Bloom.NavigationIsolator.Navigate C# (CSharp) Method

        public void Navigate(GeckoWebBrowser browser, string url)
        {
            if (browser.InvokeRequired)
                throw new Exception("Navigation should only be done on the main UI thread");
            Navigate(new IsolatedBrowser(browser), url);
        }

        public void Isolation_AfterLongDelay_GivesUpAndMovesOn()
        {
            var browser = new BrowserStub();
            string target = "http://any old web address";
            var isolator = new NavigationIsolator();
            isolator.Navigate(browser, target);
            Assert.That(browser.NavigateTarget, Is.EqualTo(target));

            var browser2 = new BrowserStub();
            string target2 = "http://some other web address";
            isolator.Navigate(browser2, target2);
            var browser3 = new BrowserStub();
            string target3 = "http://yet another web address";
            isolator.Navigate(browser3, 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(() => browser2.NavigateTarget, Is.EqualTo(target2), "Second navigation should have proceeded eventually");

            browser2.NormalTermination(); // the second request.
            Assert.That(() => browser3.NavigateTarget, Is.EqualTo(target3), "Third navigation should have proceeded when second finished");

            browser3.NormalTermination(); // hopefully from the third.
            Assert.That(browser3.EventHandlerCount, Is.EqualTo(0), "event handlers should be removed once last navigation completed");
        }