1. A method for graphical user interface application testing, comprising: generating in computer readable memory a programming class for a graphical user interface (GUI) object in a graphical user interface application (GAP); providing a value manipulation method in the programming class for the GUI object; reading in the memory a test script statement from a test script that references the GUI object with a programming object defined in the test script, the programming object comprising a programming object value; establishing in the memory a reflective connector between the test script statement and the GUI object in the GAP to provide access to the GUI object, by linking the test script statements and the GUI object through an accessibility layer; and in connection with executing the test script statement, calling the value manipulation method through the connector to manipulate the programming object value.