public void OnPreRender_ForHigherBorderWidth_PreRender()
        {
            // Arrange
            _toolButton    = new ToolButton();
            _privateObject = new PrivateObject(_toolButton);
            SetUp("high");

            // Act
            _privateObject.Invoke("OnPreRender", new EventArgs());

            // Assert
            _toolButton.ShouldSatisfyAllConditions(
                () => _toolButton.BorderColorRollOver.ShouldBe(Color.Aqua),
                () => _toolButton.BackImageRollOver.ShouldBe("roll"));
        }