尝试使用Web自动化测试框架WatiN进行TDD

发布: 2009-4-24 07:59 | 作者: 网络转载 | 来源: 测试时代采编 | 查看: 256次 | 进入软件测试论坛讨论

再次运行测试，看见绿条，测试通过。不过这里只是一个假实现并没有真正实现查找功能，我们需要对测试进行修改使之更加完善。

IE ie = new IE("http://localhost:1781/Default.aspx");

ie.TextField(Find.ById("tb_customerID")).TypeText("ALFKI");
ie.Button(Find.ById("btn_find_customer")).Click();

Assert.That(ie.ContainsText("ALFKI"), Is.True);
Assert.That(ie.ContainsText("Alfreds Futterkiste"), Is.True);

ie.TextField(Find.ById("tb_customerID")).TypeText("AROUT");
ie.Button(Find.ById("btn_find_customer")).Click();

Assert.That(ie.ContainsText("AROUT"), Is.True);
Assert.That(ie.ContainsText("Around the Horn"), Is.True);

ie.Close();

运行测试，又会出现红条了，测试失败。现在要考虑实现一个真正的在数据库中的查找功能，怎么开始做呢？当然还是由测试开始，有了上面的基础，现在写的测试跨库可以稍微大点：

[TestFixture]
public class CustomerDAOTests
{
     [Test]
     public void ShouldFoundCustomerByID()
     {
         string id = "ALFKI";
         string comName = "Alfreds Futterkiste";

         CustomerDAO customerDAO = new CustomerDAO();
         Customer found = customerDAO.FindCustomerByID(id);

         Assert.That(found, Is.Not.Null);
         Assert.That(found.CustomerID, Is.EqualTo(id));
         Assert.That(found.CompanyName, Is.EqualTo(comName));

         id = "AROUT";
         comName = "Around the Horn";
         found = customerDAO.FindCustomerByID(id);

         Assert.That(found, Is.Not.Null);
         Assert.That(found.CustomerID, Is.EqualTo(id));
         Assert.That(found.CompanyName, Is.EqualTo(comName));
     }
}

这段代码不能编译，因为并没有CustomerDAO这个类，所以得新增该类以及FindCustomerByID方法，而且上面的测试中已经包括了两个测试场景，现在可以直接写实现：

public class CustomerDAO
{
     public Customer FindCustomerByID(string id)
     {
         using (NorthwindDataContext ctx = new NorthwindDataContext())
         {
             IQueryable<Customer> customers = ctx.Customers.Where(c => c.CustomerID == id);
             if (customers.Count() > 0)
                 return customers.Single();
             else
                 return null;
         }
     }

}