UI test fails with error: Exception has been thrown by the target of an invocation.

[jpc1963]

UI test fails with error: Exception has been thrown by the target of an invocation.

SpecFlow Version:

• [X] 3.0
• [ ] 2.4
• [ ] 2.3
• [ ] 2.2
• [ ] 2.1
• [ ] 2.0
• [ ] 1.9

Used Test Runner

• [ ] SpecFlow+Runner
• [ ] MSTest
• [X] NUnit
• [ ] Xunit

Version number: 3.1

Project Format of the SpecFlow project

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

.feature.cs files are generated using

• [X] SpecFlow.Tools.MsBuild.Generation NuGet package
• [ ] SpecFlowSingleFileGenerator custom tool

Visual Studio Version

• [X] 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?

• [X] Yes
• [ ] No, I use Visual Studio version <Major>.<Minor>.<Patch>

.NET Framework:

• [X] >= .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:

• [X] 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

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="BoDi" version="1.4.1" targetFramework="net452" />
  <package id="Gherkin" version="6.0.0" targetFramework="net452" />
  <package id="NUnit" version="3.12.0" targetFramework="net452" />
  <package id="NUnit.Console" version="3.10.0" targetFramework="net452" />
  <package id="NUnit.ConsoleRunner" version="3.10.0" targetFramework="net452" />
  <package id="NUnit.Extension.NUnitProjectLoader" version="3.6.0" targetFramework="net452" />
  <package id="NUnit.Extension.NUnitV2Driver" version="3.7.0" targetFramework="net452" />
  <package id="NUnit.Extension.NUnitV2ResultWriter" version="3.6.0" targetFramework="net452" />
  <package id="NUnit.Extension.TeamCityEventListener" version="1.0.6" targetFramework="net452" />
  <package id="NUnit.Extension.VSProjectLoader" version="3.8.0" targetFramework="net452" />
  <package id="SpecFlow" version="3.0.225" targetFramework="net452" />
  <package id="SpecFlow.NUnit" version="3.0.225" targetFramework="net452" />
  <package id="System.Reflection.Emit" version="4.3.0" targetFramework="net452" />
  <package id="System.Reflection.Emit.Lightweight" version="4.3.0" targetFramework="net452" />
  <package id="System.Runtime.CompilerServices.Unsafe" version="4.5.2" targetFramework="net452" />
  <package id="System.Threading.Tasks.Extensions" version="4.5.3" targetFramework="net452" />
  <package id="System.ValueTuple" version="4.5.0" targetFramework="net452" />
  <package id="Utf8Json" version="1.3.7" targetFramework="net452" />
  <package id="Xamarin.UITest" version="3.0.3" targetFramework="net452" />
</packages>

Repro Project

Issue Description

I develop UI tests for apps on iOS & Android devices & simulators. I write UI Tests using VS 2019 on a MAC and recently tried to update my nuget packages to the latest version: NUnit = 3.12 Xamarin.UITest = 3.03 Specflow = 3.0.225

On Visual studio for the MAC I have always used Straight8s Specflow Integration to edit my feature files. The latest version generates code for specflow 3 - hence the upgrading my nuget packages.

When I run a test I get the following error (which occurs when trying to start the app on a simulator): 1 - LaunchTestAsync: deviceId: bla.bla 1 - Launching simulator if not already running Test server version: 0.21.7 Error: Exception has been thrown by the target of an invocation.

See attachments for further error info. NOTE: I removed all Specflow elements from the project and turned it into a simple Nunit test. This runs OK on my simulators / emulators.

Xamarin.Test.Results.txt Simulator.Log.txt

Any ideas?

Steps to Reproduce

[SabotageAndi]

No ideas on my side. We don't maintain the SpecFlow VS Extension for VS for Mac/MonoDevelop/XamarinStudio and in the callstacks I don't see anything related to SpecFlow.

What I know is, that Xamarin UITest has some ugly hacks for SpecFlow support that is version dependent. Perhaps they didn't update it yet for SpecFlow 3.

[jpc1963]

OK thanks I'll follow it up with Xamarin.

[SabotageAndi]

Closed because of inactivity

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