示例#1
0
        // Was testTrieRanges in ICU4C.  Renamed to not conflict with ICU4J test framework.
        private void checkTrieRanges(String testName, String serializedName, bool withClone,
                                     int[][] setRanges, int[][] checkRanges)
        {
            string ns =
#if FEATURE_TYPEEXTENSIONS_GETTYPEINFO
                typeof(Trie2Test).GetTypeInfo().Namespace;
#else
                typeof(Trie2Test).Namespace;
#endif

            // Run tests against Tries that were built by ICU4C and serialized.
            String fileName16 = ns + ".Trie2Test." + serializedName + ".16.tri2";
            String fileName32 = ns + ".Trie2Test." + serializedName + ".32.tri2";

#if FEATURE_TYPEEXTENSIONS_GETTYPEINFO
            Assembly assembly = typeof(Trie2Test).GetTypeInfo().Assembly;
#else
            Assembly assembly = typeof(Trie2Test).Assembly;
#endif

            Stream @is = assembly.GetManifestResourceStream(fileName16);
            Trie2  trie16;
            try
            {
                trie16 = Trie2.CreateFromSerialized(ICUBinary.GetByteBufferFromStreamAndDisposeStream(@is));
            }
            finally
            {
                @is.Dispose();
            }
            trieGettersTest(testName, trie16, checkRanges);

            @is = assembly.GetManifestResourceStream(fileName32);
            Trie2 trie32;
            try
            {
                trie32 = Trie2.CreateFromSerialized(ICUBinary.GetByteBufferFromStreamAndDisposeStream(@is));
            }
            finally
            {
                @is.Dispose();
            }
            trieGettersTest(testName, trie32, checkRanges);

            // Run the same tests against locally contructed Tries.
            Trie2Writable trieW = genTrieFromSetRanges(setRanges);
            trieGettersTest(testName, trieW, checkRanges);
            assertEquals("", trieW, trie16);   // Locally built tries must be
            assertEquals("", trieW, trie32);   //   the same as those imported from ICU4C


            Trie2_32 trie32a = trieW.ToTrie2_32();
            trieGettersTest(testName, trie32a, checkRanges);

            Trie2_16 trie16a = trieW.ToTrie2_16();
            trieGettersTest(testName, trie16a, checkRanges);
        }
示例#2
0
        /// <summary>
        /// Get an <see cref="RBBIDataWrapper"/> from an InputStream onto a pre-compiled set
        /// of RBBI rules.
        /// </summary>
        /// <param name="bytes"></param>
        /// <returns></returns>
        internal static RBBIDataWrapper Get(ByteBuffer bytes)
        {
            RBBIDataWrapper This = new RBBIDataWrapper();

            ICUBinary.ReadHeader(bytes, DATA_FORMAT, IS_ACCEPTABLE);
            This.isBigEndian = bytes.Order == ByteOrder.BigEndian;

            // Read in the RBBI data header...
            This.fHeader                   = new RBBIDataHeader();
            This.fHeader.fMagic            = bytes.GetInt32();
            This.fHeader.fFormatVersion[0] = bytes.Get();
            This.fHeader.fFormatVersion[1] = bytes.Get();
            This.fHeader.fFormatVersion[2] = bytes.Get();
            This.fHeader.fFormatVersion[3] = bytes.Get();
            This.fHeader.fLength           = bytes.GetInt32();
            This.fHeader.fCatCount         = bytes.GetInt32();
            This.fHeader.fFTable           = bytes.GetInt32();
            This.fHeader.fFTableLen        = bytes.GetInt32();
            This.fHeader.fRTable           = bytes.GetInt32();
            This.fHeader.fRTableLen        = bytes.GetInt32();
            This.fHeader.fSFTable          = bytes.GetInt32();
            This.fHeader.fSFTableLen       = bytes.GetInt32();
            This.fHeader.fSRTable          = bytes.GetInt32();
            This.fHeader.fSRTableLen       = bytes.GetInt32();
            This.fHeader.fTrie             = bytes.GetInt32();
            This.fHeader.fTrieLen          = bytes.GetInt32();
            This.fHeader.fRuleSource       = bytes.GetInt32();
            This.fHeader.fRuleSourceLen    = bytes.GetInt32();
            This.fHeader.fStatusTable      = bytes.GetInt32();
            This.fHeader.fStatusTableLen   = bytes.GetInt32();
            ICUBinary.SkipBytes(bytes, 6 * 4);    // uint32_t  fReserved[6];


            if (This.fHeader.fMagic != 0xb1a0 || !IS_ACCEPTABLE.IsDataVersionAcceptable(This.fHeader.fFormatVersion))
            {
                throw new IOException("Break Iterator Rule Data Magic Number Incorrect, or unsupported data version.");
            }

