public virtual void TestTokenReuse()
{
Analyzer analyzer = new AnalyzerAnonymousInnerClassHelper2(this);
IndexWriter writer = new IndexWriter(Dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer));
Document doc = new Document();
doc.Add(NewTextField("f1", "a 5 a a", Field.Store.YES));
writer.AddDocument(doc);
writer.Commit();
SegmentCommitInfo info = writer.NewestSegment();
writer.Dispose();
SegmentReader reader = new SegmentReader(info, DirectoryReader.DEFAULT_TERMS_INDEX_DIVISOR, NewIOContext(Random()));
DocsAndPositionsEnum termPositions = MultiFields.GetTermPositionsEnum(reader, reader.LiveDocs, "f1", new BytesRef("a"));
Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
int freq = termPositions.Freq;
Assert.AreEqual(3, freq);
Assert.AreEqual(0, termPositions.NextPosition());
Assert.IsNotNull(termPositions.GetPayload());
Assert.AreEqual(6, termPositions.NextPosition());
Assert.IsNull(termPositions.GetPayload());
Assert.AreEqual(7, termPositions.NextPosition());
Assert.IsNull(termPositions.GetPayload());
reader.Dispose();
}
public virtual void TestTerms()
{
Fields fields = MultiFields.GetFields(Reader);
foreach (string field in fields)
{
Terms terms = fields.GetTerms(field);
Assert.IsNotNull(terms);
TermsEnum termsEnum = terms.GetIterator(null);
while (termsEnum.Next() != null)
{
BytesRef term = termsEnum.Term;
Assert.IsTrue(term != null);
string fieldValue = (string)DocHelper.NameValues[field];
Assert.IsTrue(fieldValue.IndexOf(term.Utf8ToString(), StringComparison.Ordinal) != -1);
}
}
DocsEnum termDocs = TestUtil.Docs(Random, Reader, DocHelper.TEXT_FIELD_1_KEY, new BytesRef("field"), MultiFields.GetLiveDocs(Reader), null, 0);
Assert.IsTrue(termDocs.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
termDocs = TestUtil.Docs(Random, Reader, DocHelper.NO_NORMS_KEY, new BytesRef(DocHelper.NO_NORMS_TEXT), MultiFields.GetLiveDocs(Reader), null, 0);
Assert.IsTrue(termDocs.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
DocsAndPositionsEnum positions = MultiFields.GetTermPositionsEnum(Reader, MultiFields.GetLiveDocs(Reader), DocHelper.TEXT_FIELD_1_KEY, new BytesRef("field"));
// NOTE: prior rev of this test was failing to first
// call next here:
Assert.IsTrue(positions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
Assert.IsTrue(positions.DocID == 0);
Assert.IsTrue(positions.NextPosition() >= 0);
}
public virtual void TestPositionIncrementGap()
{
Analyzer analyzer = new AnalyzerAnonymousInnerClassHelper(this);
IndexWriter writer = new IndexWriter(Dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer));
Document doc = new Document();
doc.Add(NewTextField("repeated", "repeated one", Field.Store.YES));
doc.Add(NewTextField("repeated", "repeated two", Field.Store.YES));
writer.AddDocument(doc);
writer.Commit();
SegmentCommitInfo info = writer.NewestSegment();
writer.Dispose();
SegmentReader reader = new SegmentReader(info, DirectoryReader.DEFAULT_TERMS_INDEX_DIVISOR, NewIOContext(Random()));
DocsAndPositionsEnum termPositions = MultiFields.GetTermPositionsEnum(reader, MultiFields.GetLiveDocs(reader), "repeated", new BytesRef("repeated"));
Assert.IsTrue(termPositions.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
int freq = termPositions.Freq;
Assert.AreEqual(2, freq);
Assert.AreEqual(0, termPositions.NextPosition());
Assert.AreEqual(502, termPositions.NextPosition());
reader.Dispose();
}
public virtual void TestSeek()
{
