Issue with injecting ScenarioContext into Before Hooks with multithreading (MsTest)

[Oliver-S-Zheng]

SpecFlow Version:

• 3.0
• 2.4
• 2.3
• 2.2
• 2.1
• 2.0
• 1.9

Used Test Runner

• SpecFlow+Runner
• MSTest
• NUnit
• Xunit

Version number: 2.4.0

Project Format of the SpecFlow project

• Classic project format using packages.config
• Classic project format using <PackageReference> tags
• Sdk-style project format

.feature.cs files are generated using

• SpecFlow.Tools.MsBuild.Generation NuGet package
• SpecFlowSingleFileGenerator custom tool

Visual Studio Version

• VS 2019
• VS 2017
• VS 2015

Enable SpecFlowSingleFileGenerator Custom Tool option in Visual Studio extension settings

• Enabled
• Disabled

Are the latest Visual Studio updates installed?

• Yes
• No, I use Visual Studio version 15.7.6

.NET Framework:

• >= .NET 4.5
• before .NET 4.5
• .NET Core 2.0
• .NET Core 2.1
• .NET Core 2.2
• .NET Core 3.0

Test Execution Method:

• Visual Studio Test Explorer
• TFS/VSTS/Azure DevOps – Task – PLEASE SPECIFY THE NAME OF THE TASK
• Command line – PLEASE SPECIFY THE FULL COMMAND LINE

<SpecFlow> Section in app.config or content of specflow.json

  <specFlow>
    <stepAssemblies>
      <stepAssembly assembly="[Assembly Filler]" />
    </stepAssemblies>
    <unitTestProvider name="MsTest" />
  </specFlow>

Repro Project

Issue Description

I'm running two different Testcases in parallel with mstest and I'm trying to inject the ScenarioContext into the BeforeScenario, but more often than not the ScenarioContext for one scenario has the ScenarioInfo of another Scenario. For example, when I have 2 scenarios, one called "Test1" and one called "Test2", when I check the ScenarioInfo, in the thread running "Test2", the Title value would be "Test1"

I'm injecting into the constructor with:
public TestCommon(TestcaseContext tc, ScenarioContext sc, FeatureContext fc)
{
this.tcContext = tc;
this.scenarioContext = sc;
}

Steps to Reproduce

1. Place debug point in constructor that has ScenarioContext injected for object containing BeforeScenario.
2. Run testcase in debug mode and check the ScenarioContext's ScenarioInfo

Sometimes the first thread to hit this point has the right scenario info, but the next thread always fails with 'An item with the same key has already been added.' before hitting that breakpoint

[SabotageAndi]

How did you configured the parallel execution in MSTesT?

[Oliver-S-Zheng]

Added " parallelTestCount" in testsettings file

[Oliver-S-Zheng]

Any update on this? Do you need more information?

[SabotageAndi]

No.