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);
}
}
}