public async Task PoppingWithQueryString(string input)
{
Routing.RegisterRoute("details", typeof(ShellTestPage));
var shell = new TestShell(CreateShellItem());
await shell.GoToAsync("details");
await shell.GoToAsync("ModalTestPage");
await shell.GoToAsync(new ShellNavigationState($"{input}?{nameof(ShellTestPage.SomeQueryParameter)}=1234"));
shell.AssertCurrentStateEquals($"//{shell.CurrentItem.CurrentItem.CurrentItem.Route}/details");
var testPage = shell.CurrentPage as ShellTestPage;
Assert.AreEqual("1234", testPage.SomeQueryParameter);
}