title: Visual Studio 2015 can't run unit test
body: <p>Since I installed VS2015, I can't run unit tests on neither VS2013 nor VS2015</p>
  
  <p>Below is the error:</p>
  
  <p>
  Model compatibility cannot be checked because the database does not contain model metadata. Ensure that IncludeMetadataConvention has been added to the DbModelBuilder conventions.
  </p>
  
  <p>Anybody experiencing the same problem?</p>