Tool for Verification Tests of a GUI (MacOSX)

I am developing a software for medical applications. The software has a Qt GUI and can be run as an application in MacOSX. The verification test protocol of the software is defined in an XML file, see attached. Write a command line tool for the MacOSX Terminal that - open the XML file - opens the software for medical applications - performs a test sequence for each <verification_testitem> in the XML file (here: test_no 0, then test_no 1), where the test sequence for test_no i is: - add a <test_report> entry to the verification_testitem in the XML file - load [login to view URL] from the current directory (not provided) - look for position of search image in the GUI - identify whether the search image matches the current screen of the GUI at any position - if there is a match, set <searchimage_found> to YES, else NO - if there is a match, store the coordinates of the first encountered search image position in the XML file as <searchimage_position> - else, exit with error message - generate a click on the position of the search image - load [login to view URL] from the current directory (not provided) - look for position of result image in the GUI - identify whether the result image matches the current screen of the GUI at any position - if there is a match, set <resultimage_found> to YES, elso NO - if there is a match, store the coordinates of the first encountered result image position in the XML file as <resultimage_position> - close the XML file Please demonstrate proper operation with a typical Mac application, e.g. Preview or Finder or Pages.