| using NUnit.Framework; |
| using System; |
| using System.Collections.Generic; |
| using Assert = Lucene.Net.TestFramework.Assert; |
| |
| namespace Lucene.Net.Store |
| { |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| using LuceneTestCase = Lucene.Net.Util.LuceneTestCase; |
| |
| /// <summary> |
| /// Test huge RAMFile with more than Integer.MAX_VALUE bytes. </summary> |
| [TestFixture] |
| public class TestHugeRamFile : LuceneTestCase |
| { |
| private static readonly long MAX_VALUE = (long)2 * (long)int.MaxValue; |
| |
| /// <summary> |
| /// Fake a huge ram file by using the same byte buffer for all |
| /// buffers under maxint. |
| /// </summary> |
| private class DenseRAMFile : RAMFile |
| { |
| private long capacity = 0; |
| private readonly Dictionary<int, byte[]> singleBuffers = new Dictionary<int, byte[]>(); |
| |
| protected override byte[] NewBuffer(int size) |
| { |
| capacity += size; |
| if (capacity <= MAX_VALUE) |
| { |
| // below maxint we reuse buffers |
| singleBuffers.TryGetValue(Convert.ToInt32(size), out byte[] buf); |
| if (buf == null) |
| { |
| buf = new byte[size]; |
| //System.out.println("allocate: "+size); |
| singleBuffers[Convert.ToInt32(size)] = buf; |
| } |
| return buf; |
| } |
| //System.out.println("allocate: "+size); System.out.Flush(); |
| return new byte[size]; |
| } |
| } |
| |
| /// <summary> |
| /// Test huge RAMFile with more than Integer.MAX_VALUE bytes. (LUCENE-957) </summary> |
| [Test] |
| [Slow] |
| public virtual void TestHugeFile() |
| { |
| var f = new DenseRAMFile(); |
| // output part |
| var @out = new RAMOutputStream(f); |
| var b1 = new byte[RAMOutputStream.BUFFER_SIZE]; |
| var b2 = new byte[RAMOutputStream.BUFFER_SIZE / 3]; |
| for (int i = 0; i < b1.Length; i++) |
| { |
| b1[i] = (byte)(i & 0x0007F); |
| } |
| for (int i = 0; i < b2.Length; i++) |
| { |
| b2[i] = (byte)(i & 0x0003F); |
| } |
| long n = 0; |
| Assert.AreEqual(n, @out.Length, "output length must match"); |
| while (n <= MAX_VALUE - b1.Length) |
| { |
| @out.WriteBytes(b1, 0, b1.Length); |
| @out.Flush(); |
| n += b1.Length; |
| Assert.AreEqual(n, @out.Length, "output length must match"); |
| } |
| //System.out.println("after writing b1's, length = "+out.Length()+" (MAX_VALUE="+MAX_VALUE+")"); |
| int m = b2.Length; |
| long L = 12; |
| for (int j = 0; j < L; j++) |
| { |
| for (int i = 0; i < b2.Length; i++) |
| { |
| b2[i]++; |
| } |
| @out.WriteBytes(b2, 0, m); |
| @out.Flush(); |
| n += m; |
| Assert.AreEqual(n, @out.Length, "output length must match"); |
| } |
| @out.Dispose(); |
| // input part |
| var @in = new RAMInputStream("testcase", f); |
| Assert.AreEqual(n, @in.Length, "input length must match"); |
| //System.out.println("input length = "+in.Length()+" % 1024 = "+in.Length()%1024); |
| for (int j = 0; j < L; j++) |
| { |
| long loc = n - (L - j) * m; |
| @in.Seek(loc / 3); |
| @in.Seek(loc); |
| for (int i = 0; i < m; i++) |
| { |
| var bt = (sbyte)@in.ReadByte(); |
| var expected = (sbyte)(1 + j + (i & 0x0003F)); |
| Assert.AreEqual(expected, bt, "must read same value that was written! j=" + j + " i=" + i); |
| } |
| } |
| } |
| } |
| } |