BloomTests.BrowserStub.NormalTermination C# (CSharp) Method

        public void NormalTermination()
        {
            IsBusy = false;
            RaiseNavigated(this, new EventArgs());
        }

        public void Isolation_AfterLongDelay_GivesUpAndMovesOn()
        {
            var    browser  = new BrowserStub();
            string target   = "any old web address";
            var    isolator = new NavigationIsolator();

            isolator.Navigate(browser, target);
            Assert.That(browser.NavigateTarget, Is.EqualTo(target));

            string target2 = "some other web address";

            isolator.Navigate(browser, target2);
            string target3 = "yet another web address";

            isolator.Navigate(browser, target3);
            Assert.That(browser.NavigateTarget, Is.EqualTo(target), "Second navigation should not have proceeded at once");
            var start = DateTime.Now;

            while (DateTime.Now - start < new TimeSpan(0, 0, 0, 2, 300))
            {
                Application.DoEvents();                 // allow timer to tick.
            }
            Assert.That(() => browser.NavigateTarget, Is.EqualTo(target2), "Second navigation should have proceeded eventually");

            browser.NormalTermination();             // possibly the long-delayed notification of the first nav, but more likely the second.
            Assert.That(() => browser.NavigateTarget, Is.EqualTo(target3), "Third navigation should have proceeded when second finished");

            browser.NormalTermination();             // hopefully from the third.
            Assert.That(browser.EventHandlerCount, Is.EqualTo(0), "event handlers should be removed once last navigation completed");
        }