            // Current position in the buffer.
            int pos = 24 * 4;     // offset of end of header, which has 24 fields, all int32_t (4 bytes)

            //
            // Read in the Forward state transition table as an array of shorts.
            //

            //   Quick Sanity Check
            if (This.fHeader.fFTable < pos || This.fHeader.fFTable > This.fHeader.fLength)
            {
                throw new IOException("Break iterator Rule data corrupt");
            }

            //    Skip over any padding preceding this table
            ICUBinary.SkipBytes(bytes, This.fHeader.fFTable - pos);
            pos = This.fHeader.fFTable;

            This.fFTable = ICUBinary.GetInt16s(
                bytes, This.fHeader.fFTableLen / 2, This.fHeader.fFTableLen & 1);
            pos += This.fHeader.fFTableLen;

            //
            // Read in the Reverse state table
            //

            // Skip over any padding in the file
            ICUBinary.SkipBytes(bytes, This.fHeader.fRTable - pos);
            pos = This.fHeader.fRTable;

            // Create & fill the table itself.
            This.fRTable = ICUBinary.GetInt16s(
                bytes, This.fHeader.fRTableLen / 2, This.fHeader.fRTableLen & 1);
            pos += This.fHeader.fRTableLen;

            //
            // Read in the Safe Forward state table
            //
            if (This.fHeader.fSFTableLen > 0)
            {
                // Skip over any padding in the file
                ICUBinary.SkipBytes(bytes, This.fHeader.fSFTable - pos);
                pos = This.fHeader.fSFTable;

                // Create & fill the table itself.
                This.fSFTable = ICUBinary.GetInt16s(
                    bytes, This.fHeader.fSFTableLen / 2, This.fHeader.fSFTableLen & 1);
                pos += This.fHeader.fSFTableLen;
            }

            //
            // Read in the Safe Reverse state table
            //
            if (This.fHeader.fSRTableLen > 0)
            {
                // Skip over any padding in the file
                ICUBinary.SkipBytes(bytes, This.fHeader.fSRTable - pos);
                pos = This.fHeader.fSRTable;

                // Create & fill the table itself.
                This.fSRTable = ICUBinary.GetInt16s(
                    bytes, This.fHeader.fSRTableLen / 2, This.fHeader.fSRTableLen & 1);
                pos += This.fHeader.fSRTableLen;
            }

            // Rule Compatibility Hacks
            //    If a rule set includes reverse rules but does not explicitly include safe reverse rules,
            //    the reverse rules are to be treated as safe reverse rules.

            if (This.fSRTable == null && This.fRTable != null)
            {
                This.fSRTable = This.fRTable;
                This.fRTable  = null;
            }

            //
            // Unserialize the Character categories TRIE
            //     Because we can't be absolutely certain where the Trie deserialize will
            //     leave the buffer, leave position unchanged.
            //     The seek to the start of the next item following the TRIE will get us
            //     back in sync.
            //
            ICUBinary.SkipBytes(bytes, This.fHeader.fTrie - pos); // seek buffer from end of
            pos = This.fHeader.fTrie;                             // previous section to the start of the trie

            bytes.Mark();                                         // Mark position of start of TRIE in the input
                                                                  //  and tell Java to keep the mark valid so long
                                                                  //  as we don't go more than 100 bytes past the
                                                                  //  past the end of the TRIE.

            This.fTrie = Trie2.CreateFromSerialized(bytes);       // Deserialize the TRIE, leaving buffer
                                                                  //  at an unknown position, preceding the
                                                                  //  padding between TRIE and following section.

            bytes.Reset();                                        // Move buffer back to marked position at
                                                                  //   the start of the serialized TRIE.  Now our
                                                                  //   "pos" variable and the buffer are in
                                                                  //   agreement.

