Merge pull request #110931 from claudiubelu/adds-unittests-3

tests: Ports volume unit tests to Windows

pkg/volume/testing/testing.go

@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	goruntime "runtime"
 	"strings"
 	"sync"
 	"testing"
@@ -1269,6 +1270,11 @@ func (fv *FakeVolumePathHandler) GetLoopDevice(path string) (string, error) {
 // FindEmptyDirectoryUsageOnTmpfs finds the expected usage of an empty directory existing on
 // a tmpfs filesystem on this system.
 func FindEmptyDirectoryUsageOnTmpfs() (*resource.Quantity, error) {
+	// The command below does not exist on Windows. Additionally, empty folders have size 0 on Windows.
+	if goruntime.GOOS == "windows" {
+		used, err := resource.ParseQuantity("0")
+		return &used, err
+	}
 	tmpDir, err := utiltesting.MkTmpdir("metrics_du_test")
 	if err != nil {
 		return nil, err