Qt testsuite The Qt testsuite test the y2qt component by running all .ui files in the qt.test directory (qt.test/*.ui) through runqt. Every run results in a stdout and stderr output which is checked agains .out and .err respectively. The file lib/qt.exp defines a function which runs all tests contained in qt.test (i.e. makes a 'glob' on qt.test/*.ui) For every .ui file you put in tests, you must create the proper .out and .err file with the following command runqt file.ui > file.out 2> file.err