Batch run tests that possess a common tag
Tagged tests can be run in bulk in a few clicks. While in the "All Tests" tab of the Test module, open up the Search & Filters button, and navigate to your tags drop down.
Select the common tag of the tests you would like to run. This will populate your tests view with all tests containing this tag.
From there click on the top left box to select all tests in this view, or select the individual tests you would like to run. Once you have clicked a box, you will have a new toolbar that contains a run button. Click on this to start your run!