it('should render a div with .boldrui-container, modifiers and custom classNames', () => {
    const container = shallow(<Container isFluid className="custom loader" />);
    expect(container.hasClass('boldrui-container')).toBe(true);
    expect(container.hasClass('is-fluid')).toBe(true);
    expect(container.hasClass('custom')).toBe(true);