RED: test_that_exiting_the_grid_to_the_left_causes_invalidation
GREEN: test_that_exiting_the_grid_to_the_left_causes_invalidation
RED: test_that_exiting_the_grid_through_the_top_causes_invalidation
GREEN: test_that_exiting_the_grid_through_the_top_causes_invalidation
RED: test_that_exiting_the_grid_through_the_bottom_causes_invalidation
GREEN: test_that_exiting_the_grid_through_the_bottom_causes_invalidation