filesize := size(path, t)
		if dir.Size() != filesize {
			t.Error("size should be", filesize, "; is", dir.Size())
		}
	}
}

// Read with length 0 should not return EOF.
func TestRead0(t *testing.T) {
	t.Parallel()

	path := sfdir + "/" + sfname
	f, err := Open(path)
	if err != nil {
		t.Fatal("open failed:", err)
	}
	defer f.Close()

	b := make([]byte, 0)