verify(raf).writeShort(eq(2));
        verify(raf).write(any(byte[].class), eq(0), eq(2));
    }

    @Test
    @DisplayName("write(byte[],off,0): returns without I/O")
    void write_lenZero_noIO() throws Exception {
        SmbRandomAccessFile raf = spy(newInstance("rw", false, true, false));
        // If ensureOpen is called, fail the test