Multiple return values of type task

[xp-development]

It is not possible to return different return values of type task. I receive always the same task. If the method returns "string" instead of "Task<string>", it works well!

The following test is a infinite loop:

public interface ITest
{
  Task<string> Write();
}

public class Test
{
  private readonly ITest test;

  public Test(ITest test)
  {
    this.test = test;
  }

  public void Write()
  {
    var result = test.Write().Result;
    while (result != "")
    {
      Console.WriteLine(result);
      result = test.Write().Result;
    }
  }
}

[TestMethod]
public void TaskTest()
{
  var queue = new Queue<string>();
  queue.Enqueue("qq");
  queue.Enqueue("");

  var mock = new Mock<ITest>();
  mock.Setup(item => item.Write()).Returns(Task.Run(() => queue.Dequeue()));

  var test = new Test(mock.Object);

  test.Write();
}

[mikeburdick]

Your setup needs deferred execution I think:

mock.Setup(item => item.Write()).Returns(() => { return Task.Run(() => queue.Dequeue(); }));

[xp-development]

Great! It works!