public void ShouldRemoveAllFromFavouritesCollection()
        {
            // Arrange
            var cookies = new FakeCookie(true);

            httpContextAccessor.Setup(_ => _.HttpContext.Request.Cookies).Returns(cookies);
            httpContextAccessor.Setup(_ => _.HttpContext.Response.Cookies).Returns(cookies);

            // Act
            cookiesHelper.RemoveAllFromCookies <Group>("favourites");
            var result = JsonConvert.DeserializeObject <Dictionary <string, List <string> > >(cookies["favourites"]);

            // Assert
            result.ContainsKey(typeof(Group).ToString()).Should().Be(false);
        }