public async Task IsPostLikedByUserAsync_WithInvalidUserId_ShouldReturnFalse()
{
// Arrange
var context = InMemoryDbContext.Initiliaze();
var likesRepository = new EfRepository <Like>(context);
var usersRepository = new EfRepository <ApplicationUser>(context);
var postsRepository = new EfRepository <Post>(context);
var service = new LikesService(likesRepository, usersRepository, postsRepository);
await this.SeedUserAndPost(context);
await this.SeedLikes(context);
// Act
bool isLiked = await service.IsPostLikedByUserAsync("InvalidUserId", 52); // UserId is non-existent
// Assert
Assert.False(isLiked);
}