public async Task DeleteTopicByIdAsync_DeleteWithId1_DeletesItem()
{
var numberOfItemsInDatabase = await _context.Topics.CountAsync();
await _service.DeleteTopicByIdAsync(1);
_context.Topics.CountAsync().Result.Should().Be(numberOfItemsInDatabase - 1);
_context.Topics.FindAsync(1).Result.Should().BeNull();
}
public async Task <IActionResult> DeleteConfirmed(int id)
{
await _topicService.DeleteTopicByIdAsync(id);
return(RedirectToAction(nameof(Index)));
}