SmarTest is a testing module for accelerating the detection of faults in Drupal. Check SmarTest's web site
The SmarTest module is installed and enabled in a Drupal product and it can be checked following the instructions below:
1) Go to the Drupal site: Drupal site
1.1) Introduce credential: demo/demo123.
2) Navigate to Configuration -> Development -> SmarTest.
2.1) Check the Dashboard!
2.2) Check the Test Case Prioritization!