使用Ninject MockingKernel Moq如何爲同一接口注入多個模擬

Question

我希望測試的C＃類接受同一接口的IEnumerable實例。我使用Ninject進行依賴注入。我怎麼會注入使用Ninject MockingKernel起訂量

public class Foo: IFoo 
{ 
    private readonly Dictionary<ContextType, IBar> _bars; 
    public Foo(IEnumerable<IBar> bars) 
    { 
     _bars= bars.ToDictionary(x => x.ContextType); 
    } 
} 
public interface IBar 
{ 
    ContextType ContextType { get; } 
    void DoStuff(); 
} 
public enum ContextType 
{ 
    Local, 
    Site, 
    Test 
} 

嘲笑到了IEnumerable這是我的正常結合的模樣

//assume _kernel is StandardKernel 
_kernel.Bind<IFoo>().To<MyFoo>(); 
_kernel.Bind<IBar>().To<Bar1>(); //ContextType.Site 
_kernel.Bind<IBar>().To<Bar2>(); //ContextType.Local 
_kernel.Bind<IBar>().To<Bar3>(); //ContextType.Test 

設置如下圖所示嘲笑如何注入只剩下最後模擬成富（如應該注射3次）

//using _kernel = new MoqMockingKernel() 
_kernel.Bind<IFoo>().To<MyFoo>(); 
var bar1Mock = _kernel.GetMock<IBar>();barMock1.Setup(m=>m.ContextType).Returns(ContextType.Site); 
var bar2Mock = _kernel.GetMock<IBar>();barMock2.Setup(m=>m.ContextType).Returns(ContextType.Local); 
var bar3Mock = _kernel.GetMock<IBar>();barMock3.Setup(m=>m.ContextType).Returns(ContextType.Test); 

_foo = _kernel.Get<IFoo>(); 

任何幫助表示讚賞。謝謝

Answer 1

爲什麼不只是手動實例化Foo，如果你是單元測試它？

var bar1Mock = _kernel.GetMock<IBar(); 
barMock1.Setup(m=>m.ContextType).Returns(ContextType.Site); 
var bar2Mock = _kernel.GetMock<IBar>(); 
barMock2.Setup(m=>m.ContextType).Returns(ContextType.Local); 
var bar3Mock = _kernel.GetMock<IBar>(); 
barMock3.Setup(m=>m.ContextType).Returns(ContextType.Test); 

// simply create new instance, what is a point o 
var target = new Foo(new[]{barMock1.Object, bar2Mock.Object, bar3Mock.Object }); 

但是，如果你理解你的權利，你想要IEnumerable<IBar> bars由Ninject？ 然後，你需要使用Ninject綁定實際徵收：

var allBars = new []{new Bar1(), new Bar2(), new Bar3()}; 
kernel.Bind<IEnumerable<IBar>>().ToConstant(allBars); 

或者，嘗試實際上陣列的IBar代替IEnumerable<IBar>，並留下您的綁定，就是：

_kernel.Bind<IFoo>().To<MyFoo>(); 
_kernel.Bind<IBar>().To<Bar1>(); //ContextType.Site 
_kernel.Bind<IBar>().To<Bar2>(); //ContextType.Local 
_kernel.Bind<IBar>().To<Bar3>(); 

public class Foo: IFoo 
{ 
    private readonly Dictionary<ContextType, IBar> _bars; 
    public Foo(IBar[] bars) 
    { 
     _bars= bars.ToDictionary(x => x.ContextType); 
    } 
} 

根據manual，這應該工作。

更新：綁定到實際模擬的情況下，後決心的IFoo像往常一樣：

var bar1Mock = _kernel.GetMock<IBar(); 
barMock1.Setup(m=>m.ContextType).Returns(ContextType.Site); 
var bar2Mock = _kernel.GetMock<IBar>(); 
barMock2.Setup(m=>m.ContextType).Returns(ContextType.Local); 
var bar3Mock = _kernel.GetMock<IBar>(); 
barMock3.Setup(m=>m.ContextType).Returns(ContextType.Test); 

_kernel.Bind<IBar>().ToConstant(bar1Mock.Object); 
_kernel.Bind<IBar>().ToConstant(bar2Mock.Object); 
_kernel.Bind<IBar>().ToConstant(bar3Mock.Object); 

foo = _kernel.Get<IFoo>(); 

UPDATE2：嘗試這種方式

_kernel.Bind<IBar>().ToMethod(x => bar1Mock.Object); 
_kernel.Bind<IBar>().ToMethod(x => bar2Mock.Object); 
_kernel.Bind<IBar>().ToMethod(x => bar3Mock.Object); 

Answer 2

我有這個工作了。 _kernel需要在請求另一個獨特的同一接口模擬之前被重置。下面這段代碼工作

var bar1Mock = _kernel.GetMock<IBar();barMock1.Setup(m=>m.ContextType).Returns(ContextType.Site); 
_kernel.Reset(); 

var bar2Mock = _kernel.GetMock<IBar>();barMock2.Setup(m=>m.ContextType).Returns(ContextType.Local); 
_kernel.Reset(); 

var bar3Mock = _kernel.GetMock<IBar>(); barMock3.Setup(m=>m.ContextType).Returns(ContextType.Test); 
_kernel.Reset(); 

_kernel.Bind<IBar>().ToConstant(bar1Mock.Object); 
_kernel.Bind<IBar>().ToConstant(bar2Mock.Object); 
_kernel.Bind<IBar>().ToConstant(bar3Mock.Object); 

感謝

Answer 3

運行到同樣的問題。上面的答案沒有幫助。 下面是一個解決方案，但它不是理想的。

使用kernel.Reset（）;似乎不正確。

類似的代碼

var bar1Mock = _kernel.GetMock<IBar() 
barMock1.Setup(m=>m.ContextType).Returns(ContextType.Site); 
var bar2Mock = _kernel.GetMock<IBar>(); 
barMock2.Setup(m=>m.ContextType).Returns(ContextType.Local); 
var bar3Mock = _kernel.GetMock<IBar>(); 
barMock3.Setup(m=>m.ContextType).Returns(ContextType.Test); 

_kernel.Bind<IBar>().ToMethod(x => bar1Mock.Object); 
_kernel.Bind<IBar>().ToMethod(x => bar2Mock.Object); 
_kernel.Bind<IBar>().ToMethod(x => bar3Mock.Object); 

foo = _kernel.Get<IFoo>(); 

仍然返回鏈接到同一個（最後一個）模擬。也許我錯過了什麼？

我想用嘲諷的內核，但到目前爲止，我得到了最好的是：

var barMock1 = new Moq.Mock<IBar>(); 
barMock1.Setup(m=>m.ContextType).Returns(ContextType.Site); 

var barMock2 = new Moq.Mock<IBar>(); 
barMock2.Setup(m=>m.ContextType).Returns(ContextType.Local); 

var bar1Mock3 = new Moq.Mock<IBar>(); 
barMock3.Setup(m=>m.ContextType).Returns(ContextType.Test); 

_kernel.Bind<IBar>().ToMethod(s => barMock1.Object); 
_kernel.Bind<IBar>().ToMethod(s => barMock2.Object); 
_kernel.Bind<IBar>().ToMethod(s => barMock3.Object); 

這應該或多或少簡單的對象，但如果在伊巴爾依賴我們必須解決手動和使用ninject這是可取的。那麼更好的想法是如何獲得不同的對象嘲諷或某種方式來設置'範圍'？