![]() Those could be glued together like so (this is theory - I didnt try the full flow): Xnee: looks promising :, - needs to be installed from source ![]() Xvfb - virtual framebuffer X server - lets one run an X application headless and get at the screen content Some tools also use ATSPI, which I didnt get to work on ubuntu ( ).Īfter some googling and dead ends, the most promising route seems to be a combination of Nowadays tools mostly work directly with the X server through the XTEST and record extensions, and the application connects directly to the X server as usual the XTEST and record extensions allow recording and inserting of X events. Since it is a proxy it doesnt see window manager events as well. It is a proxy sitting between X server and application if it cant relay events the application fails. Unfortunately the components are very old and unsuitable - xscope is too limited and cant deal with OpenGL ? windows properly. ![]() The android tool is nice as it allows to record a session, start the program, record interactions, compare the screenshot, and exit. There isnt a whole lot of free and good tools for that purpose. The intent is to come up to automatically test a GUI in 'headless mode', and compare the screen result against a pre-recorded screenshot. The contents of logfile are listed bellow:Ġ00: : Success, version is 11:0 vendor='The X.This page is intended to collect information about automated GUI testing for EMC2. To overcome this after we start the fake server as: '-display' option to allow the user choose a display. The messages captured by logfile are inspected using:īack then to our simple program we have to notice that X clients usually make use of an The command that redirects 'fake' display 9 to display 0 is:Īnd then we run the X client program, for instance xtrace (or xeyes) as:Ī number of messages exchanged between the X server and the client appear immediately in theįirst xterm window (the one that runned xtrace -D:9 -d:0). ![]() Therefore number 9 is used as a fake display, since rarely a system needs more than one or twoĭisplays. Recall that a second X Server would make use of display 1, and we would be transferred to display 1 by using Ctrl+Alt+F8 (instead Ctrl+Alt+F7 for display 0) and so on. We use display 0, which is in the previous command the display that connections from Using a 'fakedisplay', for instance display 9. To run a X client program under xtrace I downloaded the xtrace packet in UbuntuĪnd I started the xtrace utility from the command line Xtrace fakes an X server and forwards all connections to a real X server, displaying the communication between the clients and the server in an (well, theoretically) human readable form. Next I will run the program using the xtrace utility to have a look behind the scene.įor xtrace we read from the xtrace Debian page: The program's window is the active one in the following image: Package either by using the 'Ubuntu Softtare Center' from the desktop or by using the followingĪnd I take the little white window with the black square, that lives until a key is pressed. In my Ubuntu sytem gcc complained that Xlib.h was missing and I had to download the xorg-dev XSelectInput(d, w, ExposureMask | KeyPressMask) * select kind of events we are interested in */ Prosses Window Close Event through event handler so XNextEvent does Not failĪtom delWindow = XInternAtom( d, "WM_DELETE_WINDOW", 0 ) #include // prevents error for exit on line 18 when compiling with gcc To Compile: gcc -O2 -Wall -o test test.c -L /usr/X11R6/lib -lX11 -lm Simple Xlib application drawing a box in a window. To illustrate the communication between the X client and the X server: (actually the second version of this program we mentioned in section 1.1) We will use the first example of section 1.1 Hands-on Experiment: find the messages exchanged between the X client-server Hands-on Projects for the Linux Graphics Subsystem
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