public void SaveCommandDoesNotExecuteIfCustomerIsInvalid()
{
Customer customer = TestHelpers.GetSampleCustomer();
AddCustomerViewModel viewModel = new AddCustomerViewModel(customer);
Assert.IsTrue(customer.IsValid);
// Invalid address should disable save command.
Assert.IsTrue(viewModel.SaveCommand.CanExecute(null));
customer.AddressLineOne = TestHelpers.STRING_LONGER_THAN_255_CHARS;
Assert.IsFalse(customer.IsValid);
Assert.IsFalse(viewModel.SaveCommand.CanExecute(null));
customer.AddressLineOne = "Sample Address";
Assert.IsTrue(customer.IsValid);
// Invalid date should disable save command.
Assert.IsTrue(viewModel.SaveCommand.CanExecute(null));
customer.DateOfBirth = new DateTime(1410, 07, 21);
Assert.IsFalse(customer.IsValid);
Assert.IsFalse(viewModel.SaveCommand.CanExecute(null));
customer.DateOfBirth = new DateTime(1985, 7, 8);
Assert.IsTrue(customer.IsValid);
// Invalid name should disable save command.
Assert.IsTrue(viewModel.SaveCommand.CanExecute(null));
customer.Name = TestHelpers.STRING_LONGER_THAN_50_CHARS;
Assert.IsFalse(customer.IsValid);
Assert.IsFalse(viewModel.SaveCommand.CanExecute(null));
customer.Name = "Test Name";
Assert.IsTrue(customer.IsValid);
}
/// <summary>
/// Creates an instance of the SaveCommand.
/// </summary>
/// <param name="addCustomerViewModel">A view model on which command's method will be invoked.</param>
public SaveCommand(AddCustomerViewModel addCustomerViewModel)
{
this.addCustomerViewModel = addCustomerViewModel;
}
/// <summary>
/// Invokes the update customer window.
/// </summary>
internal void UpdateCustomer()
{
try
{
// Make a copy of the current customer to avoid directly editing the customer in the data grid.
// The customer will be modified in the cache and in the database
// and the grid view will be updated from the cache or the database.
Customer c = new Customer();
c.Copy(this.SelectedCustomer);
AddCustomerView addCustomerView = new AddCustomerView();
AddCustomerViewModel addCustomerViewModel = new AddCustomerViewModel(c);
addCustomerViewModel.SaveCompleted += (s, e) =>
{
// Get latest data after save.
this.SelectedCustomer = null;
addCustomerView.Close();
this.GetData();
};
addCustomerViewModel.Cancelled += (s, e) =>
{
this.SelectedCustomer = null;
addCustomerView.Close();
};
addCustomerView.DataContext = addCustomerViewModel;
addCustomerView.ShowDialog();
this.SelectedCustomer = null;
}
catch (Exception ex)
{
InfoDialogViewModel.ShowDialog(ex.Message, "Unhandled Exception");
Log.LogException(ex, "MainViewModel.cs");
}
}
/// <summary>
/// Invokes the add new customer window .
/// </summary>
internal void AddCustomer()
{
try
{
AddCustomerView addCustomerView = new AddCustomerView();
// Set the date of birth to today, so it's not set to default 01/01/0001
Customer customer = new Customer() { DateOfBirth = DateTime.Now };
AddCustomerViewModel addCustomerViewModel = new AddCustomerViewModel(customer);
addCustomerViewModel.SaveCompleted += (s, e) =>
{
// Get latest data after save.
this.SelectedCustomer = null;
addCustomerView.Close();
this.GetData();
};
addCustomerViewModel.Cancelled += (s, e) =>
{
this.SelectedCustomer = null;
addCustomerView.Close();
};
addCustomerView.DataContext = addCustomerViewModel;
addCustomerView.ShowDialog();
}
catch (Exception ex)
{
InfoDialogViewModel.ShowDialog(ex.Message, "Unhandled Exception");
Log.LogException(ex, "MainViewModel.cs");
}
}
public void SettingCustomerToAddCustomerViewModelTriggersPropertyChanged()
{
Customer customer = new Customer();
AddCustomerViewModel viewModel = new AddCustomerViewModel(customer);
viewModel.PropertyChanged += (s, e) =>
{
Assert.AreEqual("SelectedCustomer", e.PropertyName);
Assert.AreEqual(customer, viewModel.SelectedCustomer);
};
viewModel.SelectedCustomer = customer;
}