D27789: [autotests] Fix failing KeyboardLayoutTest::testNumLock()

zzag created this revision.
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REVISION SUMMARY
  Since Qt::KeypadModifier is set only for keypad keys and not the NumLock
  key, we need to press at least one keypad key to determine whether
  numlock is actually on. On the other hand, we know that when numlock is
  on, the corresponding LED is also on. So we could check the LED rather
  than press two keys.

TEST PLAN
  testKeyboardLayout passes.

REPOSITORY
  R108 KWin

BRANCH
  check-led-status-in-test-num-lock

REVISION DETAIL
  https://phabricator.kde.org/D27789

AFFECTED FILES
  autotests/integration/keyboard_layout_test.cpp

To: zzag, #kwin
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