Refactor Code

Setting Up Objects Under Test
by azamsharp on 5/3/2008 6:30:11 PM
One of the issues that I face when writing unit test is to set up the objects under tests with correct data so that they can be tested. I want to know what is the best way to set up the objects. Here are my couple of ways:
public void should_add_customer_successfully()
{
Customer c = new Customer()
{ FirstName = "john", LastName = "Doe" };

// OR

Customer c = FakeCustomerRepository.CreateCustomer();

}
Refactor it!

The problem usually isn't "how do I setup the properties of the object under test" but it's more like... I have TONS of setup code to prepare my environment, and only a few asserts! One way to reduce this is to introduce a pattern known as Object Mother or Builder. A fluent interface can be applied here that will help in test solubility. you can get really complex in your builder, but your tests get WAY more terse & readable.
by subdigital on 5/4/2008 9:15:02 PM
public void an_employee_with_a_sales_history_of_1mil_and_a_seniority_of_4_years_should_get_a_15_pct_raise()
{
var emp = EmployeeBuilder.New("joe", "blow")
.WithSale(100000m)
.WithSale(500000m)
.WithSale(300000m)
.WithSale(100000m)
.WithSale(50000m)
.WithHireDate(DateTime.Now.AddYears(-5));

var salaryCalc = new SalaryCalculator();
var percentRaise = salaryCalc.CalculateSalaryRaisePercent(emp);

Assert.That(percentRaise, Is.EqualTo(15.Percent));

}

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