            //
            // Read the Rule Status Table
            //
            if (pos > This.fHeader.fStatusTable)
            {
                throw new IOException("Break iterator Rule data corrupt");
            }
            ICUBinary.SkipBytes(bytes, This.fHeader.fStatusTable - pos);
            pos = This.fHeader.fStatusTable;
            This.fStatusTable = ICUBinary.GetInt32s(
                bytes, This.fHeader.fStatusTableLen / 4, This.fHeader.fStatusTableLen & 3);
            pos += This.fHeader.fStatusTableLen;

            //
            // Put the break rule source into a String
            //
            if (pos > This.fHeader.fRuleSource)
            {
                throw new IOException("Break iterator Rule data corrupt");
            }
            ICUBinary.SkipBytes(bytes, This.fHeader.fRuleSource - pos);
            pos = This.fHeader.fRuleSource;
            This.fRuleSource = ICUBinary.GetString(
                bytes, This.fHeader.fRuleSourceLen / 2, This.fHeader.fRuleSourceLen & 1);

            if (RuleBasedBreakIterator.fDebugEnv != null && RuleBasedBreakIterator.fDebugEnv.IndexOf("data", StringComparison.Ordinal) >= 0)
            {
                This.Dump(Console.Out);
            }
            return(This);
        }
示例#3
0
        public void TestTrie2API()
        {
            // Trie2.createFromSerialized()
            //   This function is well exercised by TestRanges().

            // Trie2.getVersion(InputStream is, boolean anyEndianOk)
            //

            try
            {
                Trie2Writable trie = new Trie2Writable(0, 0);
                MemoryStream  os   = new MemoryStream();
                trie.ToTrie2_16().Serialize(os);
                MemoryStream @is = new MemoryStream(os.ToArray());
                assertEquals(null, 2, Trie2.GetVersion(@is, true));
            }
            catch (IOException e)
            {
                Errln(where () + e.ToString());
            }

            // Equals & hashCode
            //
            {
                Trie2Writable trieWA = new Trie2Writable(0, 0);
                Trie2Writable trieWB = new Trie2Writable(0, 0);
                Trie2         trieA  = trieWA;
                Trie2         trieB  = trieWB;
                assertTrue("", trieA.Equals(trieB));
                assertEquals("", trieA, trieB);
                assertEquals("", trieA.GetHashCode(), trieB.GetHashCode());
                trieWA.Set(500, 2);
                assertNotEquals("", trieA, trieB);
                // Note that the hash codes do not strictly need to be different,
                //   but it's highly likely that something is wrong if they are the same.
                assertNotEquals("", trieA.GetHashCode(), trieB.GetHashCode());
                trieWB.Set(500, 2);
                trieA = trieWA.ToTrie2_16();
                assertEquals("", trieA, trieB);
                assertEquals("", trieA.GetHashCode(), trieB.GetHashCode());
            }

            //
            // Iterator creation
            //
            {
                Trie2Writable            trie = new Trie2Writable(17, 0);
                IEnumerator <Trie2Range> it;
                using (it = trie.GetEnumerator())
                {
                    it.MoveNext();
                    Trie2Range r = it.Current;
                    assertEquals("", 0, r.StartCodePoint);
                    assertEquals("", 0x10ffff, r.EndCodePoint);
                    assertEquals("", 17, r.Value);
                    assertEquals("", false, r.IsLeadSurrogate);

                    it.MoveNext();
                    r = it.Current;
                    assertEquals("", 0xd800, r.StartCodePoint);
                    assertEquals("", 0xdbff, r.EndCodePoint);
                    assertEquals("", 17, r.Value);
                    assertEquals("", true, r.IsLeadSurrogate);


                    int i = 0;
                    foreach (Trie2Range rr in trie)
                    {
                        switch (i)
                        {
                        case 0:
                            assertEquals("", 0, rr.StartCodePoint);
                            assertEquals("", 0x10ffff, rr.EndCodePoint);
                            assertEquals("", 17, rr.Value);
                            assertEquals("", false, rr.IsLeadSurrogate);
                            break;

                        case 1:
                            assertEquals("", 0xd800, rr.StartCodePoint);
                            assertEquals("", 0xdbff, rr.EndCodePoint);
                            assertEquals("", 17, rr.Value);
                            assertEquals("", true, rr.IsLeadSurrogate);
                            break;

                        default:
                            Errln(where () + " Unexpected iteration result");
                            break;
                        }
                        i++;
                    }
                }
            }

            // Iteration with a value mapping function
            //
            {
                Trie2Writable trie = new Trie2Writable(0xbadfeed, 0);
                trie.Set(0x10123, 42);

