add testGameControls, testPairsCount
add testGameGrid
add testVariableLayout
add testCardViewWithBorderAndPadding
add testRevealCards & testRevealAllButton
add testAssignRandomCards
add testAssignRandomPairs, testShuffleCards,
testShuffleWhenLayoutChanged
add testMatchSelectedPairs, testResetScoreAfterShuffle, testWinGame