如何单元测试GlassController行动没有SitecoreContext依赖注入

Question

我是Sitecore的开发人员，我想测试如下指数确切创建示例Sitecore的螺旋单元测试项目（）我们的“HomeBottomContentController的操作方法“控制器，没有任何依赖注入到一个构造函数。请注意，注释掉的代码正是我不想做的。

public class HomeBottomContentController : GlassController 
{ 
    // I want to test the EXACT method below 
    public override ActionResult Index() 
    { 
     var context = new SitecoreContext(); 
     var model = context.GetCurrentItem<Home_Control>(); 
     return View("~/Views/HomeBottomContent/HomeBottomContent.cshtml", model); 
    } 

    /* 
    // I do NOT want to have any of the below code for injecting ISitecoreContext into a constructor and testing the IndexTest() below it. 
    private readonly ISitecoreContext _iSitecoreContext; 
    public HomeBottomContentController(ISitecoreContext iSitecoreContext) 
    { 
     _iSitecoreContext = iSitecoreContext; 
    } 

    public HomeBottomContentController() 
    { } 

    public ActionResult IndexTest() 
    { 
     var model = _iSitecoreContext.GetCurrentItem<Home_Control>(); 
     return View("~/Views/HomeBottomContent/HomeBottomContent.cshtml", model); 
    } 
    */ 
} 

这就是我在单元测试课上所拥有的。再次，我已经注释掉正是我不想做的事：

[TestClass] 
public class MvcUnitTests 
{ 
    [TestMethod] 
    public void Test_HomeBottomContentController_With_ISitecoreContext() 
    { 
     /* 
     // I don't want to do below... 
     var model = new Home_Control() 
     { Bottom_Content = "XYZ" }; 

     var iSitecoreContext = new Mock<Glass.Mapper.Sc.ISitecoreContext>(); 
     iSitecoreContext.Setup(_ => _.GetCurrentItem<Home_Control>(false, false)).Returns(model); 

     HomeBottomContentController controllerUnderTest = new HomeBottomContentController(iSitecoreContext.Object); 

     var result = controllerUnderTest.IndexTest() as ViewResult; 
     */ 

     //I want to test using the exact constructor below and calling that exact Index() method. 
     HomeBottomContentController controllerUnderTest = new HomeBottomContentController(); 
     var result = controllerUnderTest.Index() as ViewResult; 
     Assert.IsNotNull(result); 
     Assert.IsNotNull(result.Model); 
     //Assert.AreEqual(((Home_Control)result.Model).Bottom_Content, "XYZ"); 
    } 
} 

我如何测试我控制器的确切Index（）方法，而无需添加代码，HomeBottomContentController类，使依赖注入转换为构造函数（如上面的注释代码）？我不想将代码添加到HomeBottomContentController（）。

@Aleksey Shevchenko如果我尝试你的解决方案，我该如何将模型连接到iSitecoreContext，然后将其分配给controllerUnderTest.FakeContext？我下面的代码引发编译错误（您不能从Glass.Mapper.Sc.ISitecoreContext的模拟转换成Glass.Mapper.Sc.ISitecoreContext，我们如何实现这一目标）：

var model = new Home_Control() 
{ Top_Content = "Some Dummy Test Home Top Content" }; 
var iSitecoreContext = new Mock<Glass.Mapper.Sc.ISitecoreContext>(); 
//var iSitecoreContext = new Glass.Mapper.Sc.SitecoreContext();  
iSitecoreContext.Setup(_ => _.GetCurrentItem<Home_Control>(false, false)).Returns(model); 
FakeHomeTopContentController controllerUnderTest = new FakeHomeTopContentController(); 
controllerUnderTest.FakeContext = (Glass.Mapper.Sc.SitecoreContext)iSitecoreContext; 

Answer 1

如果你不想通过构造函数创建依赖注入，你可以通过受保护的虚拟方法来实现。类似的东西：

public class HomeBottomContentController : GlassController 
{ 
    public override ActionResult Index() 
    { 
     var context = this.GetContext(); 
     var model = context.GetCurrentItem<Home_Control>(); 
     return View("~/Views/HomeBottomContent/HomeBottomContent.cshtml", model); 
    } 

    protected virtual SitecoreContext GetContext() 
    { 
     return new SitecoreContext(); 
    } 
} 

[TestClass] 
public class MvcUnitTests 
{ 
    [TestMethod] 
    public void Test_HomeBottomContentController_With_ISitecoreContext() 
    {  
     var controllerUnderTest = new FakeHomeBottomContentController(); 
     controllerUnderTest.FakeContext = /* set what you want */; 
     var result = controllerUnderTest.Index() as ViewResult; 
     Assert.IsNotNull(result); 
     Assert.IsNotNull(result.Model);   
    } 

    public class FakeHomeBottomContentController : HomeBottomContentController 
    { 
     public SitecoreContext FakeContext { get; set; } 

     protected override SitecoreContext GetContext() 
     { 
      return this.FakeContext; 
     } 
    } 
} 

Answer 2

我不知道你的结束源代码的能力限制，但基于对对方的回答您的评论您可以访问它。我会选择穷人的DI，在控制器上有两个构造函数。单元测试使用第二个构造函数，而MVC将使用无参数构造函数。

public class HomeBottomContentController : GlassController 
{ 

ISitecoreContext _iSitecoreContext; 

public HomeBottomContentController() :this(new SitecoreContext()){ 
} 


public HomeBottomContentController(ISitecoreContext iSitecoreContext) 
{ 
    _iSitecoreContext = iSitecoreContext; 
} 



public ActionResult IndexTest() 
{ 
    var model = _iSitecoreContext.GetCurrentItem<Home_Control>(); 
    return View("~/Views/HomeBottomContent/HomeBottomContent.cshtml", model); 
} 

} 

[TestClass] 
public class MvcUnitTests 
{ 
[TestMethod] 
public void Test_HomeBottomContentController_With_ISitecoreContext() 
{ 

    var model = new Home_Control() 
    { Bottom_Content = "XYZ" }; 

    var iSitecoreContext = new Mock<Glass.Mapper.Sc.ISitecoreContext>(); 
    iSitecoreContext.Setup(_ => _.GetCurrentItem<Home_Control>(false, false)).Returns(model); 

    HomeBottomContentController controllerUnderTest = new HomeBottomContentController(iSitecoreContext.Object); 

    var result = controllerUnderTest.IndexTest() as ViewResult; 

}