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PONHibernate.PropertyValueException : not-null property references a null or transient and dependent unit tests
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  1. PONHibernate.PropertyValueException : not-null property references a null or transient and dependent unit tests
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    copied!<p>I have a strange behaviour when one unit test becomes dependent on another one and fails because of object in NHiberante session. </p> <p>I'm getting the 'NHibernate.PropertyValueException : not-null property references a null or transient' only if I run all unit tests from fixture (for the simplicity I have only two tests). If I run one of them it always passed. </p> <p>I feel that I should do some clean-up. I tried session.Clean() and session.Evict(obj), but it didn't help. Could somebody explain what is going on here?</p> <p>Entity:</p> <pre><code>public class Order { public virtual Guid Id { get; protected set; } public virtual string Name { get; set; } } </code></pre> <p>Mapping (with Loquacious API):</p> <pre><code>public class OrderMapping : ClassMapping&lt;Order&gt; { public OrderMapping() { Id(e =&gt; e.Id, m =&gt; { m.Generator(Generators.Guid); m.Column("OrderId"); }); Property(e =&gt; e.Name, m =&gt; m.NotNullable(true)); } } </code></pre> <p>Fixture ctor (the in-memory database are used):</p> <pre><code>var config = new Configuration(); config.CurrentSessionContext&lt;ThreadStaticSessionContext&gt;(); config.DataBaseIntegration(db =&gt; { db.ConnectionString = "uri=file://:memory:,Version=3"; db.Dialect&lt;SQLiteDialect&gt;(); db.Driver&lt;CsharpSqliteDriver&gt;(); db.ConnectionReleaseMode = ConnectionReleaseMode.OnClose; db.KeywordsAutoImport = Hbm2DDLKeyWords.AutoQuote; db.LogSqlInConsole = true; }) .SessionFactory() .GenerateStatistics(); var mapper = new ModelMapper(); mapper.AddMappings(Assembly.GetExecutingAssembly().GetExportedTypes()); config.AddMapping(mapper.CompileMappingForAllExplicitlyAddedEntities()); ISessionFactory sessionFactory = config.BuildSessionFactory(); this.session = sessionFactory.OpenSession(); // This will leave the connection open new SchemaExport(config).Execute( true, true, false, this.session.Connection, null); CurrentSessionContext.Bind(this.session); </code></pre> <p>Unit tests:</p> <pre><code>[Test] [ExpectedException(typeof(PropertyValueException))] public void Order_name_is_required() { var order = new Order(); this.session.Save(order); } [Test] public void Order_was_updated() { var order = new Order { Name = "Name 1" }; this.session.Save(order); this.session.Flush(); order.Name = "Name 2"; this.session.Update(order); Assert.AreEqual(this.session.Get&lt;Order&gt;(order.Id).Name, "Name 2"); } </code></pre> <p>Order was updated fails with the 'NHibernate.PropertyValueException : not-null property references a null or transient' exception. And actually any other unit test will fail if write after.</p> <p><strong>EDIT 1</strong> Found a solution. Last time when I tried to clean-up the session I used</p> <pre><code>[TestFixtureTearDown] </code></pre> <p>instead of </p> <pre><code>[TearDown] public void TearDown() { this.session.Clear(); } </code></pre> <p>Which did all clean-up properly before <strong>each</strong> test run and allowed to use the same session and do not re-create the in-memory database structure. Sorry, I made the obvious mistake.</p>
 

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