从代码运行 SpecFlow 场景

Question

I am trying to run a SpecFlow scenario from code instead of through Test Explorer or the command line. Has someone managed to do this?

From a scenario, I can extract the method name and test method with recursion, but I cannot run this scenario method. It seems to need a proper initialize and teardown, but I could't manage to do this.

My first thought was to use the TechTalk.SpecFlow.TestRunner class, but it doesn't seem to have a scenario selection method.

EDIT on why I want to do this:
We want to run specific scenarios from TFS. It is very cumbersome to connect TestMethods to WorkItems in TFS, because:

• You can only assign one testmethod to one workitem
• For each workitem you have to search the method name, with in itself is a hassle, because the list is very long with lots of specflow scenarios.
• When your specflow scenario gets a different name (which happens a lot), TFS cannot find the correct method anymore
• Specflow Scenario Outlines get practically unusable, while they are a very powerful feature.

I want to create a mechanism where each automated workitem gets the same method assigned. This method extracts the workitem id and search and executes the scenario(s) with this workitem tagged.

Answer 1

I had a similar problem since my tests have some dependencies between Scenarios (shame on me, but it saves tons of copy-paste lines per Feature file). In most cases I would stick to isolated Scenarios of course.

I used reflection

1. Find all Types with a DescriptionAttribute (aka Features)
2. Find their MethodInfos with a TestAttribute and DescriptionAttribute (aka Scenarios)
3. Store them to a Dictionary
4. Call them by "Title of the Feature/Title of the Scenario" with Activator.CreateInstance and Invoke

You have to set the (private) field "testRunner" according to your needs of course.