it('should be abled to get custom style', function () {
var panel = new Panel();
panel.appendTo(container);
panel.setStyle('background-color', 'red');
expect(panel.getStyle('backgroundColor')).toBe('red');
});
it('should be abled to set custom style with dashed name', function () {
var panel = new Panel();
panel.appendTo(container);
panel.setStyle('background-color', 'red');
expect(panel.main.style.backgroundColor).toBe('red');
});