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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2009 Oracle. All rights reserved.
*
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Threading;
using NUnit.Framework;
using BerkeleyDB;
namespace CsharpAPITest
{
[TestFixture]
public class HashCursorTest
{
private string testFixtureName;
private string testFixtureHome;
private string testName;
private string testHome;
[TestFixtureSetUp]
public void RunBeforeTests()
{
testFixtureName = "HashCursorTest";
testFixtureHome = "./TestOut/" + testFixtureName;
}
[Test]
public void TestAddToLoc()
{
HashDatabase db;
HashCursor cursor;
KeyValuePair<DatabaseEntry, DatabaseEntry> pair;
testName = "TestAddToLoc";
testHome = testFixtureHome + "/" + testName;
Configuration.ClearDir(testHome);
/*
* Open a hash database and cursor and then
* add record("key", "data") into database.
*/
GetHashDBAndCursor(testHome, testName, out db, out cursor);
AddOneByCursor(cursor);
/*
* Add the new record("key","data1") as the first
* of the data item of "key".
*/
pair = new KeyValuePair<DatabaseEntry, DatabaseEntry>(
new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("key")),
new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("data1")));
cursor.Add(pair, Cursor.InsertLocation.FIRST);
/*
* Confirm that the new record is added as the first of
* the data item of "key".
*/
cursor.Move(new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("key")), true);
Assert.AreEqual(ASCIIEncoding.ASCII.GetBytes("data1"),
cursor.Current.Value.Data);
cursor.Close();
db.Close();
}
[Test]
public void TestAddUnique()
{
HashDatabase db;
HashCursor cursor;
KeyValuePair<DatabaseEntry, DatabaseEntry> pair;
testName = "TestAddUnique";
testHome = testFixtureHome + "/" + testName;
Configuration.ClearDir(testHome);
// Open a database and cursor.
HashDatabaseConfig dbConfig = new HashDatabaseConfig();
dbConfig.Creation = CreatePolicy.IF_NEEDED;
/*
* To put no duplicate data, the database should be
* set to be sorted.
*/
dbConfig.Duplicates = DuplicatesPolicy.SORTED;
db = HashDatabase.Open(
testHome + "/" + testName + ".db", dbConfig);
cursor = db.Cursor();
// Add record("key", "data") into database.
AddOneByCursor(cursor);
/*
* Fail to add duplicate record("key","data").
*/
pair = new KeyValuePair<DatabaseEntry, DatabaseEntry>(
new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("key")),
new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("data")));
try
{
cursor.AddUnique(pair);
}
catch (KeyExistException)
{
}
finally
{
cursor.Close();
db.Close();
}
}
[Test]
public void TestDuplicate()
{
HashDatabase db;
HashCursor cursor, dupCursor;
KeyValuePair<DatabaseEntry, DatabaseEntry> pair;
testName = "TestDuplicate";
testHome = testFixtureHome + "/" + testName;
Configuration.ClearDir(testHome);
GetHashDBAndCursor(testHome, testName,
out db, out cursor);
/*
* Add a record("key", "data") by cursor and move
* the cursor to the current record.
*/
AddOneByCursor(cursor);
cursor.Refresh();
//Duplicate a new cursor to the same position.
dupCursor = cursor.Duplicate(true);
// Overwrite the record.
dupCursor.Overwrite(new DatabaseEntry(
ASCIIEncoding.ASCII.GetBytes("newdata")));
// Confirm that the original data doesn't exist.
pair = new KeyValuePair<DatabaseEntry, DatabaseEntry>(
new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("key")),
new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("data")));
Assert.IsFalse(dupCursor.Move(pair, true));
dupCursor.Close();
cursor.Close();
db.Close();
}
[Test]
public void TestInsertToLoc()
{
HashDatabase db;
HashDatabaseConfig dbConfig;
HashCursor cursor;
DatabaseEntry data;
KeyValuePair<DatabaseEntry, DatabaseEntry> pair;
string dbFileName;
testName = "TestInsertToLoc";
testHome = testFixtureHome + "/" + testName;
dbFileName = testHome + "/" + testName + ".db";
Configuration.ClearDir(testHome);
// Open database and cursor.
dbConfig = new HashDatabaseConfig();
dbConfig.Creation = CreatePolicy.IF_NEEDED;
/*
* The database should be set to be unsorted to
* insert before/after a certain record.
*/
dbConfig.Duplicates = DuplicatesPolicy.UNSORTED;
db = HashDatabase.Open(dbFileName, dbConfig);
cursor = db.Cursor();
// Add record("key", "data") into database.
AddOneByCursor(cursor);
/*
* Insert the new record("key","data1") after the
* record("key", "data").
*/
data = new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("data1"));
cursor.Insert(data, Cursor.InsertLocation.AFTER);
/*
* Move the cursor to the record("key", "data") and
* confirm that the next record is the one just inserted.
*/
pair = new KeyValuePair<DatabaseEntry, DatabaseEntry>(
new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("key")),
new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("data")));
Assert.IsTrue(cursor.Move(pair, true));
Assert.IsTrue(cursor.MoveNext());
Assert.AreEqual(ASCIIEncoding.ASCII.GetBytes("key"),
cursor.Current.Key.Data);
Assert.AreEqual(ASCIIEncoding.ASCII.GetBytes("data1"),
cursor.Current.Value.Data);
cursor.Close();
db.Close();
}
public void GetHashDBAndCursor(string home, string name,
out HashDatabase db, out HashCursor cursor)
{
string dbFileName = home + "/" + name + ".db";
HashDatabaseConfig dbConfig = new HashDatabaseConfig();
dbConfig.Creation = CreatePolicy.IF_NEEDED;
db = HashDatabase.Open(dbFileName, dbConfig);
cursor = db.Cursor();
}
public void AddOneByCursor(HashCursor cursor)
{
DatabaseEntry key, data;
KeyValuePair<DatabaseEntry, DatabaseEntry> pair;
key = new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("key"));
data = new DatabaseEntry(ASCIIEncoding.ASCII.GetBytes("data"));
pair = new KeyValuePair<DatabaseEntry,DatabaseEntry>(key, data);
cursor.Add(pair);
}
}
}
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