SkillTree TDD Homework - Day1

GroupPagingServiceTests.cs

[TestClass]
public class GroupPagingServiceTests
{
  [TestMethod]
  public void GroupPagingServiceTest_驗證以3筆資料為一組時的Cost總和()
  {
    // 1. arrange
    var pageSize = 3;
    var fieldToSum = "Cost";
    // 用假資料的資料來源注入
    IProductRepository productRepositoryStub = new ProductRepositoryStub();
    var target = new GroupPagingService(productRepositoryStub);
    var expected = new [] {6, 15, 24, 21};
    
    // 2. act
    var actual = target.GetFieldSumOfPaging(pageSize, fieldToSum);
    
    // 3. assert
    CollectionAssert.AreEqual(expected, actual);
  }
  
  [TestMethod]
  public void GroupPagingServiceTest_驗證以4筆資料為一組時的Revenue總和()
  {
    // 1. arrange
    var pageSize = 4;
    var fieldToSum = "Revenue";
    // 用假資料的資料來源注入
    IProductRepository productRepositoryStub = new ProductRepositoryStub();
    var target = new GroupPagingService(productRepositoryStub);
    var expected = new [] {50, 66, 60};
    
    // 2. act
    var actual = target.GetFieldSumOfPaging(pageSize, fieldToSum);
    
    // 3. assert
    CollectionAssert.AreEqual(expected, actual);
  }
}

寫得很好，又快又準！