def METHOD_NAME(manager):
    manager.test_window("one")
    assert_dimensions(manager, 0, 0, 798, 598)
    manager.test_window("two")
    assert_dimensions(manager, 400, 0, 398, 598)
    manager.test_window("three")
    assert_dimensions(manager, 400, 300, 398, 298)
    manager.c.layout.increase_ratio()
    assert_dimensions(manager, 480, 360, 318, 238)
    manager.c.layout.increase_ratio()
    assert_dimensions(manager, 560, 420, 238, 178)
    for _ in range(4):
        manager.c.layout.decrease_ratio()
    assert_dimensions(manager, 240, 180, 558, 418)
    manager.c.layout.reset()
    assert_dimensions(manager, 400, 300, 398, 298)