assertPermutationsCount(6, Collections2.permutations(newArrayList(1, 2, 3)));
    assertPermutationsCount(5040, Collections2.permutations(newArrayList(1, 2, 3, 4, 5, 6, 7)));
    assertPermutationsCount(40320, Collections2.permutations(newArrayList(1, 2, 3, 4, 5, 6, 7, 8)));
  }

  public void testPermutationSetSizeOverflow() {
    // 13 elements overflow an int
    assertEquals(
        Integer.MAX_VALUE,

        // Name bytes at 0x10
        byte[] name = new byte[] { 'T', 'E', 'S', 'T' };
        System.arraycopy(name, 0, ctx, 0x10, name.length);
        // Data bytes at 0x20
        byte[] data = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
        System.arraycopy(data, 0, ctx, 0x20, data.length);

        // Update base to point to the context area
        int offsetFieldPos = base.length - 8; // position of CreateContextsOffset

        // Maximum practical length (avoid OutOfMemoryError)
        StringBuilder maxName = new StringBuilder();
        for (int i = 0; i < 1000; i++) {
            maxName.append("0123456789");
        }
        testTransformer.setName(maxName.toString());
        assertEquals(10000, testTransformer.getName().length());
        assertEquals(maxName.toString(), testTransformer.getName());
    }

    }

    @Test
    @DisplayName("Test desired access setter")
    void testSetDesiredAccess() {
        request = new Smb2CreateRequest(mockConfig, "test.txt");

        int access = 0x12345678;
        request.setDesiredAccess(access);

        byte[] buffer = new byte[1024];
        request.writeBytesWireFormat(buffer, 0);

    void testGetFileIndex() throws SMBProtocolDecodingException {
        // Prepare test data
        byte[] buffer = createValidBuffer("file.txt", "FILE~1.TXT", true);
        int expectedFileIndex = 0x12345678;
        SMBUtil.writeInt4(expectedFileIndex, buffer, 4);

        // Decode
        fileBothDirectoryInfo.decode(buffer, 0, buffer.length);

        // Verify

        when(response.getDigest()).thenReturn(digest);
        response.setDigest(digest);
        assertEquals(digest, response.getDigest());

        // Test mid methods
        long mid = 123456L;
        doNothing().when(response).setMid(mid);
        when(response.getMid()).thenReturn(mid);
        response.setMid(mid);
        assertEquals(mid, response.getMid());

        // Test command methods

        IteratorTester.KnownOrder.KNOWN_ORDER) {
      @Override
      protected Iterator<List<Integer>> newTargetIterator() {
        Iterator<Integer> source = Iterators.forArray(1, 2, 3, 4, 5, 6, 7);
        return Iterators.partition(source, 3);
      }
    }.test();
  }

  public void testPartition_view() {
    List<Integer> list = asList(1, 2);

    for (int i = 5; i < 10; i++) {
      cache.getUnchecked(i);
    }
    ticker.advance(1, MILLISECONDS);

    Set<Integer> keySet = cache.asMap().keySet();
    assertThat(keySet).containsExactly(0, 1, 2, 3, 4, 5, 6, 7, 8, 9);

    // get saves 1, 3; 0, 2, 4 expire
    getAll(cache, asList(1, 3));
    CacheTesting.drainRecencyQueues(cache);
    ticker.advance(1, MILLISECONDS);

    void testReadBytesWireFormatReserved2Field() throws Exception {
        // Given
        byte[] buffer = new byte[256];
        int bodyStart = 0;
        int dataOffsetFromHeader = 80;
        int reserved2Value = 0x12345678;

        // Write structure
        SMBUtil.writeInt2(17, buffer, bodyStart);
        buffer[bodyStart + 2] = (byte) dataOffsetFromHeader;
        SMBUtil.writeInt4(10, buffer, bodyStart + 4);

        }

        @Test
        @DisplayName("toString uses hex authority when high bytes are non-zero")
        void testToStringHexAuthority() {
            byte[] ident = new byte[] { 1, 2, 3, 4, 5, 6 }; // high bytes non-zero -> hex representation
            SID sid = new SID(buildSidT((byte) 1, ident, 7, 8), jcifs.SID.SID_TYPE_USE_NONE, null, null, false);
            String s = sid.toString();