Directory directory = NewDirectory();
IndexWriter writer = new IndexWriter(directory, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())));
for (int i = 0; i < 10; i++)
{
Document doc = new Document();
doc.Add(NewTextField(this.Field, "a b", Documents.Field.Store.YES));
writer.AddDocument(doc);
}
writer.Dispose();
IndexReader reader = DirectoryReader.Open(directory);
DocsAndPositionsEnum tp = MultiFields.GetTermPositionsEnum(reader, MultiFields.GetLiveDocs(reader), this.Field, new BytesRef("b"));
for (int i = 0; i < 10; i++)
{
tp.NextDoc();
Assert.AreEqual(tp.DocID, i);
Assert.AreEqual(tp.NextPosition(), 1);
}
tp = MultiFields.GetTermPositionsEnum(reader, MultiFields.GetLiveDocs(reader), this.Field, new BytesRef("a"));
for (int i = 0; i < 10; i++)
{
tp.NextDoc();
Assert.AreEqual(tp.DocID, i);
Assert.AreEqual(tp.NextPosition(), 0);
}
reader.Dispose();
directory.Dispose();
}
public virtual void TestBasic()
{
Directory dir = NewDirectory();
RandomIndexWriter w = new RandomIndexWriter(Random(), dir, Similarity, TimeZone);
Document doc = new Document();
FieldType ft = new FieldType(TextField.TYPE_NOT_STORED);
ft.IndexOptions = IndexOptions.DOCS_AND_FREQS;
Field f = NewField("foo", "this is a test test", ft);
doc.Add(f);
for (int i = 0; i < 100; i++)
{
w.AddDocument(doc);
}
IndexReader reader = w.Reader;
w.Dispose();
Assert.IsNull(MultiFields.GetTermPositionsEnum(reader, null, "foo", new BytesRef("test")));
DocsEnum de = TestUtil.Docs(Random(), reader, "foo", new BytesRef("test"), null, null, DocsFlags.FREQS);
while (de.NextDoc() != DocIdSetIterator.NO_MORE_DOCS)
{
Assert.AreEqual(2, de.Freq);
}
reader.Dispose();
dir.Dispose();
}
public virtual void TestBasic()
{
Directory dir = NewDirectory();
RandomIndexWriter w = new RandomIndexWriter(Random, dir, iwc);
Document doc = new Document();
FieldType ft = new FieldType(TextField.TYPE_NOT_STORED);
ft.IndexOptions = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
if (Random.NextBoolean())
{
ft.StoreTermVectors = true;
ft.StoreTermVectorPositions = Random.NextBoolean();
ft.StoreTermVectorOffsets = Random.NextBoolean();
}
Token[] tokens = new Token[] { MakeToken("a", 1, 0, 6), MakeToken("b", 1, 8, 9), MakeToken("a", 1, 9, 17), MakeToken("c", 1, 19, 50) };
doc.Add(new Field("content", new CannedTokenStream(tokens), ft));
w.AddDocument(doc);
IndexReader r = w.GetReader();
w.Dispose();
DocsAndPositionsEnum dp = MultiFields.GetTermPositionsEnum(r, null, "content", new BytesRef("a"));
Assert.IsNotNull(dp);
Assert.AreEqual(0, dp.NextDoc());
Assert.AreEqual(2, dp.Freq);
Assert.AreEqual(0, dp.NextPosition());
Assert.AreEqual(0, dp.StartOffset);
Assert.AreEqual(6, dp.EndOffset);
Assert.AreEqual(2, dp.NextPosition());
Assert.AreEqual(9, dp.StartOffset);
Assert.AreEqual(17, dp.EndOffset);
Assert.AreEqual(DocIdSetIterator.NO_MORE_DOCS, dp.NextDoc());
dp = MultiFields.GetTermPositionsEnum(r, null, "content", new BytesRef("b"));
Assert.IsNotNull(dp);
Assert.AreEqual(0, dp.NextDoc());
Assert.AreEqual(1, dp.Freq);
Assert.AreEqual(1, dp.NextPosition());
Assert.AreEqual(8, dp.StartOffset);
Assert.AreEqual(9, dp.EndOffset);
Assert.AreEqual(DocIdSetIterator.NO_MORE_DOCS, dp.NextDoc());
dp = MultiFields.GetTermPositionsEnum(r, null, "content", new BytesRef("c"));
Assert.IsNotNull(dp);
Assert.AreEqual(0, dp.NextDoc());
Assert.AreEqual(1, dp.Freq);
Assert.AreEqual(3, dp.NextPosition());
Assert.AreEqual(19, dp.StartOffset);
Assert.AreEqual(50, dp.EndOffset);
