it('should support disallowToggle flag if true', function() {
        var elm = compileDirective('options-disallowToggle-true');
        var $heading = sandboxEl.find('a[bs-collapse-toggle]:eq(0)');
        var $target = sandboxEl.find('[bs-collapse-target]:eq(0)');
        expect($target.hasClass('in')).toBeTruthy();