public void _02_Constructor_ShouldUseTheAccountsOfTheCustomerAsTheSourceForTheListView()
{
//Arrange
Customer customer = new CustomerBuilder().WithId().WithAccounts().Build();
//Act
InitializeWindow(customer);
//Assert
ICollection <Account> accounts = customer.TryGetAccounts();
Assert.That(_listView.ItemsSource, Is.SameAs(accounts),
"The ItemsSource of the ListView should be the very same list of Accounts of the customer.");
}
public void _04_AddAccountButton_Click_AccountServiceSucceeds_ShouldResetUI()
{
//Arrange
Customer customer = new CustomerBuilder().WithId().WithAccounts().Build();
InitializeWindow(customer);
_errorTextBlock.Text = "Some previous error message";
string accountNumber = Guid.NewGuid().ToString();
_accountNumberTextBox.Text = accountNumber;
AccountType type = Random.NextAccountType();
_typeComboBox.SelectedValue = type;
ICollection <Account> accounts = customer.TryGetAccounts();
Result successResult = Result.Success();
_accountServiceMock
.Setup(service =>
service.AddNewAccountForCustomer(It.IsAny <Customer>(), It.IsAny <string>(), It.IsAny <AccountType>()))
.Returns(successResult).Callback(() =>
{
accounts.Add(new AccountBuilder().WithCustomerId(customer.Id).Build());
});
//Act
_addAccountButton.FireClickEvent();
//Assert
Assert.That(string.IsNullOrEmpty(_errorTextBlock.Text), Is.True,
"The error TextBlock should be empty after the add button is clicked. Any previous error message should be cleared.");
_accountServiceMock.Verify(service => service.AddNewAccountForCustomer(customer, accountNumber, type), Times.Once,
"The AddNewAccountForCustomer method of the account service is not called correctly.");
Assert.That(string.IsNullOrEmpty(_accountNumberTextBox.Text), Is.True,
"The account TextBox should be cleared after the add succeeds.");
ItemCollection items = _listView.Items;
Assert.That(items.Count, Is.EqualTo(accounts.Count),
"The 'Items' collection of the ListView should have one account more after the account is added. " +
"Tip: try to call the 'Refresh' method on the 'Items' collection to tell WPF that the number of accounts of the customer changed.");
}