Assert.AreEqual(DocIdSetIterator.NO_MORE_DOCS, dp.NextDoc());
r.Dispose();
dir.Dispose();
}
public virtual void DoTestNumbers(bool withPayloads)
{
Directory dir = NewDirectory();
Analyzer analyzer = withPayloads ? (Analyzer) new MockPayloadAnalyzer() : new MockAnalyzer(Random);
iwc = NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer);
iwc.SetMergePolicy(NewLogMergePolicy()); // will rely on docids a bit for skipping
RandomIndexWriter w = new RandomIndexWriter(Random, dir, iwc);
FieldType ft = new FieldType(TextField.TYPE_STORED);
ft.IndexOptions = IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS;
if (Random.NextBoolean())
{
ft.StoreTermVectors = true;
ft.StoreTermVectorOffsets = Random.NextBoolean();
ft.StoreTermVectorPositions = Random.NextBoolean();
}
int numDocs = AtLeast(500);
for (int i = 0; i < numDocs; i++)
{
Document doc = new Document();
doc.Add(new Field("numbers", English.Int32ToEnglish(i), ft));
doc.Add(new Field("oddeven", (i % 2) == 0 ? "even" : "odd", ft));
doc.Add(new StringField("id", "" + i, Field.Store.NO));
w.AddDocument(doc);
}
IndexReader reader = w.GetReader();
w.Dispose();
string[] terms = new string[] { "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "hundred" };
foreach (string term in terms)
{
DocsAndPositionsEnum dp = MultiFields.GetTermPositionsEnum(reader, null, "numbers", new BytesRef(term));
int doc;
while ((doc = dp.NextDoc()) != DocIdSetIterator.NO_MORE_DOCS)
{
string storedNumbers = reader.Document(doc).Get("numbers");
int freq = dp.Freq;
for (int i = 0; i < freq; i++)
{
dp.NextPosition();
int start = dp.StartOffset;
if (Debugging.AssertsEnabled)
{
Debugging.Assert(start >= 0);
}
int end = dp.EndOffset;
if (Debugging.AssertsEnabled)
{
Debugging.Assert(end >= 0 && end >= start);
}
// check that the offsets correspond to the term in the src text
Assert.IsTrue(storedNumbers.Substring(start, end - start).Equals(term, StringComparison.Ordinal));
if (withPayloads)
{
// check that we have a payload and it starts with "pos"
Assert.IsNotNull(dp.GetPayload());
BytesRef payload = dp.GetPayload();
Assert.IsTrue(payload.Utf8ToString().StartsWith("pos:", StringComparison.Ordinal));
} // note: withPayloads=false doesnt necessarily mean we dont have them from MockAnalyzer!
}
}
}
// check we can skip correctly
int numSkippingTests = AtLeast(50);
for (int j = 0; j < numSkippingTests; j++)
{
int num = TestUtil.NextInt32(Random, 100, Math.Min(numDocs - 1, 999));
DocsAndPositionsEnum dp = MultiFields.GetTermPositionsEnum(reader, null, "numbers", new BytesRef("hundred"));
int doc = dp.Advance(num);
Assert.AreEqual(num, doc);
int freq = dp.Freq;
for (int i = 0; i < freq; i++)
{
string storedNumbers = reader.Document(doc).Get("numbers");
dp.NextPosition();
int start = dp.StartOffset;
if (Debugging.AssertsEnabled)
{
Debugging.Assert(start >= 0);
}
int end = dp.EndOffset;
if (Debugging.AssertsEnabled)
{
Debugging.Assert(end >= 0 && end >= start);
}
// check that the offsets correspond to the term in the src text
Assert.IsTrue(storedNumbers.Substring(start, end - start).Equals("hundred", StringComparison.Ordinal));
if (withPayloads)
{
// check that we have a payload and it starts with "pos"
Assert.IsNotNull(dp.GetPayload());
BytesRef payload = dp.GetPayload();
Assert.IsTrue(payload.Utf8ToString().StartsWith("pos:", StringComparison.Ordinal));
} // note: withPayloads=false doesnt necessarily mean we dont have them from MockAnalyzer!
