public void DeleteCustomer_TestIsCustomerDeleted()
{
using (var db = new NORTHWNDEntities())
{
string companyName = "Telerik";
Customer testCustomer = new Customer()
{
CompanyName = companyName,
CustomerID = "ABC12"
};
CustomerOperations.AddCustomer(testCustomer);
// Using ToList() to force execution
var numberOfCustomersAfterAdding = (from c in db.Customers
where c.CompanyName == companyName
select c).ToList();
// Delete customer added for test
CustomerOperations.DeleteCustomer(testCustomer);
var numberOfCustomersAfterDeleting = (from c in db.Customers
where c.CompanyName == companyName
select c).ToList();
Assert.AreEqual(numberOfCustomersAfterAdding.Count(),
numberOfCustomersAfterDeleting.Count() + 1,
"Check is customer deleted");
}
}
public void AddCustomer_CheckIsFieldsCorrectAdded()
{
using (var db = new NORTHWNDEntities())
{
string companyName = "Telerik";
string customerID = "ABC12";
Customer testCustomer = new Customer()
{
CompanyName = companyName,
CustomerID = customerID
};
CustomerOperations.AddCustomer(testCustomer);
var getAddedCustomer = (from c in db.Customers
where c.CompanyName == companyName
select c).ToList();
Assert.AreEqual(getAddedCustomer.FirstOrDefault().CompanyName, companyName, "Company name is incorect.");
Assert.AreEqual(getAddedCustomer.FirstOrDefault().CustomerID, customerID, "CustomerID is incorect");
// Delete customer added for test
CustomerOperations.DeleteCustomer(testCustomer);
}
}
public static void AddCustomer(Customer customer)
{
using (var db = new NORTHWNDEntities())
{
db.Customers.Add(customer);
db.SaveChanges();
}
Console.WriteLine("Customer added.");
}
public static void Main()
{
using (var db = new NORTHWNDEntities())
{
string companyName = "Telerik";
var telerikCustomers = from c in db.Customers
where c.CompanyName == companyName
select c;
foreach (var customer in telerikCustomers)
{
db.Customers.Remove(customer);
}
db.SaveChanges();
// Create and add customer in NORTHWND database
Customer testCustomer = new Customer()
{
CompanyName = companyName,
CustomerID = "ABC42"
};
Console.WriteLine("First customer is added");
db.Customers.Add(testCustomer);
Console.WriteLine("Changes saved");
db.SaveChanges();
// Create two other customers and try to add them in NORTHWND database
// If we try to add 'incorrectTestCustomer' SaveChanges will rollback operation (no customers added)
// If we comment adding 'incorrectTestCustomer' this will work correct (will commit changes)
Customer secondTestCustomer = new Customer()
{
CompanyName = companyName,
CustomerID = "ABC98"
};
Customer incorrectTestCustomer = new Customer()
{
CompanyName = companyName,
CustomerID = "ABC98"
};
Console.WriteLine("Second customer is added");
db.Customers.Add(secondTestCustomer);
Console.WriteLine("Adding incorrect Customer");
// Uncomment line below. This will trow exception and call rollback.
//db.Customers.Add(incorrectTestCustomer);
//Console.WriteLine("Trying to save changes. This will throw exception");
db.SaveChanges();
}
}
public static void ModifyCustomerCompanyName(Customer customer, string newName)
{
using (var db = new NORTHWNDEntities())
{
var customerFromDB = db.Customers.FirstOrDefault(x => x.CustomerID == customer.CustomerID);
customerFromDB.CompanyName = newName;
db.SaveChanges();
}
Console.WriteLine("Customer updated.");
}
public static void DeleteCustomer(Customer customer)
{
using (var db = new NORTHWNDEntities())
{
var customerFromDB = db.Customers.FirstOrDefault(x => x.CustomerID == customer.CustomerID);
db.Customers.Remove(customerFromDB);
db.SaveChanges();
}
Console.WriteLine("Customer deleted.");
}
public static void Main()
{
using (var db = new NORTHWNDEntities())
{
Customer testCustomer = new Customer()
{
CompanyName = "Telerik",
CustomerID = "ABC12"
};
CustomerOperations.AddCustomer(testCustomer);
//CustomerOperations.DeleteCustomer(testCustomer);
//CustomerOperations.ModifyCustomerCompanyName(testCustomer, "Telerik Academy");
}
}
public void ModifyCustomerCompanyName_TestIsCompanyNameModified()
{
using (var db = new NORTHWNDEntities())
{
string companyName = "Telerik";
string companyNewName = "Telerik Academy";
Customer testCustomer = new Customer()
{
CompanyName = companyName,
CustomerID = "ABC12"
};
CustomerOperations.AddCustomer(testCustomer);
CustomerOperations.ModifyCustomerCompanyName(testCustomer, companyNewName);
var getModifiedCustomer = (from c in db.Customers
where c.CompanyName == companyNewName
select c).ToList();
// Delete customer added for test
CustomerOperations.DeleteCustomer(testCustomer);
Assert.AreEqual(companyNewName, getModifiedCustomer.FirstOrDefault().CompanyName, "Company name is not modified");
}
}
/// <summary>
/// Create a new Customer object.
/// </summary>
/// <param name="customerID">Initial value of the CustomerID property.</param>
/// <param name="companyName">Initial value of the CompanyName property.</param>
/// <param name="address">Initial value of the Address property.</param>
public static Customer CreateCustomer(global::System.String customerID, global::System.String companyName, CommonAddress address)
{
Customer customer = new Customer();
customer.CustomerID = customerID;
customer.CompanyName = companyName;
customer.Address = StructuralObject.VerifyComplexObjectIsNotNull(address, "Address");
return customer;
}
/// <summary>
/// Deprecated Method for adding a new object to the Customers EntitySet. Consider using the .Add method of the associated ObjectSet<T> property instead.
/// </summary>
public void AddToCustomers(Customer customer)
{
base.AddObject("Customers", customer);
}
