doNothing().when(raf).write(any(byte[].class), anyInt(), anyInt());

        raf.writeShort(1);
        raf.writeChar('A');
        raf.writeInt(1);
        raf.writeLong(1L);
        raf.writeFloat(1.0f);
        raf.writeDouble(1.0);

        // Verify length counts - using times() to check exact counts
        verify(raf, times(2)).write(any(byte[].class), anyInt(), eq(2)); // short and char