// createPermDeniedFile - creates temporary directory and file with path '/mybucket/myobject'
func createPermDeniedFile(t *testing.T) (permDeniedDir string) {
	var err error
	permDeniedDir = t.TempDir()

	if err = os.Mkdir(slashpath.Join(permDeniedDir, "mybucket"), 0o775); err != nil {
		t.Fatalf(fmt.Sprintf("Unable to create temporary directory %v. %v", slashpath.Join(permDeniedDir, "mybucket"), err))
	}