add test process_oom_score_adj

Signed-off-by: Yusuke Sakurai <yusuke.sakurai@3-shake.com>

tests/contest/contest/src/main.rs

@@ -21,6 +21,7 @@ use crate::tests::linux_ns_itype::get_ns_itype_tests;
 use crate::tests::mounts_recursive::get_mounts_recursive_test;
 use crate::tests::no_pivot::get_no_pivot_test;
 use crate::tests::pidfile::get_pidfile_test;
+use crate::tests::process_oom_score_adj::get_process_oom_score_adj_test;
 use crate::tests::process_rlimits::get_process_rlimits_test;
 use crate::tests::readonly_paths::get_ro_paths_test;
 use crate::tests::scheduler::get_scheduler_test;
@@ -117,6 +118,7 @@ fn main() -> Result<()> {
     let devices = get_devices_test();
     let process_rlimtis = get_process_rlimits_test();
     let no_pivot = get_no_pivot_test();
+    let process_oom_score_adj = get_process_oom_score_adj_test();
 
     tm.add_test_group(Box::new(cl));
     tm.add_test_group(Box::new(cc));
@@ -142,6 +144,7 @@ fn main() -> Result<()> {
     tm.add_test_group(Box::new(devices));
     tm.add_test_group(Box::new(process_rlimtis));
     tm.add_test_group(Box::new(no_pivot));
+    tm.add_test_group(Box::new(process_oom_score_adj));
 
     tm.add_test_group(Box::new(io_priority_test));
     tm.add_cleanup(Box::new(cgroups::cleanup_v1));

tests/contest/contest/src/tests/mod.rs

@@ -11,6 +11,7 @@ pub mod linux_ns_itype;
 pub mod mounts_recursive;
 pub mod no_pivot;
 pub mod pidfile;
+pub mod process_oom_score_adj;
 pub mod process_rlimits;
 pub mod readonly_paths;
 pub mod scheduler;

tests/contest/contest/src/tests/process_oom_score_adj/mod.rs

@@ -0,0 +1,2 @@
+mod process_oom_score_adj_test;
+pub use process_oom_score_adj_test::get_process_oom_score_adj_test;

tests/contest/contest/src/tests/process_oom_score_adj/process_oom_score_adj_test.rs

@@ -0,0 +1,46 @@
+use anyhow::{Context, Ok, Result};
+use oci_spec::runtime::{ProcessBuilder, Spec, SpecBuilder};
+use rand::Rng;
+use test_framework::{test_result, Test, TestGroup, TestResult};
+
+use crate::utils::test_inside_container;
+
+fn generate_random_number() -> i32 {
+    let mut rng = rand::thread_rng();
+    rng.gen_range(300..=700)
+}
+
+fn create_spec() -> Result<Spec> {
+    let spec = SpecBuilder::default()
+        .process(
+            ProcessBuilder::default()
+                .args(vec![
+                    "runtimetest".to_string(),
+                    "process_oom_score_adj".to_string(),
+                ])
+                .oom_score_adj(generate_random_number())
+                .build()
+                .expect("error in creating process config"),
+        )
+        .build()
+        .context("failed to build spec")?;
+
+    Ok(spec)
+}
+
+fn process_oom_score_adj_test() -> TestResult {
+    let spec = test_result!(create_spec());
+    test_inside_container(spec, &|_| Ok(()))
+}
+
+pub fn get_process_oom_score_adj_test() -> TestGroup {
+    let mut process_oom_score_adj_test_group = TestGroup::new("process_oom_score_adj");
+
+    let test = Test::new(
+        "process_oom_score_adj",
+        Box::new(process_oom_score_adj_test),
+    );
+    process_oom_score_adj_test_group.add(vec![Box::new(test)]);
+
+    process_oom_score_adj_test_group
+}

tests/contest/runtimetest/src/main.rs

@@ -46,6 +46,7 @@ fn main() {
         "devices" => tests::validate_devices(&spec),
         "process_rlimits" => tests::validate_process_rlimits(&spec),
         "no_pivot" => tests::validate_rootfs(),
+        "process_oom_score_adj" => tests::validate_process_oom_score_adj(&spec),
         _ => eprintln!("error due to unexpected execute test name: {execute_test}"),
     }
 }

tests/contest/runtimetest/src/tests.rs

@@ -629,3 +629,18 @@ pub fn validate_rootfs() {
         eprintln!("error due to rootfs want {expected:?}, got {entries:?}");
     }
 }
+
+pub fn validate_process_oom_score_adj(spec: &Spec) {
+    let process = spec.process().as_ref().unwrap();
+    let expected_value = process.oom_score_adj().unwrap();
+
+    let pid = std::process::id();
+    let oom_score_adj_path = format!("/proc/{}/oom_score_adj", pid);
+
+    let actual_value = fs::read_to_string(oom_score_adj_path)
+        .unwrap_or_else(|_| panic!("Failed to read file content"));
+
+    if actual_value.trim() != expected_value.to_string() {
+        eprintln!("Unexpected oom_score_adj, expected: {expected_value} found: {actual_value}");
+    }
+}