Domain Driven Design & Test Driven Design\Development with Entity Framework Part 1.b Integration Testing for ObjectContext

by mosessaur| 23 February 2009| 0 Comments

I decided to provide some integration testing before proceeding as a proof of concept. In integration testing I will connect to the database and perform unit testing while connecting to the database.\

This unit test is almost identical to the one in my previous post. Except here I am testing the results that is coming out from EF and Database.

My target is to test IDataContext Implemented methods in NorthwindDataContext. Find below the Integration unit testing class. 

[TestClass]
public class NorthwindDataContextIntegrationTest : IDisposable
{
    IDataContext _context;
    public NorthwindDataContextIntegrationTest()
    {
        _context = new NorthwindDataContext(ConfigurationManager
                    .ConnectionStrings["NorthwindDatabaseContext"]
                    .ConnectionString);
    }
    
    [TestMethod]
    public void NorthwindDataContext_CategoryDataSource_Returns_CategorySet()
    {
        Assert.IsNotNull(_context.CategoryDataSource);
    }
    
    [TestMethod]
    public void NorthwindDataContext_ProductDataSource_Returns_ProductSet()
    {
        Assert.IsNotNull(_context.ProductDataSource);
    }

    [TestMethod]
    public void NorthwindDataContext_SupplierDataSource_Returns_SupplierSet()
    {
        Assert.IsNotNull(_context.SupplierDataSource);
    }
    
    [TestMethod]
    public void NorthwindDataContext_Insert_Should_Change_Instance_EntityState_To_Added()
    {
        var category = Category.CreateCategory(1, "New Category");
        
        _context.InsertOnSubmit("CategorySet",category);

        Assert.AreEqual(category.EntityState, System.Data.EntityState.Added);
    }

    [TestMethod]
    public void NorthwindDataContext_Delete_Should_Change_Instance_EntityState_To_Deleted()
    {
        var category = _context.CategoryDataSource.FirstOrDefault();
        
        _context.DeleteOnSubmit(category);

        Assert.AreEqual(category.EntityState, System.Data.EntityState.Deleted);
    }
    
    public void Dispose()
    {
        ((NorthwindDataContext)_context).Dispose();
    }
}

Download Source Code.

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