Aspect ratio for 16:10 screen with square pixels
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This test is done for a 16:10 screen with square pixels resolution. Xwindow or Linux must return the right metrics.

You have to use the testing suite for these tests. see `media testing suite`_

.. _media testing suite: Testing/MediaTestingSuite

make a copy of the default config file, and use it for this test : /media/TESTS/test-suite/config_file/default.conf
 
**screen_ratio config test**

'screen_ratio' in config file is set to 'auto'. If this mode doesn't work, check if xdpyinfo gives the got metrics.
If yes, fill a bug :). If not, put the appropriate ratio in the config file.

make the following tests with :

1. in window
2. in fullscreen

tests :

1. Action : Launch Elisa with your copy of default.conf.
2. Result : If the window has the same aspect ratio of the screen
3. Result : check if Elisa use the complete window (no black border)
4. Action : go in pictures -> folders -> square pixels tests, and open '16-10 circle.png'
5. Result : heck if the circle has a good aspect

**aspect_ratio_switcher tests**

TODO


