public async Task NoSubscriptionWithoutConnectTest()
{
var jsevent = new JsEvent(new Mock <IJSRuntime>().Object);
Assert.Throws <InvalidOperationException>(() => jsevent.Paste += x => Console.WriteLine(x));
Assert.Throws <InvalidOperationException>(() => jsevent.CaretPositionChanged += x => Console.WriteLine(x));
Assert.Throws <InvalidOperationException>(() => jsevent.Select += (x, y) => Console.WriteLine());
Assert.Throws <InvalidOperationException>(() => jsevent.Subscribe("copy"));
// unsubscribing before connection is ignored
await jsevent.Unsubscribe("copy");
await jsevent.Disconnect();
await jsevent.UnsubscribeAll();
jsevent.Dispose();
}
