Built tests are not added to the Visual Studio Test Explorer window

Question

1. I set up the SpecFlow plug-in for the Visual Studio 2013.
2. I created new Feature Item and build it.

Result: built test is not shown in the Test

Answer 1

In my case the reason why tests weren't discovered were because I was using Resharper build.
As soon as I went to: Resharper -> Options -> Tools -> Build -> General: "Use ReSharper Build"(untick), then all tests were suddenly discovered.