Add test for cgroups_relative_memory

Signed-off-by: omprakaash <omsuseela@gmail.com>

tests/contest/contest/src/main.rs

@@ -98,6 +98,7 @@ fn main() -> Result<()> {
     let cgroup_v1_memory = cgroups::memory::get_test_group();
     let cgroup_v1_network = cgroups::network::get_test_group();
     let cgroup_v1_blkio = cgroups::blkio::get_test_group();
+    let cgroup_v1_relative_memory = cgroups::relative_memory::get_test_group();
     let seccomp = get_seccomp_test();
     let seccomp_notify = get_seccomp_notify_test();
     let ro_paths = get_ro_paths_test();
@@ -120,6 +121,7 @@ fn main() -> Result<()> {
     tm.add_test_group(Box::new(cgroup_v1_memory));
     tm.add_test_group(Box::new(cgroup_v1_network));
     tm.add_test_group(Box::new(cgroup_v1_blkio));
+    tm.add_test_group(Box::new(cgroup_v1_relative_memory));
     tm.add_test_group(Box::new(seccomp));
     tm.add_test_group(Box::new(seccomp_notify));
     tm.add_test_group(Box::new(ro_paths));

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

@@ -8,6 +8,7 @@ pub mod cpu;
 pub mod memory;
 pub mod network;
 pub mod pids;
+pub mod relative_memory;
 
 pub fn cleanup_v1() -> Result<()> {
     for subsystem in list_subsystem_mount_points()? {

tests/contest/contest/src/tests/cgroups/relative_memory.rs

@@ -0,0 +1,67 @@
+use std::path::Path;
+
+use anyhow::{Context, Result};
+use oci_spec::runtime::{
+    LinuxBuilder, LinuxMemoryBuilder, LinuxResourcesBuilder, Spec, SpecBuilder,
+};
+use test_framework::{test_result, ConditionalTest, TestGroup, TestResult};
+
+use crate::utils::{test_outside_container, test_utils::check_container_created};
+
+const CGROUP_MEMORY_LIMIT: &str = "/sys/fs/cgroup/memory/memory.limit_in_bytes";
+const CGROUP_MEMORY_SWAPPINESS: &str = "/sys/fs/cgroup/memory/memory.swappiness";
+
+fn create_spec(cgroup_name: &str, limit: i64, swappiness: u64) -> Result<Spec> {
+    let spec = SpecBuilder::default()
+        .linux(
+            LinuxBuilder::default()
+                .cgroups_path(Path::new("/testdir/runtime-test/container").join(cgroup_name))
+                .resources(
+                    LinuxResourcesBuilder::default()
+                        .memory(
+                            LinuxMemoryBuilder::default()
+                                .limit(limit)
+                                .swappiness(swappiness)
+                                .build()
+                                .context("failed to build memory spec")?,
+                        )
+                        .build()
+                        .context("failed to build resource spec")?,
+                )
+                .build()
+                .context("failed to build linux spec")?,
+        )
+        .build()
+        .context("failed to build spec")?;
+
+    Ok(spec)
+}
+
+fn test_relative_memory_cgroups() -> TestResult {
+    let cgroup_name = "test_relative_memory_cgroups";
+
+    let spec = test_result!(create_spec(cgroup_name, 50593792, 10));
+
+    test_outside_container(spec, &|data| {
+        test_result!(check_container_created(&data));
+
+        TestResult::Passed
+    })
+}
+
+fn can_run() -> bool {
+    Path::new(CGROUP_MEMORY_LIMIT).exists() && Path::new(CGROUP_MEMORY_SWAPPINESS).exists()
+}
+
+pub fn get_test_group() -> TestGroup {
+    let mut test_group = TestGroup::new("cgroup_v1_relative_memory");
+    let linux_cgroups_memory = ConditionalTest::new(
+        "test_linux_cgroups_relative_memory",
+        Box::new(can_run),
+        Box::new(test_relative_memory_cgroups),
+    );
+
+    test_group.add(vec![Box::new(linux_cgroups_memory)]);
+
+    test_group
+}