Dfd Essay

A data flow diagram (DFD) is a model which shows visual representation. The representation is comprised of information through systems, data and actors. These focus on how data is changed and being used during the process. DFD’s describes the system in many different process execution or collaboration of different process together as single process or bunch of data made into pieces are used in one or more process. The drawback of DFD is that no decisions are exposed and the processes are not sequential. To the simplest, a data flow diagram shows the flow of data in and out the system as specified in the requirement. It also gives the details of storage of information. DFD’s do not show the time taken by a process to change its state by the

In the Visual Studio select the Coded UI project. Now select the coded UI map which helps to map the controls of the application to the project and helps to use later in the project. This mapped class is a combination of two files which are combined together through partial class. So any change in one of the file will be affected in another. While executing the class variable or control property is considered by combining the properties of both classes and will be used. Each control mapped has a property created so that it is distinguishable while using the same in the automation scripts. Control map will have stored this information. The data file is where we keep the numeric, string values which are essential while executing for the values to be entered in the text boxes for the ease of application execution that is testing the application using automation. The test script is the class or file which has the steps coded for automation testing. The test script interacts with the control map and the data file. The control map returns the control needed by the script to perform the application. The control may be different type of buttons, edit boxes, combo boxes, window, title bar, title and many more wpf controls along with this win controls. The test scripts access the data file to get the value of the variable. The value may be numerical or alphabetical. These values are sent to the controls to perform suitable operations which may help to perform different mouse operations or keyboard operations on the application similar to manual testing. The test scripts on running, executes operations on the controls provided by the control map. While executing if the steps are not coded in proper manner, it leads to a failure of the test cases which is a error from the developer side. This type of faults should be handled and should perform multiple run on