Write a 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 (10.10, screen resolution 1440x900 px). 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.