}
}
// check that other fields (without offsets) work correctly
for (int i = 0; i < numDocs; i++)
{
DocsEnum dp = MultiFields.GetTermDocsEnum(reader, null, "id", new BytesRef("" + i), 0);
Assert.AreEqual(i, dp.NextDoc());
Assert.AreEqual(DocIdSetIterator.NO_MORE_DOCS, dp.NextDoc());
}
reader.Dispose();
dir.Dispose();
}
public virtual void TestLongPostings_Mem()
{
// Don't use TestUtil.getTempDir so that we own the
// randomness (ie same seed will point to same dir):
Directory dir = NewFSDirectory(CreateTempDir("longpostings" + "." + Random.NextInt64()));
int NUM_DOCS = AtLeast(2000);
if (VERBOSE)
{
Console.WriteLine("TEST: NUM_DOCS=" + NUM_DOCS);
}
string s1 = GetRandomTerm(null);
string s2 = GetRandomTerm(s1);
if (VERBOSE)
{
Console.WriteLine("\nTEST: s1=" + s1 + " s2=" + s2);
/*
* for(int idx=0;idx<s1.Length();idx++) {
* System.out.println(" s1 ch=0x" + Integer.toHexString(s1.charAt(idx)));
* }
* for(int idx=0;idx<s2.Length();idx++) {
* System.out.println(" s2 ch=0x" + Integer.toHexString(s2.charAt(idx)));
* }
*/
}
FixedBitSet isS1 = new FixedBitSet(NUM_DOCS);
for (int idx = 0; idx < NUM_DOCS; idx++)
{
if (Random.NextBoolean())
{
isS1.Set(idx);
}
}
IndexReader r;
IndexWriterConfig iwc = NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)).SetOpenMode(OpenMode.CREATE).SetMergePolicy(NewLogMergePolicy());
iwc.SetRAMBufferSizeMB(16.0 + 16.0 * Random.NextDouble());
iwc.SetMaxBufferedDocs(-1);
RandomIndexWriter riw = new RandomIndexWriter(Random, dir, iwc);
for (int idx = 0; idx < NUM_DOCS; idx++)
{
Document doc = new Document();
string s = isS1.Get(idx) ? s1 : s2;
Field f = NewTextField("field", s, Field.Store.NO);
int count = TestUtil.NextInt32(Random, 1, 4);
for (int ct = 0; ct < count; ct++)
{
doc.Add(f);
}
riw.AddDocument(doc);
}
r = riw.GetReader();
riw.Dispose();
/*
* if (VERBOSE) {
* System.out.println("TEST: terms");
* TermEnum termEnum = r.Terms();
* while(termEnum.Next()) {
* System.out.println(" term=" + termEnum.Term() + " len=" + termEnum.Term().Text().Length());
* Assert.IsTrue(termEnum.DocFreq() > 0);
* System.out.println(" s1?=" + (termEnum.Term().Text().equals(s1)) + " s1len=" + s1.Length());
* System.out.println(" s2?=" + (termEnum.Term().Text().equals(s2)) + " s2len=" + s2.Length());
* final String s = termEnum.Term().Text();
* for(int idx=0;idx<s.Length();idx++) {
* System.out.println(" ch=0x" + Integer.toHexString(s.charAt(idx)));
* }
* }
* }
*/
Assert.AreEqual(NUM_DOCS, r.NumDocs);
Assert.IsTrue(r.DocFreq(new Term("field", s1)) > 0);
Assert.IsTrue(r.DocFreq(new Term("field", s2)) > 0);
int num = AtLeast(1000);
for (int iter = 0; iter < num; iter++)
{
string term;
bool doS1;
if (Random.NextBoolean())
{
term = s1;
doS1 = true;
}
else
{
term = s2;
doS1 = false;
}
if (VERBOSE)
{
Console.WriteLine("\nTEST: iter=" + iter + " doS1=" + doS1);
}
DocsAndPositionsEnum postings = MultiFields.GetTermPositionsEnum(r, null, "field", new BytesRef(term));
int docID = -1;
while (docID < DocIdSetIterator.NO_MORE_DOCS)
{
int what = Random.Next(3);
if (what == 0)
{
if (VERBOSE)
{
Console.WriteLine("TEST: docID=" + docID + "; do next()");
}
// nextDoc
int expected = docID + 1;
while (true)
{
if (expected == NUM_DOCS)
{
expected = int.MaxValue;
break;
}
else if (isS1.Get(expected) == doS1)
{
