The SpecFlow+ Runner is out of maintenance. Read more about it here.

Setting Up the SpecFlow+ Server

The SpecFlow+ Runner server collects execution statistics for your tests at a central location. You can use this data to improve the efficiency of your test execution by using the adaptive test scheduling option. When using this option, tests are executed in an order based on the previous execution results, i.e. failing tests are executed first, and stable tests are executed last.


Before you can set up the server, you need to install the SpecFlow+ Runner NuGet packages that contain the server components. Information on installing the NuGet packages can be found here.

Note: SpecFlow+ Server is no longer included in SpecRun Nuget Packages 3.2 and above, and not supported on .NET Core.

Installing the Server

To install the SpecFlow+ Runner server:

  1. Create a new SQL database instance used to store the execution statistics.
  2. Locate the “server” directory in your solution’s \packages\SpecRun.Runner.x.y.z\tools directory (created when you install the NuGet package). Copy the contents of the “server” directory to your server.
  3. Enter your database connection string in the <Connection Strings> element of the SpecRun.Server.exe.config file. Note: The name of the connection is hard-coded, and must be either ReadModel or Database.
  4. Initialise the database using SpecRun.Server.exe initdatabase from the command line.
  5. Start the service using SpecRun.Server.exe start from the command line. Note: You may need to start the service as a user with elevated privileges, e.g. start the command line as administrator.
  6. The connection to the server takes place via port 6365; ensure that your firewall on the server allows connections via this port.
  7. Enter the server’s URL in the .srprofile file in your Visual Studio project (<Server ServerURL =”http://MyServer:6365” publishResults=”true”>).
  8. Rebuild your solution and run your tests. You can verify that you have set up everything correctly by checking if records have been added to the database on the server.

Adaptive Test Execution Order

You can use these statistics to execute failing and new tests first. To do so, set the testSchedulingMode attribute in the <Execution> element of your .srprofile file to Adaptive. SpecRun then uses the statistics in the pass/fail history to determine which tests to run first. Previously failing tests and new tests are executed before successful and stable tests.