public void TestInvalidation()
{
var component = new TestComponent();
var task1 = component.Result.Task;
var result1 = "value1";
component.CompleteTest(result1);
Assert.IsTrue(task1.IsCompleted, "completed 1");
Assert.AreEqual(result1, task1.Result);
var task2 = component.Result.Task;
Assert.IsTrue(task2.IsCompleted, "completed 2");
Assert.AreEqual(result1, task2.Result);
component.Invalidate();
var task3 = component.Result.Task;
Assert.IsFalse(task3.IsCanceled, "task3.IsCanceled before .CompleteTest()");
Assert.IsFalse(task3.IsCompleted, "task3.IsCompleted before .CompleteTest()");
var result2 = "value1";
component.CompleteTest(result1);
Assert.IsFalse(task3.IsCanceled, "task3.IsCanceled after .CompleteTest()");
Assert.IsTrue(task3.IsCompleted, "task3.IsCompleted after .CompleteTest()");
Assert.AreEqual(result2, task3.Result);
}