mut child = GuestCommand::new(guest)
.default_cpus()
.default_memory()
.default_kernel_cmdline()
.default_disks()
.default_net()
.capture_output()
.spawn()
.unwrap();
let r = std::panic::catch_unwind(|| {
guest.wait_vm_boot().unwrap();
guest.validate_cpu_count(None);
guest.validate_memory(None);
let grep_cmd = format!("grep -c {} /proc/interrupts", get_msi_interrupt_pattern());
assert_eq!(
guest
.ssh_command(&grep_cmd)
.unwrap()
.trim()
.parse::<u32>()
.unwrap_or_default(),
12
);
});
kill_child(&mut child);
let output = child.wait_with_output().unwrap();
handle_child_output(r, &output);
}
mod common_parallel {
use std::cmp;
use std::fs::{File, OpenOptions, copy};
@@ -3250,43 +3285,8 @@ mod common_parallel {
#[test]
fn test_direct_kernel_boot() {
let disk_config = UbuntuDiskConfig::new(JAMMY_IMAGE_NAME.to_string());
let guest = Guest::new(Box::new(disk_config));
let kernel_path = direct_kernel_boot_path();
let mut child = GuestCommand::new(&guest)
.default_cpus()
.default_memory()
.args(["--kernel", kernel_path.to_str().unwrap()])
.args(["--cmdline", DIRECT_KERNEL_BOOT_CMDLINE])
.default_disks()
.default_net()
.capture_output()
.spawn()
.unwrap();
let r = std::panic::catch_unwind(|| {
guest.wait_vm_boot().unwrap();
assert_eq!(guest.get_cpu_count().unwrap_or_default(), 1);
assert!(guest.get_total_memory().unwrap_or_default() > 480_000);
let grep_cmd = format!("grep -c {} /proc/interrupts", get_msi_interrupt_pattern());
assert_eq!(
guest
.ssh_command(&grep_cmd)
.unwrap()
.trim()
.parse::<u32>()
.unwrap_or_default(),
12
);
});
kill_child(&mut child);
let output = child.wait_with_output().unwrap();
handle_child_output(r, &output);
let guest = GuestFactory::new_regular_guest_factory().create_guest(Box::new(disk_config));
_test_direct_kernel_boot(&guest);
}
#[test]