Data is received that characterizes graphical user interface elements of a software application. Thereafter, labels within the received data are identified. Further, those labels having corresponding input fields are identified. These identified input fields are used to poll a test data repository for test data appropriate for such input fields. Using the test data obtained as part of the polling, a testing script for the software application is executed which injects the test data into the identified input fields. Related apparatus, systems, techniques and articles are also described.