For information on running BDD test cases from JIRA within Jenkins, please see Jenkins.
Writing BDD (Behaviour Driven Development) test cases is simple and easy to do. TM4J allows the user to create BDD test cases in JIRA as well as export the test case to a feature file. This feature file can then be used as a reference for writing unit tests that will be needed for it to run.
BDD test cases are written in Gherkin syntax. Below a run down of supported and not supported keywords.
Open the desired Test Case and then click on Test Script.