From a9aac7e4200ab39885200fcec48b33add425a0b8 Mon Sep 17 00:00:00 2001
From: Kevin Wan <wanjunfeng@gmail.com>
Date: Fri, 19 May 2023 23:29:30 +0800
Subject: [PATCH] chore: add more tests (#3265)

---
 core/stat/internal/cgroup_linux_test.go | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/core/stat/internal/cgroup_linux_test.go b/core/stat/internal/cgroup_linux_test.go
index a2faaf77..06bc5ac9 100644
--- a/core/stat/internal/cgroup_linux_test.go
+++ b/core/stat/internal/cgroup_linux_test.go
@@ -10,3 +10,18 @@ func TestRunningInUserNS(t *testing.T) {
 	// should be false in docker
 	assert.False(t, runningInUserNS())
 }
+
+func TestCgroupV1(t *testing.T) {
+	if isCgroup2UnifiedMode() {
+		cg, err := currentCgroupV1()
+		assert.NoError(t, err)
+		_, err = cg.cpus()
+		assert.Error(t, err)
+		_, err = cg.cpuPeriodUs()
+		assert.Error(t, err)
+		_, err = cg.cpuQuotaUs()
+		assert.Error(t, err)
+		_, err = cg.usageAllCpus()
+		assert.Error(t, err)
+	}
+}