C# Unittest project Azure函数无法加载文件或程序集'；Newtonsoft.Json'；

如前所述，我为一个函数应用程序创建了一个测试项目。我编写的Http触发Azure函数使用依赖项注入（），如下所示：

[DependencyInjectionConfig(typeof(DependencyConfig))]
public static class CreateDeclarationsFunction
{
    [FunctionName("CreateDeclarationsFunction")]
    public static HttpResponseMessage Run(
        [HttpTrigger(AuthorizationLevel.Function, "post", Route = "CreateDeclarations")]HttpRequestMessage req,
        TraceWriter log,
        [Inject]IDeclarationDataService declarationDataService,
        [Inject]IClientDataService clientDataService)
    {
        log.Info("Http triggered function: CreateDeclarationsFunction  processed a request.");

        try
        {
            var clients = clientDataService.GetAll().ToList();

            foreach (var client in clients)
            {
                // Create and save new declaration for each client
                declarationDataService.CreateAndSaveNew(client.Id);
            }
        }
        catch (Exception ex)
        {
            return req.CreateErrorResponse(HttpStatusCode.InternalServerError, ex);
        }

        return req.CreateResponse(HttpStatusCode.OK);
    }
}

以及unittest类（含Moq、Shouldly和NBuilder）：

functionPP

有两个嵌套引用到

Newtonsoft.Json（9.0.1）

，但没有一个嵌套引用到版本

6.0.0

依赖项

Nuget

Microsoft.NET``.Sdk.Functions（1.0.6）

Newtonsoft.Json（9.0.1）

Dependencies

Nuget

AzureFunctions.Autofac（2.0.0）

Microsoft.Azure.Webjobs（2.1.0-beta4）

Newtonsoft.Json（9.0.1）

测试项目引用了

FunctionApp

项目。该异常仅在单元测试时显示，而在其运行（以及从浏览器调用）时不显示。 有人能解决上面的异常吗？谢谢

更新

我发现返回

req.CreateErrorResponse（HttpStatusCode.InternalServerError，ex）时发生
System.IO.FileLoadException

返回
req.CreateResponse（HttpStatusCode.OK）时相反，它没有给出所提到的异常
 我认为，由于我设置测试项目的方式（最初是
.NET standard
，然后手动将目标框架转换为
.NET framework 4.6.1
），测试项目中不会生成
app.config
文件。此外，我认为这样的测试项目设置在更新部分解决方案中的nuget包版本时不会自动为nuget包生成绑定重定向

Result StackTrace:  
at System.Net.Http.Formatting.BaseJsonMediaTypeFormatter..ctor()
   at System.Net.Http.Formatting.JsonMediaTypeFormatter..ctor()
   at System.Net.Http.Formatting.MediaTypeFormatterCollection.CreateDefaultFormatters()
   at System.Web.Http.HttpConfiguration.DefaultFormatters(HttpConfiguration config)
   at System.Web.Http.HttpConfiguration..ctor(HttpRouteCollection routes)
   at System.Net.Http.HttpRequestMessageExtensions.CreateErrorResponse(HttpRequestMessage request, HttpStatusCode statusCode, Func`2 errorCreator)
   at System.Net.Http.HttpRequestMessageExtensions.CreateErrorResponse(HttpRequestMessage request, HttpStatusCode statusCode, Exception exception)
   at FunctionApp.CreateDeclarationsFunction.Run(HttpRequestMessage req, TraceWriter log, IDeclarationDataService declarationDataService, IClientDataService clientDataService)
   at FunctionApp.Tests.CreateDeclarationsFunctionTest.CreateDeclarations_ReturnsOk() in C:\TFS\...\FunctionApp.Tests\CreateDeclarationsFunctionTest.cs:line 63
Result Message: 
Test method FunctionApp.Tests.CreateDeclarationsFunctionTest.CreateDeclarations_ReturnsOk threw exception: 
System.IO.FileLoadException: Could not load file or assembly 'Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

如前所述，我必须手动向测试项目添加一个
app.config
文件，并为
Newtonsoft.Json
设置绑定重定向

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-9.0.0.0" newVersion="9.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>


您的测试项目中是否有一个app.config文件，其中包含Newtonsoft.Json的绑定重定向？可能存在一个正确的绑定重定向（类似于此：）help@FabioCavalcante事实上，这就是答案。非常感谢。
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-9.0.0.0" newVersion="9.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>