D18452: [autotests] Sub-surface resize test

romangg created this revision.
romangg added a reviewer: KWin.
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REVISION SUMMARY
  Adds an autotest to show that KWin fails an assertion when a client tries to
  resize a sub-surface.
  
  Since it is the first autotest dealing with sub-surfaces explicitly additional
  autotest helpers are introduced to allow that.
  
  We also add a new signal in Compositor to spy on to know when the buffer swap
  has been completed.

TEST PLAN
  Test fails as expected.

REPOSITORY
  R108 KWin

BRANCH
  bufferSizeTest

REVISION DETAIL
  https://phabricator.kde.org/D18452

AFFECTED FILES
  autotests/integration/CMakeLists.txt
  autotests/integration/buffer_size_change_test.cpp
  autotests/integration/kwin_wayland_test.h
  autotests/integration/test_helpers.cpp
  composite.cpp
  composite.h

To: romangg, #kwin
Cc: kwin, jraleigh, GB_2, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, ngraham, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart