err := oomAdjuster.ApplyOOMScoreAdjContainer("", 100, maxTries)

	// Check error value.
	if expectedError && err == nil {
		t.Errorf("Expected error %+v when running ApplyOOMScoreAdjContainer but got no error", expectedError)
		return
	} else if !expectedError && err != nil {
		t.Errorf("Expected no error but got error %+v when running ApplyOOMScoreAdjContainer", err)
		return
	} else if err != nil {
		return

	"k8s.io/klog/v2"
)

func NewOOMAdjuster() *OOMAdjuster {
	oomAdjuster := &OOMAdjuster{
		pidLister:        getPids,
		ApplyOOMScoreAdj: applyOOMScoreAdj,
	}
	oomAdjuster.ApplyOOMScoreAdjContainer = oomAdjuster.applyOOMScoreAdjContainer
	return oomAdjuster
}

func getPids(cgroupName string) ([]int, error) {
	return cmutil.GetPids(filepath.Join("/", cgroupName))
}

func NewFakeOOMAdjuster() *OOMAdjuster {
	return &OOMAdjuster{
		pidLister:                 func(cgroupName string) ([]int, error) { return make([]int, 0), nil },
		ApplyOOMScoreAdj:          fakeApplyOOMScoreAdj,
		ApplyOOMScoreAdjContainer: fakeApplyOOMScoreAdjContainer,
	}
}

func fakeApplyOOMScoreAdj(pid int, oomScoreAdj int) error {
	return nil
}

func fakeApplyOOMScoreAdjContainer(cgroupName string, oomScoreAdj, maxTries int) error {

)

var unsupportedErr = errors.New("setting OOM scores is unsupported in this build")

func NewOOMAdjuster() *OOMAdjuster {
	return &OOMAdjuster{
		ApplyOOMScoreAdj:          unsupportedApplyOOMScoreAdj,
		ApplyOOMScoreAdjContainer: unsupportedApplyOOMScoreAdjContainer,
	}
}

func unsupportedApplyOOMScoreAdj(pid int, oomScoreAdj int) error {
	return unsupportedErr
}

type OOMAdjuster struct {
	pidLister                 func(cgroupName string) ([]int, error)
	ApplyOOMScoreAdj          func(pid int, oomScoreAdj int) error
	ApplyOOMScoreAdjContainer func(cgroupName string, oomScoreAdj, maxTries int) error