public void ChangeToStringImperativ()
{
using (ProductionDataContext db = new ProductionDataContext())
{
List <ProductVendor> vendorList = db.GetFirstNProductVendor(20);
List <Product> productList = db.GetFirstNProducts(20);
string result = productList.ChangeToStringImperativ(vendorList);
string firstPair = result.Substring(0, result.IndexOf('\n') - 1);
Assert.AreEqual("Adjustable Race-Litware, Inc.", firstPair);
}
}