C# 如何并行运行SpecFlow测试

C# 如何并行运行SpecFlow测试,c#,unit-testing,.net-core,mstest,specflow,C#,Unit Testing,.net Core,Mstest,Specflow,我尝试使用NUnit测试运行程序并行运行SpecFlow测试。我正在使用: C#/.Net核心3.1 NUnit作为testrunner Specflow 我在一个文件的顶部添加了这一行(如下所述:): 测试开始并行执行,但立即抛出错误: Message: System.ArgumentException : An item with the same key has already been added. Key: NUnitTestProject1.SpecFlowFeatur

我尝试使用NUnit测试运行程序并行运行SpecFlow测试。我正在使用:

  • C#/.Net核心3.1
  • NUnit作为testrunner
  • Specflow
我在一个文件的顶部添加了这一行(如下所述:):

测试开始并行执行,但立即抛出错误:

Message: 
    System.ArgumentException : An item with the same key has already been added. Key: NUnitTestProject1.SpecFlowFeature1Steps
Stack Trace: 
    Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
    Dictionary`2.Add(TKey key, TValue value)
    TypeRegistration.Resolve(ObjectContainer container, RegistrationKey keyToResolve, ResolutionList resolutionPath)
    ObjectContainer.ResolveObject(RegistrationKey keyToResolve, ResolutionList resolutionPath)
    ObjectContainer.Resolve(Type typeToResolve, ResolutionList resolutionPath, String name)
    ObjectContainer.Resolve(Type typeToResolve, String name)
    TestObjectResolver.ResolveBindingInstance(Type bindingType, IObjectContainer container)
    lambda_method(Closure , IContextManager , Int32 )
    BindingInvoker.InvokeBinding(IBinding binding, IContextManager contextManager, Object[] arguments, ITestTracer testTracer, TimeSpan& duration)
    TestExecutionEngine.ExecuteStepMatch(BindingMatch match, Object[] arguments)
    TestExecutionEngine.ExecuteStep(IContextManager contextManager, StepInstance stepInstance)
    TestExecutionEngine.OnAfterLastStep()
    TestRunner.CollectScenarioErrors()
    SpecFlowFeature1Feature.ScenarioCleanup()
    SpecFlowFeature1Feature.AddTwoNumbers() line 8
我尝试不使用SpecFlow(仅使用原始NUnit),但效果很好。我也尝试了MSTest测试运行程序,但得到了相同的异常

我制作了一个非常小的示例项目,您可以在这里复制:

任何帮助都将不胜感激。:)

编辑:步骤的完整代码

using NUnit.Framework;
using System;
using System.Threading;
using TechTalk.SpecFlow;

[assembly: Parallelizable(ParallelScope.All)]

namespace NUnitTestProject1
{
    [Binding]
    public class SpecFlowFeature1Steps
    {
        [Given(@"test(.*)")]
        public void GivenTest(int p0)
        {
            Thread.Sleep(5000);
            Assert.IsTrue(true);
        }
    }
}
我用这个:

[assembly: Parallelizable(ParallelScope.Fixtures)]

那不是我想要的。我想并行运行所有测试。ParallelScope.Fixtures仅根据功能(类)并行运行测试。我想按照场景(方法)运行它们。您只能在这种并行模式下运行SpecFlow测试。一个功能中的场景将逐个执行。至于来自一个类的非specFlow测试:是的,它们可以并行运行。有官方的来源吗?我什么也找不到。为什么会这样?MSTest也是这样吗?检查这里:现在已经写了在方法级别执行不起作用。请在SpecFlowFeature1Steps中发布代码。这个答案()可以帮助您
[assembly: Parallelizable(ParallelScope.Fixtures)]