Question

I am trying to do this in a specflow step definition file, so that I can create an object of view model and make method calls to it.

But I get an error saying “Interface cannot be resolved: Microsoft.Practices.Prism.Regions.IRegionManager (resolution path: TestClass)”. What is that I am doing wrong?

public class TestClass
{
    private IRegionManager _RegionManager;

    [ImportingConstructor]
    public TestClass(IRegionManger regionManager)
    {
        this._RegionManager = regionManager;
        // stuff here
    }
}

Answer 1

Are you expecting your test class to be instantiated by SpecFlow or via Prism? As both have dependency injection functionality.

So I wouldn’t expect your test definition file to have any importing constructors or similar MEF attributes. Instead I would expect your test class to written more like

[Binding]
public class TestClass
{
  [Given("I setup Prism")]
  public void GivenISetupPrism()
  {
    // Call into prism
  }
}

See the documentation on http://specflow.org for more details.