                IValueMapper vm = new Trie2ValueMapper(map: (v) =>
                {
                    if (v == 0xbadfeed)
                    {
                        v = 42;
                    }
                    return(v);
                });

                using (IEnumerator <Trie2Range> it2 = trie.GetEnumerator(vm))
                {
                    it2.MoveNext();
                    Trie2Range r = it2.Current;
                    assertEquals("", 0, r.StartCodePoint);
                    assertEquals("", 0x10ffff, r.EndCodePoint);
                    assertEquals("", 42, r.Value);
                    assertEquals("", false, r.IsLeadSurrogate);
                }
            }



            // Iteration over a leading surrogate range.
            //
            {
                Trie2Writable trie = new Trie2Writable(0xdefa17, 0);
                trie.Set(0x2f810, 10);
                using (IEnumerator <Trie2Range> it = trie.GetEnumeratorForLeadSurrogate((char)0xd87e))
                {
                    it.MoveNext();
                    Trie2Range r = it.Current;
                    assertEquals("", 0x2f800, r.StartCodePoint);
                    assertEquals("", 0x2f80f, r.EndCodePoint);
                    assertEquals("", 0xdefa17, r.Value);
                    assertEquals("", false, r.IsLeadSurrogate);

                    it.MoveNext();
                    r = it.Current;
                    assertEquals("", 0x2f810, r.StartCodePoint);
                    assertEquals("", 0x2f810, r.EndCodePoint);
                    assertEquals("", 10, r.Value);
                    assertEquals("", false, r.IsLeadSurrogate);

                    it.MoveNext();
                    r = it.Current;
                    assertEquals("", 0x2f811, r.StartCodePoint);
                    assertEquals("", 0x2fbff, r.EndCodePoint);
                    assertEquals("", 0xdefa17, r.Value);
                    assertEquals("", false, r.IsLeadSurrogate);

                    assertFalse("", it.MoveNext());
                }
            }

            // Iteration over a leading surrogate range with a ValueMapper.
            //
            {
                Trie2Writable trie = new Trie2Writable(0xdefa17, 0);

                trie.Set(0x2f810, 10);

                IValueMapper m = new Trie2ValueMapper(map: (@in) =>
                {
                    if (@in == 10)
                    {
                        @in = 0xdefa17;
                    }
                    return(@in);
                });


                using (IEnumerator <Trie2Range> it = trie.GetEnumeratorForLeadSurrogate((char)0xd87e, m))
                {
                    it.MoveNext();
                    Trie2Range r = it.Current;
                    assertEquals("", 0x2f800, r.StartCodePoint);
                    assertEquals("", 0x2fbff, r.EndCodePoint);
                    assertEquals("", 0xdefa17, r.Value);
                    assertEquals("", false, r.IsLeadSurrogate);

                    assertFalse("", it.MoveNext());
                }
            }

            // Trie2.serialize()
            //     Test the implementation in Trie2, which is used with Read Only Tries.
            //
            {
                Trie2Writable trie = new Trie2Writable(101, 0);
                trie.SetRange(0xf000, 0x3c000, 200, true);
                trie.Set(0xffee, 300);
                Trie2_16 frozen16 = trie.ToTrie2_16();
                Trie2_32 frozen32 = trie.ToTrie2_32();
                assertEquals("", trie, frozen16);
                assertEquals("", trie, frozen32);
                assertEquals("", frozen16, frozen32);
                MemoryStream os = new MemoryStream();
                try
                {
                    frozen16.Serialize(os);
                    Trie2 unserialized16 = Trie2.CreateFromSerialized(ByteBuffer.Wrap(os.ToArray()));
                    assertEquals("", trie, unserialized16);
                    assertEquals("", typeof(Trie2_16), unserialized16.GetType());

                    os.Seek(0, SeekOrigin.Begin);
                    frozen32.Serialize(os);
                    Trie2 unserialized32 = Trie2.CreateFromSerialized(ByteBuffer.Wrap(os.ToArray()));
                    assertEquals("", trie, unserialized32);
                    assertEquals("", typeof(Trie2_32), unserialized32.GetType());
                }
                catch (IOException e)
                {
                    Errln(where () + " Unexpected exception:  " + e);
                }
            }
        }
示例#4
0
        //
        //  Check the expected values from a single Trie2.
        //
        private void trieGettersTest(String testName,
                                     Trie2 trie,          // The Trie2 to test.
                                     int[][] checkRanges) // Expected data.
                                                          //   Tuples of (value, high limit code point)
                                                          //   High limit is first code point following the range
                                                          //   with the indicated value.
                                                          //      (Structures copied from ICU4C tests.)
        {
            int countCheckRanges = checkRanges.Length;

