public void ExceptionTest()
{
var queue = new TaskSingleton();
AssertThrow <ArgumentNullException>(
() => queue.Execute(null),
() => queue.Execute((Func <Task <string> >)null));
}
public void MainTest()
{
AsyncPump.Run(
async() =>
{
var singleton = new TaskSingleton();
var task1 = singleton.Execute(() => Task.Delay(250));
await AssertThrowAsync <InvalidOperationException>(() => singleton.Execute(() => Task.Delay(250)));
await task1;
var value = this.Random.Next();
Assert.AreEqual(value, await singleton.Execute(() => Task.FromResult(value)));
});
}