libdb/test/csharp/LogCursorTest.cs
2011-09-13 13:44:24 -04:00

315 lines
6.9 KiB
C#

/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2009, 2011 Oracle and/or its affiliates. All rights reserved.
*
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Xml;
using NUnit.Framework;
using BerkeleyDB;
namespace CsharpAPITest
{
[TestFixture]
public class LogCursorTest
{
DatabaseEnvironment env;
[TestFixtureSetUp]
public void SetUpTestFixture()
{
testFixtureName = "LogCursorTest";
base.SetUpTestfixture();
/*
* Delete existing test ouput directory and files specified
* for the current test fixture and then create a new one.
*/
}
[Test]
public void TestClose()
{
testName = "TestClose";
SetUpTest(true);
DatabaseEnvironment env;
LogCursor logCursor;
RecnoDatabase db;
Logging(testHome, testName, out env, out db);
// Get log cursor to read/write log.
logCursor = env.GetLogCursor();
// Close the log cursor and env.
logCursor.Close();
db.Close();
env.Close();
}
[Test]
public void TesCurrentLSN()
{
testName = "TesCurrentLSN";
SetUpTest(true);
RecnoDatabase db;
Logging(testHome, testName, out env, out db);
// Get log cursor to read/write log.
LogCursor logCursor = env.GetLogCursor();
/*
* Move the cursor to the beginning of the #1 log file.
* Get the current LSN and confirm that is the position
* the cursor is moved to.
*/
LSN lsn = new LSN(1, 0);
logCursor.Move(lsn);
Assert.AreEqual(lsn.LogFileNumber,
logCursor.CurrentLSN.LogFileNumber);
Assert.AreEqual(lsn.Offset, logCursor.CurrentLSN.Offset);
// Close all.
logCursor.Close();
db.Close();
env.Close();
}
[Test]
public void TestCurrentRecord()
{
testName = "TestCurrentRecord";
SetUpTest(true);
DatabaseEnvironment env;
RecnoDatabase db;
Logging(testHome, testName, out env, out db);
// Get log cursor to read/write log.
LogCursor logCursor = env.GetLogCursor();
/*
* Move the cursor to the beginning of the #1 log file.
* Get the current LSN and confirm that is the position
* the cursor is moved to.
*/
LSN lsn = new LSN(1, 0);
logCursor.Move(lsn);
Assert.IsNotNull(logCursor.CurrentRecord.Data);
// Close all.
logCursor.Close();
db.Close();
env.Close();
}
[Test]
public void TestMove()
{
testName = "TestMove";
SetUpTest(true);
DatabaseEnvironment env;
RecnoDatabase db;
Logging(testHome, testName, out env, out db);
// Get log cursor to read/write log.
LogCursor logCursor = env.GetLogCursor();
// Move the cursor to specified location in log files.
LSN lsn = new LSN(1, 0);
Assert.IsTrue(logCursor.Move(lsn));
// Close all.
logCursor.Close();
db.Close();
env.Close();
}
/*
[Test]
public void TestMoveFirst()
{
testName = "TestMoveFirst";
SetUpTest(true);
DatabaseEnvironment env;
RecnoDatabase db;
Logging(testHome, testName, out env, out db);
// Get log cursor to read/write log.
LogCursor logCursor = env.GetLogCursor();
// Move to the first LSN in log file.
Assert.IsTrue(logCursor.MoveFirst());
// Confirm offset of the fist LSN should be 0.
Assert.AreEqual(0, logCursor.CurrentLSN.Offset);
// Close all.
logCursor.Close();
db.Close();
env.Close();
}
*/
[Test]
public void TestMoveLast()
{
testName = "TestMoveLast";
SetUpTest(true);
DatabaseEnvironment env;
RecnoDatabase db;
Logging(testHome, testName, out env, out db);
// Get log cursor to read/write log.
LogCursor logCursor = env.GetLogCursor();
// Move to the last LSN in log file.
Assert.IsTrue(logCursor.MoveLast());
// The offset of last LSN shouldn't be 0.
Assert.AreNotEqual(0, logCursor.CurrentLSN.Offset);
// Close all.
logCursor.Close();
db.Close();
env.Close();
}
[Test]
public void TestMoveNext()
{
testName = "TestMoveNext";
SetUpTest(true);
DatabaseEnvironment env;
RecnoDatabase db;
Logging(testHome, testName, out env, out db);
// Get log cursor to read/write log.
LogCursor logCursor = env.GetLogCursor();
logCursor.MoveLast();
DatabaseEntry curRec = logCursor.CurrentRecord;
for (int i = 0; i < 1000; i++)
db.Append(new DatabaseEntry(
ASCIIEncoding.ASCII.GetBytes("new data")));
Assert.IsTrue(logCursor.MoveNext());
logCursor.MoveNext();
// Close the log cursor.
logCursor.Close();
db.Close();
env.Close();
}
[Test]
public void TestMovePrev()
{
testName = "TestMovePrev";
SetUpTest(true);
DatabaseEnvironment env;
LSN lsn;
RecnoDatabase db;
Logging(testHome, testName, out env, out db);
// Get log cursor to read/write log.
LogCursor logCursor = env.GetLogCursor();
// Get the last two LSN in log file.
logCursor.MoveLast();
Assert.IsTrue(logCursor.MovePrev());
// Close all.
logCursor.Close();
db.Close();
env.Close();
}
[Test]
public void TestRefresh()
{
testName = "TestRefresh";
SetUpTest(true);
DatabaseEnvironment env;
LSN lsn;
RecnoDatabase db;
Logging(testHome, testName, out env, out db);
// Get log cursor to read/write log.
LogCursor logCursor = env.GetLogCursor();
// Move the cursor to the last record.
logCursor.MoveLast();
DatabaseEntry curRec = logCursor.CurrentRecord;
// Put some new records into database.
for (int i = 0; i < 10; i++)
db.Append(new DatabaseEntry(
ASCIIEncoding.ASCII.GetBytes("new data")));
// Get the current record that cursor points to.
logCursor.Refresh();
// It shouldn't be changed.
Assert.AreEqual(curRec.Data,
logCursor.CurrentRecord.Data);
// Close all.
logCursor.Close();
db.Close();
env.Close();
}
/*
* Open environment, database and write data into database.
* Generated log files are put under testHome.
*/
public void Logging(string home, string dbName,
out DatabaseEnvironment env, out RecnoDatabase recnoDB)
{
string dbFileName = dbName + ".db";
Configuration.ClearDir(home);
// Open environment with logging subsystem.
DatabaseEnvironmentConfig envConfig =
new DatabaseEnvironmentConfig();
envConfig.Create = true;
envConfig.UseLogging = true;
envConfig.LogSystemCfg = new LogConfig();
envConfig.LogSystemCfg.FileMode = 755;
envConfig.LogSystemCfg.ZeroOnCreate = true;
envConfig.UseMPool = true;
env = DatabaseEnvironment.Open(home, envConfig);
/*
* Open recno database, write 100000 records into
* the database and close it.
*/
RecnoDatabaseConfig recnoConfig =
new RecnoDatabaseConfig();
recnoConfig.Creation = CreatePolicy.IF_NEEDED;
recnoConfig.Env = env;
// The db needs mpool to open.
recnoConfig.NoMMap = false;
recnoDB = RecnoDatabase.Open(dbFileName,
recnoConfig);
for (int i = 0; i < 1000; i++)
recnoDB.Append(new DatabaseEntry(
ASCIIEncoding.ASCII.GetBytes("key")));
}
}
}