            int initialValue, errorValue;
            int value, value2;
            int start, limit;
            int i, countSpecials;

            countSpecials = 0;  /*getSpecialValues(checkRanges, countCheckRanges, &initialValue, &errorValue);*/
            errorValue    = 0x0bad;
            initialValue  = 0;
            if (checkRanges[countSpecials][0] == 0)
            {
                initialValue = checkRanges[countSpecials][1];
                countSpecials++;
            }

            start = 0;
            for (i = countSpecials; i < countCheckRanges; ++i)
            {
                limit = checkRanges[i][0];
                value = checkRanges[i][1];

                while (start < limit)
                {
                    value2 = trie.Get(start);
                    if (value != value2)
                    {
                        // The redundant if, outside of the assert, is for speed.
                        // It makes a significant difference for this test.
                        assertEquals("wrong value for " + testName + " of " + (start).ToHexString(), value, value2);
                    }
                    ++start;
                }
            }


            if (!testName.StartsWith("dummy", StringComparison.Ordinal) && !testName.StartsWith("trie1", StringComparison.Ordinal))
            {
                /* Test values for lead surrogate code units.
                 * For non-lead-surrogate code units,  getFromU16SingleLead() and get()
                 *   should be the same.
                 */
                for (start = 0xd7ff; start < 0xdc01; ++start)
                {
                    switch (start)
                    {
                    case 0xd7ff:
                    case 0xdc00:
                        value = trie.Get(start);
                        break;

                    case 0xd800:
                        value = 90;
                        break;

                    case 0xd999:
                        value = 94;
                        break;

                    case 0xdbff:
                        value = 99;
                        break;

                    default:
                        value = initialValue;
                        break;
                    }
                    value2 = trie.GetFromU16SingleLead((char)start);
                    if (value2 != value)
                    {
                        Errln(where () + " testName: " + testName + " getFromU16SingleLead() failed." +
                              "char, exected, actual = " + (start).ToHexString() + ", " +
                              (value).ToHexString() + ", " + (value2).ToHexString());
                    }
                }
            }

            /* test errorValue */
            value  = trie.Get(-1);
            value2 = trie.Get(0x110000);
            if (value != errorValue || value2 != errorValue)
            {
                Errln("trie2.Get() error value test.  Expected, actual1, actual2 = " +
                      errorValue + ", " + value + ", " + value2);
            }

            // Check that Trie enumeration produces the same contents as simple get()
            foreach (Trie2Range range in trie)
            {
                for (int cp = range.StartCodePoint; cp <= range.EndCodePoint; cp++)
                {
                    if (range.IsLeadSurrogate)
                    {
                        assertTrue(testName, cp >= (char)0xd800 && cp < (char)0xdc00);
                        assertEquals(testName, range.Value, trie.GetFromU16SingleLead((char)cp));
                    }
                    else
                    {
                        assertEquals(testName, range.Value, trie.Get(cp));
                    }
                }
            }
        }
示例#5
0
        public void TestTrie2WritableAPI()
        {
            //
            //   Trie2Writable methods.  Check that all functions are present and
            //      nominally working.  Not an in-depth test.
            //

            // Trie2Writable constructor
            Trie2 t1 = new Trie2Writable(6, 666);

            // Constructor from another Trie2
            Trie2 t2 = new Trie2Writable(t1);

            assertTrue("", t1.Equals(t2));

            // Set / Get
            Trie2Writable t1w = new Trie2Writable(10, 666);

            t1w.Set(0x4567, 99);
            assertEquals("", 10, t1w.Get(0x4566));
            assertEquals("", 99, t1w.Get(0x4567));
            assertEquals("", 666, t1w.Get(-1));
            assertEquals("", 666, t1w.Get(0x110000));


            // SetRange
            t1w = new Trie2Writable(10, 666);
            t1w.SetRange(13 /*start*/, 6666 /*end*/, 7788 /*value*/, false /*overwrite */);
            t1w.SetRange(6000, 7000, 9900, true);
            assertEquals("", 10, t1w.Get(12));
            assertEquals("", 7788, t1w.Get(13));
            assertEquals("", 7788, t1w.Get(5999));
            assertEquals("", 9900, t1w.Get(6000));
            assertEquals("", 9900, t1w.Get(7000));
            assertEquals("", 10, t1w.Get(7001));
            assertEquals("", 666, t1w.Get(0x110000));

