public void Linq4_Customers_CustomersAndDateOfEntry()
{
var result = SelectExtensions.Linq4(DataSource.Customers).ToList();
Assert.That(() => result.Count, Is.EqualTo(DataSource.Customers.Count - 1));
foreach (var(customer, dateOfEntry) in result)
{
Assert.That(FindCustomerOrdersMinDate(customer), Is.EqualTo(dateOfEntry));
}
}
public void Linq4_NullCustomer_ThrowsArgumentNullException()
{
Assert.That(() => SelectExtensions.Linq4(null).ToList(), Throws.ArgumentNullException);
}