break;
}
else
{
expected++;
}
}
docID = postings.NextDoc();
if (VERBOSE)
{
Console.WriteLine(" got docID=" + docID);
}
Assert.AreEqual(expected, docID);
if (docID == DocIdSetIterator.NO_MORE_DOCS)
{
break;
}
if (Random.Next(6) == 3)
{
int freq = postings.Freq;
Assert.IsTrue(freq >= 1 && freq <= 4);
for (int pos = 0; pos < freq; pos++)
{
Assert.AreEqual(pos, postings.NextPosition());
if (Random.NextBoolean())
{
var dummy = postings.GetPayload();
if (Random.NextBoolean())
{
dummy = postings.GetPayload(); // get it again
}
}
}
}
}
else
{
// advance
int targetDocID;
if (docID == -1)
{
targetDocID = Random.Next(NUM_DOCS + 1);
}
else
{
targetDocID = docID + TestUtil.NextInt32(Random, 1, NUM_DOCS - docID);
}
if (VERBOSE)
{
Console.WriteLine("TEST: docID=" + docID + "; do advance(" + targetDocID + ")");
}
int expected = targetDocID;
while (true)
{
if (expected == NUM_DOCS)
{
expected = int.MaxValue;
break;
}
else if (isS1.Get(expected) == doS1)
{
break;
}
else
{
expected++;
}
}
docID = postings.Advance(targetDocID);
if (VERBOSE)
{
Console.WriteLine(" got docID=" + docID);
}
Assert.AreEqual(expected, docID);
if (docID == DocIdSetIterator.NO_MORE_DOCS)
{
break;
}
if (Random.Next(6) == 3)
{
int freq = postings.Freq;
Assert.IsTrue(freq >= 1 && freq <= 4);
for (int pos = 0; pos < freq; pos++)
{
Assert.AreEqual(pos, postings.NextPosition());
if (Random.NextBoolean())
{
var dummy = postings.GetPayload();
if (Random.NextBoolean())
{
dummy = postings.GetPayload(); // get it again
}
}
}
}
}
}
}
r.Dispose();
dir.Dispose();
}
// builds an index with payloads in the given Directory and performs
// different tests to verify the payload encoding
private void PerformTest(Directory dir)
{
PayloadAnalyzer analyzer = new PayloadAnalyzer();
IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer).SetOpenMode(OpenMode.CREATE).SetMergePolicy(NewLogMergePolicy()));
// should be in sync with value in TermInfosWriter
const int skipInterval = 16;
const int numTerms = 5;
const string fieldName = "f1";
int numDocs = skipInterval + 1;
// create content for the test documents with just a few terms
Term[] terms = GenerateTerms(fieldName, numTerms);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < terms.Length; i++)
{
sb.Append(terms[i].Text());
sb.Append(" ");
}
string content = sb.ToString();
int payloadDataLength = numTerms * numDocs * 2 + numTerms * numDocs * (numDocs - 1) / 2;
var payloadData = GenerateRandomData(payloadDataLength);
Document d = new Document();
d.Add(NewTextField(fieldName, content, Field.Store.NO));
// add the same document multiple times to have the same payload lengths for all
// occurrences within two consecutive skip intervals
int offset = 0;
for (int i = 0; i < 2 * numDocs; i++)
{
analyzer = new PayloadAnalyzer(fieldName, payloadData, offset, 1);
offset += numTerms;
writer.AddDocument(d, analyzer);
}
// make sure we create more than one segment to test merging
writer.Commit();
// now we make sure to have different payload lengths next at the next skip point
for (int i = 0; i < numDocs; i++)
{
analyzer = new PayloadAnalyzer(fieldName, payloadData, offset, i);
offset += i * numTerms;
writer.AddDocument(d, analyzer);
}
writer.ForceMerge(1);
// flush
writer.Dispose();
/*
* Verify the index
