Question

我声明了以下类和构造函数：

 public class StoryProvider : ReportProviderBase<StoryProvider>, IStoryProvider
{
    public StoryProvider(ICommonComponents<StoryProvider> common)
        : base(common)
    {
        Common.Logger.LogTrace("Instantiating StoryProvider");
    }

    public StoryProvider(ICommonComponents<StoryProvider> common, IEvalReports reports)
        : base(common)
    {
        Reports = reports;
        Common.Logger.LogTrace("Instantiating StoryProvider");
    }……

基类具有以下声明：

 public abstract class ReportProviderBase<T> : IDisposable
    where T : class
{
    public IEvalReports Reports { get; set; }

    protected ICommonComponents<T> Common { get; }

    protected ReportProviderBase(ICommonComponents<T> common)
    {
        Common = common;
        CreateProfileServerComInstance();
    }…..

使用N代替我声明：

 ICommonComponents<StoryProvider> common = GetCommonComponents<StoryProvider>();
 var reports = Substitute.For<IEvalReports>();

现在，如果我使用以下方法调用我的测试方法：

var provider = await Substitute.For<StoryProvider>(common).HeadlineNewsContentAsync(request);

它在HeadlineNewsContentAsync中失败，因为尚未实例化报告。

我真的很想使用重载的构造函数来调用它：

var provider = await Substitute.For<StoryProvider>(common, reports).HeadlineNewsContentAsync(request);

这时，它崩溃了，没有找到TestInvoker.cs。显然，我以错误的方式附加了reports，我该如何更改对此方法的调用，以便它将使用重载的构造函数

这是被测函数：

public HeadlineStoriesResponse HeadlineNewsContent(FrontPageContentRequest request)
    {
        EnsureConnectedToProfileServer(request.SessionId);

        var requestXml = request.XSerialise();
        var success = Reports.FrontPageOperation(requestXml, out var responseXml);
        if (!success || string.IsNullOrEmpty(responseXml) || responseXml.Contains("<FRONTPAGE_CONTENT/>"))
            return new HeadlineStoriesResponse { IsSuccess = false };

        var xml = responseXml.GetNodeFromXmlString("FRONTPAGE_CONTENT//HEADLINE_STORIES");
        var stories = xml.XDeserialise<HeadlineStoriesResponse>();
        stories.IsSuccess = true;

        return stories;
    }

Answer 1

通常，在测试时不会嘲笑被测对象。

创建被测对象的实例并注入模拟的依赖项。

//Arrange

//...

ICommonComponents<StoryProvider> common = GetCommonComponents<StoryProvider>();
var reports = Substitute.For<IEvalReports>();

var provider = new StoryProvider(common, reports);

//Act 
var actual = await provider.HeadlineNewsContentAsync(request);

//Assert
//...

当我尝试存根一个重载的构造函数时，NSubstitute崩溃

1 个答案: