public void Scenario_Using_two_databases()
        {
            EnsureDatabaseInitialized(() => new LocalDbLoginsContext());
            EnsureDatabaseInitialized(() => new SimpleLocalDbModelContext());

            using (var context = new LocalDbLoginsContext())
            {
                var login = new Login
                    {
                        Id = Guid.NewGuid(),
                        Username = "******"
                    };
                context.Logins.Add(login);
                context.SaveChanges();

                // Scenario ends; simple validation of final state follows
                Assert.Same(login, context.Logins.Find(login.Id));
                Assert.Equal(EntityState.Unchanged, GetStateEntry(context, login).State);

                Assert.Equal(@"(localdb)\v11.0", context.Database.Connection.DataSource);
            }

            using (var context = new SimpleLocalDbModelContext())
            {
                var category = new Category
                    {
                        Id = "Books"
                    };
                var product = new Product
                    {
                        Name = "The Unbearable Lightness of Being",
                        Category = category
                    };
                context.Products.Add(product);
                context.SaveChanges();

                // Scenario ends; simple validation of final state follows
                Assert.Equal(EntityState.Unchanged, GetStateEntry(context, product).State);
                Assert.Equal(EntityState.Unchanged, GetStateEntry(context, category).State);
                Assert.Equal("Books", product.CategoryId);
                Assert.Same(category, product.Category);
                Assert.True(category.Products.Contains(product));

                Assert.Equal(@"(localdb)\v11.0", context.Database.Connection.DataSource);
            }
        }
        public void Scenario_Relate_using_FK()
        {
            EnsureDatabaseInitialized(() => new SimpleLocalDbModelContext());

            using (var context = new SimpleLocalDbModelContext())
            {
                var product = new Product
                    {
                        Name = "Bovril",
                        CategoryId = "Foods"
                    };
                context.Products.Add(product);
                context.SaveChanges();

                // Scenario ends; simple validation of final state follows
                Assert.NotNull(product);
                Assert.Equal(EntityState.Unchanged, GetStateEntry(context, product).State);
                Assert.Equal("Foods", product.CategoryId);

                Assert.Equal(@"(localdb)\v11.0", context.Database.Connection.DataSource);
            }
        }
        public void Scenario_Insert()
        {
            EnsureDatabaseInitialized(() => new SimpleLocalDbModelContext());

            using (var context = new SimpleLocalDbModelContext())
            {
                var product = new Product
                    {
                        Name = "Vegemite"
                    };
                context.Products.Add(product);
                context.SaveChanges();

                // Scenario ends; simple validation of final state follows
                Assert.NotEqual(0, product.Id);
                Assert.Equal(EntityState.Unchanged, GetStateEntry(context, product).State);

                Assert.Equal(@"(localdb)\v11.0", context.Database.Connection.DataSource);
            }
        }
        public void Scenario_Update()
        {
            EnsureDatabaseInitialized(() => new SimpleLocalDbModelContext());

            using (var context = new SimpleLocalDbModelContext())
            {
                var product = context.Products.Find(1);
                product.Name = "iSnack 2.0";
                context.SaveChanges();

                // Scenario ends; simple validation of final state follows
                Assert.Equal("iSnack 2.0", product.Name);
                Assert.Equal(EntityState.Unchanged, GetStateEntry(context, product).State);

                Assert.Equal(@"(localdb)\v11.0", context.Database.Connection.DataSource);
            }
        }
        public void Scenario_Relate_using_query()
        {
            EnsureDatabaseInitialized(() => new SimpleLocalDbModelContext());

            using (new TransactionScope())
            {
                using (var context = new SimpleLocalDbModelContext())
                {
                    var category = context.Categories.Find("Foods");
                    var product = new Product() { Name = "Bovril", Category = category };
                    context.Products.Add(product);
                    context.SaveChanges();

                    // Scenario ends; simple validation of final state follows
                    Assert.NotNull(product);
                    Assert.Equal(EntityState.Unchanged, GetStateEntry(context, product).State);

                    Assert.NotNull(category);
                    Assert.Equal(EntityState.Unchanged, GetStateEntry(context, category).State);

                    Assert.Equal("Foods", product.CategoryId);
                    Assert.Same(category, product.Category);
                    Assert.True(category.Products.Contains(product));

                    Assert.Equal(@"(localdb)\v11.0", context.Database.Connection.DataSource);
                }
            }
        }