public async Task AddAsync_AddsItemToDatabase()
{
var numberOfItemsInDatabase = await _context.Topics.AsQueryable().CountAsync();
await _service.CreateEntityAsync(new TopicDto { Id = "testTopic1", Name = "Test Topic", MaxAttemptCount = 2,
QuestionsPerAttempt = 17, TimeToPass = 25, TopicNumber = 5, SubjectId = "subject2" });
_context.Topics.AsQueryable().CountAsync().Result.Should().Be(numberOfItemsInDatabase + 1);
_validator.VerifyAll();
}
