How to share the same step definition across projects within same solution in SpecFlow

Question

• SpecFlow Version: [ x ] 2.2.1
• Used Test Runner [ x ]MSTest
• Visual Studio Version [ x ]VS 2017
• Are the latest Visual Studio updates installed? [ x ]Yes
• .NET Framework: [ x ] .NetCore 2.0

• Test Execution Method: [ x ]Visual Studio Test Explorer

  Section in app.config

Repro Project

I have a solution with multiple test projects under that as below

• InfoModelApiTests
• WarmDataTests

Issue Description

I want to use the same step as used in the "InfoModelApiTests" project feature file inside the "WarmDataTests" project's feature file. I don't want to repeat the step definition code. I have included the project reference of "InfoModelApiTests" in the "WarmDataTests" project. And added stepAssemblies reference in the app.config. But I am unable to get the step definition turning into black implying it's been binded.

The step definition class will look as below public sealed class InfoModelApiTestsSteps

Steps to Reproduce

• Add the project reference of "InfoModelApiTests" in the "WarmDataTests" project
• Then in the app.config in "WarmDataTests" project add the StepAssemblies as mentioned above
• Copy the same step from the "InfoModelApiTests" feature file to "WarmDataTests" feature file. It should get binded to the existing step definition.

Answer 1

Answer from https://github.com/techtalk/SpecFlow/issues/1194#issuecomment-402934038

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You did it right.
The VS Extension has some problems with additional step assemblies and so the highlighting doesn't work correctly.
But when you execute the tests, it is working.