* first we test if all payloads are stored correctly
*/
IndexReader reader = DirectoryReader.Open(dir);
var verifyPayloadData = new byte[payloadDataLength];
offset = 0;
var tps = new DocsAndPositionsEnum[numTerms];
for (int i = 0; i < numTerms; i++)
{
tps[i] = MultiFields.GetTermPositionsEnum(reader, MultiFields.GetLiveDocs(reader), terms[i].Field, new BytesRef(terms[i].Text()));
}
while (tps[0].NextDoc() != DocIdSetIterator.NO_MORE_DOCS)
{
for (int i = 1; i < numTerms; i++)
{
tps[i].NextDoc();
}
int freq = tps[0].Freq;
for (int i = 0; i < freq; i++)
{
for (int j = 0; j < numTerms; j++)
{
tps[j].NextPosition();
BytesRef br = tps[j].GetPayload();
if (br != null)
{
Array.Copy(br.Bytes, br.Offset, verifyPayloadData, offset, br.Length);
offset += br.Length;
}
}
}
}
AssertByteArrayEquals(payloadData, verifyPayloadData);
/*
* test lazy skipping
*/
DocsAndPositionsEnum tp = MultiFields.GetTermPositionsEnum(reader, MultiFields.GetLiveDocs(reader), terms[0].Field, new BytesRef(terms[0].Text()));
tp.NextDoc();
tp.NextPosition();
// NOTE: prior rev of this test was failing to first
// call next here:
tp.NextDoc();
// now we don't read this payload
tp.NextPosition();
BytesRef payload = tp.GetPayload();
Assert.AreEqual(1, payload.Length, "Wrong payload length.");
Assert.AreEqual(payload.Bytes[payload.Offset], payloadData[numTerms]);
tp.NextDoc();
tp.NextPosition();
// we don't read this payload and skip to a different document
tp.Advance(5);
tp.NextPosition();
payload = tp.GetPayload();
Assert.AreEqual(1, payload.Length, "Wrong payload length.");
Assert.AreEqual(payload.Bytes[payload.Offset], payloadData[5 * numTerms]);
/*
* Test different lengths at skip points
*/
tp = MultiFields.GetTermPositionsEnum(reader, MultiFields.GetLiveDocs(reader), terms[1].Field, new BytesRef(terms[1].Text()));
tp.NextDoc();
tp.NextPosition();
Assert.AreEqual(1, tp.GetPayload().Length, "Wrong payload length.");
tp.Advance(skipInterval - 1);
tp.NextPosition();
Assert.AreEqual(1, tp.GetPayload().Length, "Wrong payload length.");
tp.Advance(2 * skipInterval - 1);
tp.NextPosition();
Assert.AreEqual(1, tp.GetPayload().Length, "Wrong payload length.");
tp.Advance(3 * skipInterval - 1);
tp.NextPosition();
Assert.AreEqual(3 * skipInterval - 2 * numDocs - 1, tp.GetPayload().Length, "Wrong payload length.");
reader.Dispose();
// test long payload
analyzer = new PayloadAnalyzer();
writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer).SetOpenMode(OpenMode.CREATE));
string singleTerm = "lucene";
d = new Document();
d.Add(NewTextField(fieldName, singleTerm, Field.Store.NO));
// add a payload whose length is greater than the buffer size of BufferedIndexOutput
payloadData = GenerateRandomData(2000);
analyzer.SetPayloadData(fieldName, payloadData, 100, 1500);
writer.AddDocument(d);
writer.ForceMerge(1);
// flush
writer.Dispose();
reader = DirectoryReader.Open(dir);
tp = MultiFields.GetTermPositionsEnum(reader, MultiFields.GetLiveDocs(reader), fieldName, new BytesRef(singleTerm));
tp.NextDoc();
tp.NextPosition();
BytesRef bref = tp.GetPayload();
verifyPayloadData = new byte[bref.Length];
var portion = new byte[1500];
Array.Copy(payloadData, 100, portion, 0, 1500);
AssertByteArrayEquals(portion, bref.Bytes, bref.Offset, bref.Length);
reader.Dispose();
}