}

    // --- WriterThread behavior ---

    @Test
    @DisplayName("WriterThread writes provided buffer and stops on -1")
    void writerThread_writes_and_stops() throws Exception {
        // Arrange
        WriterThread w = new WriterThread();
        SmbFileOutputStream out = mock(SmbFileOutputStream.class);
        byte[] payload = new byte[] { 1, 2, 3, 4 };