public async Task RemoveFavorite_ReturnSuccess()
{
//arrange
_favoritesQueryMock.Setup(x => x.Delete(It.IsAny <Favorite>()))
.Returns(Task.Factory.StartNew(() => true));
//act
var task = await _uut.Remove("aml5071", 10);
//assert
Assert.IsType <NoContentResult>(task);
var result = task as NoContentResult;
Assert.True(result.StatusCode == 204);
}