public async Task WhenUserLikeTwoTimesSamePetTheTotalLikesShoudBeCorrectAndDelete()
{
var list = new List <Like>();
var mockRepo = new Mock <IRepository <Like> >();
mockRepo.Setup(x => x.All()).Returns(list.AsQueryable());
mockRepo.Setup(x => x.AddAsync(It.IsAny <Like>())).Callback(
(Like like) => list.Add(like));
var service = new LikesService(mockRepo.Object);
await service.SetLikeAsync(2, "Pesho", 1);
await service.SetLikeAsync(2, "Pesho", 1);
await service.SetLikeAsync(2, "Gosho", 1);
await service.DeleteLikeAsync(2, "Gosho", 1);
mockRepo.Verify(x => x.AddAsync(It.IsAny <Like>()), Times.Exactly(2));
Assert.Equal(2, list.Count);
Assert.Equal(2, service.GetTotalLikes(2));
Assert.False(service.IsUserLikedIt("Pesho", 2));
}