Ability to highlight unused step definitions in Step.cs files

[PaulInglis]

SpecFlow Version:

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

Used Test Runner

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

Version number: xUnit.net VSTest Adapter v2.4.1 (64-bit .NET Core 4.6.27817.03)

Project Format of the SpecFlow project

• [ ] Classic project format using packages.config
• [x] 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

• [x] Enabled
• [ ] Disabled

Are the latest Visual Studio updates installed?

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

.NET Framework:

• [ ] >= .NET 4.5
• [ ] before .NET 4.5
• [ ] .NET Core 2.0
• [ ] .NET Core 2.1
• [x] .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

Issue Description

Our project is getting large and it would be good to be able to detect which steps are no longer used by a line in a .feature file. I read that you can use the Specflow Reporting feature, but that doesn't exist in v3, which is what I'm using. I see it working in the same way Visual Studio highlights unused methods or variables.

[ozslab]

Although this is not the same solution, it might be useful to know about that SpecFlow+ LivingDoc now supports displaying unused step definitions.

You need to install or update to the latest SpecFlow.Plus.LivingDoc.CLI NuGet package (as of writing: 3.5.186).

Further read:

• How to install the CLI tool: https://docs.specflow.org/projects/specflow-livingdoc/en/latest/LivingDocGenerator/Installing-the-command-line-tool.html
• Unused step definitions: https://docs.specflow.org/projects/specflow-livingdoc/en/latest/LivingDocGenerator/Unused-step-definition-report.html