            // setRange from a Trie2.Range
            //    (Ranges are more commonly created by iterating over a Trie2,
            //     but create one by hand here)
            Trie2Range r = new Trie2Range();

            r.StartCodePoint  = 50;
            r.EndCodePoint    = 52;
            r.Value           = 0x12345678;
            r.IsLeadSurrogate = false;
            t1w = new Trie2Writable(0, 0xbad);
            t1w.SetRange(r, true);
            assertEquals(null, 0, t1w.Get(49));
            assertEquals("", 0x12345678, t1w.Get(50));
            assertEquals("", 0x12345678, t1w.Get(52));
            assertEquals("", 0, t1w.Get(53));


            // setForLeadSurrogateCodeUnit / getFromU16SingleLead
            t1w = new Trie2Writable(10, 0xbad);
            assertEquals("", 10, t1w.GetFromU16SingleLead((char)0x0d801));
            t1w.SetForLeadSurrogateCodeUnit((char)0xd801, 5000);
            t1w.Set(0xd801, 6000);
            assertEquals("", 5000, t1w.GetFromU16SingleLead((char)0x0d801));
            assertEquals("", 6000, t1w.Get(0x0d801));

            // get().  Is covered by nearly every other test.


            // Trie2_16 getAsFrozen_16()
            t1w = new Trie2Writable(10, 666);
            t1w.Set(42, 5555);
            t1w.Set(0x1ff00, 224);
            Trie2_16 t1_16 = t1w.ToTrie2_16();

            assertTrue("", t1w.Equals(t1_16));
            // alter the writable Trie2 and then re-freeze.
            t1w.Set(152, 129);
            t1_16 = t1w.ToTrie2_16();
            assertTrue("", t1w.Equals(t1_16));
            assertEquals("", 129, t1w.Get(152));

            // Trie2_32 getAsFrozen_32()
            //
            t1w = new Trie2Writable(10, 666);
            t1w.Set(42, 5555);
            t1w.Set(0x1ff00, 224);
            Trie2_32 t1_32 = t1w.ToTrie2_32();

            assertTrue("", t1w.Equals(t1_32));
            // alter the writable Trie2 and then re-freeze.
            t1w.Set(152, 129);
            assertNotEquals("", t1_32, t1w);
            t1_32 = t1w.ToTrie2_32();
            assertTrue("", t1w.Equals(t1_32));
            assertEquals("", 129, t1w.Get(152));


            // serialize(OutputStream os, ValueWidth width)
            //
            MemoryStream os = new MemoryStream();

            t1w = new Trie2Writable(0, 0xbad);
            t1w.Set(0x41, 0x100);
            t1w.Set(0xc2, 0x200);
            t1w.Set(0x404, 0x300);
            t1w.Set(0xd903, 0x500);
            t1w.Set(0xdd29, 0x600);
            t1w.Set(0x1055d3, 0x700);
            t1w.SetForLeadSurrogateCodeUnit((char)0xda1a, 0x800);
            try
            {
                // Serialize to 16 bits.
                int serializedLen = t1w.ToTrie2_16().Serialize(os);
                // Fragile test.  Serialized length could change with changes to compaction.
                //                But it should not change unexpectedly.
                assertEquals("", 3508, serializedLen);
                Trie2 t1ws16 = Trie2.CreateFromSerialized(ByteBuffer.Wrap(os.ToArray()));
                assertEquals("", t1ws16.GetType(), typeof(Trie2_16));
                assertEquals("", t1w, t1ws16);

                // Serialize to 32 bits
                os.Seek(0, SeekOrigin.Begin);
                serializedLen = t1w.ToTrie2_32().Serialize(os);
                // Fragile test.  Serialized length could change with changes to compaction.
                //                But it should not change unexpectedly.
                assertEquals("", 4332, serializedLen);
                Trie2 t1ws32 = Trie2.CreateFromSerialized(ByteBuffer.Wrap(os.ToArray()));
                assertEquals("", t1ws32.GetType(), typeof(Trie2_32));
                assertEquals("", t1w, t1ws32);
            }
            catch (IOException e)
            {
                Errln(where () + e.ToString());
            }
        }