NHibernate - Sqlite in memory DB - Can't test the mapping files - nhibernate

Question

I wanted to test whether my entities can be persisted to the database or not, so I came across this article:
http://www.codethinked.com/nhibernate-20-sqlite-and-in-memory-databases
My code to initialize the session factory is the same the one in the article:
public class NHibernateInMemoryTestFixtureBase
{
protected static ISessionFactory sessionFactory;
protected static Configuration configuration;
public static void InitalizeSessionFactory(params Assembly[] assemblies)
{
if (sessionFactory != null)
return;
var properties = new Dictionary<string, string>();
properties.Add("connection.driver_class", "NHibernate.Driver.SQLite20Driver");
properties.Add("dialect", "NHibernate.Dialect.SQLiteDialect");
properties.Add("connection.provider", "NHibernate.Connection.DriverConnectionProvider");
properties.Add("connection.connection_string", "Data Source=:memory:;Version=3;New=True;");
properties.Add("connection.release_mode", "on_close");
configuration = new Configuration();
configuration.Properties = properties;
foreach (Assembly assembly in assemblies)
{
configuration = configuration.AddAssembly(assembly);
}
sessionFactory = configuration.BuildSessionFactory();
}
public ISession CreateSession()
{
ISession openSession = sessionFactory.OpenSession();
IDbConnection connection = openSession.Connection;
new SchemaExport(configuration).Execute(false, true, false, true, connection, null);
return openSession;
}
}
And here's my test:
[Test]
public void IWillChangeThisNameLater()
{
InitalizeSessionFactory(typeof(LogRepository).Assembly);
var session = this.CreateSession();
Log log = Log.New("a", "b", "I");
session.Save(log);
session.Flush();
Assert.Greater(log.IDColumn, 0);
}
And the problem is, I removed the "a" property of Log from the log.hbm.xml and session.Save(log) is not throwing an exception or anything, it just works...
This must be obvious and on porpose, but I fail to find out why that is, how can it save it if is not mapped, is that how the in memory database work? how can I test my mapping then?
I mainly did this in-memory test so that I can know right away if a valid entity is failing to persist, of course that would include missing properties on the mapping file.
Any thoughts will be appreciated.
EDIT:
As requested,
the Log entity definition:
public class Log : DomainBase<Log, ILogRepository<Log>>
{
private int logId;
private string tableName;
private string field;
private string userLogin;
protected Log()
{
}
protected Log(string tableName, string field, string userLogin)
{
TableName = tableName;
Field = field;
UserLogin = userLogin;
}
public virtual int LogId { get; set; }
public virtual string TableName { get; set; }
public virtual string Field { get; set; }
public virtual string UserLogin { get; set; }
}
the Log Mapping:
<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="DomainProject" table="Log" lazy="true">
<id name="logId" column="ID" type="int">
<generator class="native" />
</id>
<property name="TableName" column="TableName" type="string" />
<property name="Field" column="Field" type="string" />
<property name="UserLogin" column="UserLogin" type="string" />
</class>
</hibernate-mapping>

Answer 1

If a class contains a property that is not mentioned in the mappings, NHibernate will ignore the property.