Controller加入單元測試

Jun 4, 2014

3 mins read

Unit Test
Unit test

前言

前面介紹過Repository Pattern用來隔離資料庫，和Autoface注入介面，接下來可以在Controller中寫一些測試項目來驗證流程正確與否

首先加入一個測試專案，名稱為要測試的專案名稱後面加.Tests

加入一個測試專案

依照MVC的習慣，加入一個Controllers資料夾

在資料夾下新增一個單元測試檔案，名稱為要測試的控制器名稱後面加Test 加入一個Controllers資料夾

首先初始化一些要共用的變數

private Mock<IGuestbookRepository> repository;
private GuestbookController ctrl;

[TestInitialize]
public void GuestbookControllerTestInitialize()
{
    this.repository = new Mock<IGuestbookRepository>();
    this.repository
        .Setup(x => x.Find(It.IsIn<int>(1)))
        .Returns(new Guestbook());
    this.ctrl = new GuestbookController(this.repository.Object);
}

Index相關測試

[TestMethod]
public void Index_GET_Return_ViewResult()
{
    var view = this.ctrl.Index() as ViewResult;
    Assert.IsNotNull(view);
}

Create相關測試

[TestMethod]
public void Create_GET_Return_ViewResult()
{
    var view = this.ctrl.Create() as ViewResult;
    Assert.IsNotNull(view);
}

[TestMethod]
public void Create_POST_Success_Return_RedirectToRouteResult()
{
    var model = new Guestbook();
    var view = this.ctrl.Create(model) as RedirectToRouteResult;
    Assert.IsNotNull(view);
}

[TestMethod]
public void Create_POST_Fail_Return_ViewResult()
{
    var model = new Guestbook();
    this.ctrl.ModelState.AddModelError("key", "message");
    var view = this.ctrl.Create(model) as ViewResult;
    Assert.IsNotNull(view);
}

Edit相關測試

[TestMethod]
public void Edit_GET_Null_ID_Return_HttpStatusCodeResult()
{
    int? id = null;
    var view = this.ctrl.Edit(id) as HttpStatusCodeResult;
    Assert.IsNotNull(view);
}

[TestMethod]
public void Edit_GET_Invalid_ID_Return_HttpNotFoundResult()
{
    int id = 0;
    var view = this.ctrl.Edit(id) as HttpNotFoundResult;
    Assert.IsNotNull(view);
}

[TestMethod]
public void Edit_GET_Valid_ID_Return_ViewResult()
{
    int id = 1;
    var view = this.ctrl.Edit(id) as ViewResult;
    Assert.IsNotNull(view);
}

[TestMethod]
public void Edit_POST_Success_Return_RedirectToRouteResult()
{
    var model = new Guestbook();
    var view = this.ctrl.Edit(model) as RedirectToRouteResult;
    Assert.IsNotNull(view);
}

[TestMethod]
public void Edit_POST_Fail_Return_ViewResult()
{
    var model = new Guestbook();
    this.ctrl.ModelState.AddModelError("key", "message");
    var view = this.ctrl.Edit(model) as ViewResult;
    Assert.IsNotNull(view);
}

Delete相關測試

[TestMethod]
public void Delete_GET_Null_ID_Return_HttpStatusCodeResult()
{
    int? id = null;
    var view = this.ctrl.Delete(id) as HttpStatusCodeResult;
    Assert.IsNotNull(view);
}

[TestMethod]
public void Delete_GET_Invalid_ID_Return_HttpNotFound()
{
    int? id = 0;
    var view = this.ctrl.Delete(id) as HttpNotFoundResult;
    Assert.IsNotNull(view);
}

[TestMethod]
public void Delete_GET_Valid_ID_Return_ViewResult()
{
    int? id = 1;
    var view = this.ctrl.Delete(id) as ViewResult;
    Assert.IsNotNull(view);
}

[TestMethod]
public void Delete_POST_Return_RedirectToRouteResult()
{
    int id = 1;
    var view = this.ctrl.DeleteConfirmed(id) as RedirectToRouteResult;
    Assert.IsNotNull(view);
}

單元測試涵蓋率可以參考NCover、NCrunch等工具

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