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using System;
using System.IO;
using System.Collections.Generic;
using log4net.Config;
using NUnit.Framework;
using NUnit.Framework.Constraints;
using OpenMetaverse;
using OpenSim.Framework;
using log4net;
using System.Data;
using System.Data.Common;
using System.Reflection;
namespace OpenSim.Data.Tests
{
/// <summary>This is a base class for testing any Data service for any DBMS.
/// Requires NUnit 2.5 or better (to support the generics).
/// </summary>
/// <typeparam name="TConn"></typeparam>
/// <typeparam name="TService"></typeparam>
public class BasicDataServiceTest<TConn, TService>
where TConn : DbConnection, new()
where TService : class, new()
{
protected string m_connStr;
private TService m_service;
private string m_file;
// TODO: Is this in the right place here?
// Later: apparently it's not, but does it matter here?
// protected static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
protected ILog m_log; // doesn't matter here that it's not static, init to correct type in instance .ctor
public BasicDataServiceTest()
: this("")
{
}
public BasicDataServiceTest(string conn)
{
m_connStr = !String.IsNullOrEmpty(conn) ? conn : DefaultTestConns.Get(typeof(TConn));
m_log = LogManager.GetLogger(this.GetType());
OpenSim.Tests.Common.TestLogging.LogToConsole(); // TODO: Is that right?
}
/// <summary>
/// To be overridden in derived classes. Do whatever init with the m_service, like setting the conn string to it.
/// You'd probably want to to cast the 'service' to a more specific type and store it in a member var.
/// This framework takes care of disposing it, if it's disposable.
/// </summary>
/// <param name="service">The service being tested</param>
protected virtual void InitService(object service)
{
}
[TestFixtureSetUp]
public void Init()
{
// Sorry, some SQLite-specific stuff goes here (not a big deal, as its just some file ops)
if (typeof(TConn).Name.StartsWith("Sqlite"))
{
// SQLite doesn't work on power or z linux
if (Directory.Exists("/proc/ppc64") || Directory.Exists("/proc/dasd"))
Assert.Ignore();
// for SQLite, if no explicit conn string is specified, use a temp file
if (String.IsNullOrEmpty(m_connStr))
{
m_file = Path.GetTempFileName() + ".db";
m_connStr = "URI=file:" + m_file + ",version=3";
}
}
if (String.IsNullOrEmpty(m_connStr))
{
string msg = String.Format("Connection string for {0} is not defined, ignoring tests", typeof(TConn).Name);
m_log.Warn(msg);
Assert.Ignore(msg);
}
// Try the connection, ignore tests if Open() fails
using (TConn conn = new TConn())
{
conn.ConnectionString = m_connStr;
try
{
conn.Open();
conn.Close();
}
catch
{
string msg = String.Format("{0} is unable to connect to the database, ignoring tests", typeof(TConn).Name);
m_log.Warn(msg);
Assert.Ignore(msg);
}
}
// If we manage to connect to the database with the user
// and password above it is our test database, and run
// these tests. If anything goes wrong, ignore these
// tests.
try
{
m_service = new TService();
InitService(m_service);
}
catch (Exception e)
{
m_log.Error(e.ToString());
Assert.Ignore();
}
}
[TestFixtureTearDown]
public void Cleanup()
{
if (m_service != null)
{
if( m_service is IDisposable)
((IDisposable)m_service).Dispose();
m_service = null;
}
if( !String.IsNullOrEmpty(m_file) && File.Exists(m_file) )
File.Delete(m_file);
}
protected virtual DbConnection Connect()
{
DbConnection cnn = new TConn();
cnn.ConnectionString = m_connStr;
cnn.Open();
return cnn;
}
protected virtual void ExecuteSql(string sql)
{
using (DbConnection dbcon = Connect())
{
using (DbCommand cmd = dbcon.CreateCommand())
{
cmd.CommandText = sql;
cmd.ExecuteNonQuery();
}
}
}
protected delegate bool ProcessRow(IDataReader reader);
protected virtual int ExecQuery(string sql, bool bSingleRow, ProcessRow action)
{
int nRecs = 0;
using (DbConnection dbcon = Connect())
{
using (DbCommand cmd = dbcon.CreateCommand())
{
cmd.CommandText = sql;
CommandBehavior cb = bSingleRow ? CommandBehavior.SingleRow : CommandBehavior.Default;
using (DbDataReader rdr = cmd.ExecuteReader(cb))
{
while (rdr.Read())
{
nRecs++;
if (!action(rdr))
break;
}
}
}
}
return nRecs;
}
/// <summary>Drop tables (listed as parameters). There is no "DROP IF EXISTS" syntax common for all
/// databases, so we just DROP and ignore an exception.
/// </summary>
/// <param name="tables"></param>
protected virtual void DropTables(params string[] tables)
{
foreach (string tbl in tables)
{
try
{
ExecuteSql("DROP TABLE " + tbl + ";");
}catch
{
}
}
}
/// <summary>Clear tables listed as parameters (without dropping them).
/// </summary>
/// <param name="tables"></param>
protected virtual void ResetMigrations(params string[] stores)
{
string lst = "";
foreach (string store in stores)
{
string s = "'" + store + "'";
if (lst == "")
lst = s;
else
lst += ", " + s;
}
string sCond = stores.Length > 1 ? ("in (" + lst + ")") : ("=" + lst);
try
{
ExecuteSql("DELETE FROM migrations where name " + sCond);
}
catch
{
}
}
/// <summary>Clear tables listed as parameters (without dropping them).
/// </summary>
/// <param name="tables"></param>
protected virtual void ClearTables(params string[] tables)
{
foreach (string tbl in tables)
{
try
{
ExecuteSql("DELETE FROM " + tbl + ";");
}
catch
{
}
}
}
}
}
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