public void TwoUpdatesToDifferentFiles()
    {
        var scheduler = new TestScheduler();
        var sut       = new FileUpdateController <string>(scheduler);
        var task1     = sut.QueueFileUpdate("test1", "1");
        var task2     = sut.QueueFileUpdate("test2", "2");

        Assert.AreNotEqual(TaskStatus.RanToCompletion, task1.Status);
        scheduler.AdvanceBy(TimeSpan.FromSeconds(5).Ticks + 1);
        Assert.AreEqual(TaskStatus.RanToCompletion, task1.Status);
        Assert.AreEqual(TaskStatus.RanToCompletion, task2.Status);
        Assert.AreEqual("test1", task1.Result);
        Assert.AreEqual("test2", task2.Result);
    }
    public void UpdatingDataOnPendingFileWorks()
    {
        var scheduler = new TestScheduler();
        var sut       = new FileUpdateController <string>(scheduler);
        var task1     = sut.QueueFileUpdate("test", "1");
        var task2     = sut.QueueFileUpdate("test", "2");
        var task3     = sut.QueueFileUpdate("test", "3");

        Assert.AreSame(task2, task3);
        scheduler.AdvanceBy(TimeSpan.FromSeconds(5).Ticks + 1);
        Assert.AreEqual(TaskStatus.RanToCompletion, task1.Status);
        Assert.AreNotEqual(TaskStatus.RanToCompletion, task2.Status);
        scheduler.AdvanceBy(TimeSpan.FromSeconds(5).Ticks + 1);
        Assert.AreEqual(TaskStatus.RanToCompletion, task2.Status);
    }
    public void SingleUpdate()
    {
        var scheduler = new TestScheduler();
        var sut       = new FileUpdateController <string>(scheduler);
        var task      = sut.QueueFileUpdate("test", "1");

        Assert.AreNotEqual(TaskStatus.RanToCompletion, task.Status);
        scheduler.Start();
        Assert.AreEqual(TaskStatus.RanToCompletion, task.Status);
        Assert.AreEqual("test", task.Result);
    }