Is this unit test valid? It succeeds, but I dunno if Task.Factory.StartNew really imitates an async task from a 3rd party library.

gistfile1.txt

        [Fact]
        public async Task can_return_failed_exceptional_from_async_task_try()
        {
            Func<Task<int>> mathFunc = () => Task.Factory.StartNew(() => Int32.Parse(""));

            Exceptional<int> exceptionalInt = await Tryable.Try(mathFunc);

            //Assert
            exceptionalInt.IsFailure.Should().BeTrue();
            exceptionalInt.ToString().ShouldBeEquivalentTo("Input string was not in a correct format.");
        }