public async Task ListenersAreCalled()
{
await Run(async() => {
var listener1Counter = 0;
var listener2Counter = 0;
var taskCompletionSourceListener1 = new TaskCompletionSource <bool>();
var taskCompletionSourceListener21 = new TaskCompletionSource <bool>();
var taskCompletionSourceListener22 = new TaskCompletionSource <bool>();
var listener1 = TargetView.AttachListener("event1_name");
listener1.Handler += delegate {
listener1Counter++;
taskCompletionSourceListener1.SetResult(true);
};
var listener2 = TargetView.AttachListener("event2_name");
listener2.Handler += delegate {
listener2Counter++;
taskCompletionSourceListener21.SetResult(true);
};
listener2.Handler += delegate {
listener2Counter++;
taskCompletionSourceListener22.SetResult(true);
};
await Load($"<html><script>{listener1}{listener2}</script><body></body></html>");
Task.WaitAll(taskCompletionSourceListener1.Task, taskCompletionSourceListener21.Task, taskCompletionSourceListener22.Task);
Assert.AreEqual(1, listener1Counter);
Assert.AreEqual(2, listener2Counter);
});
}
public void ListenersAreCalled()
{
var listenerCalled = false;
var listener = TargetView.AttachListener("event_name", () => listenerCalled = true);
LoadAndWaitReady($"<html><script>{listener}</script><body></body></html>");
WaitFor(() => listenerCalled);
Assert.IsTrue(listenerCalled);
}
public void ListenersAreCalledInDispatcherThread()
{
bool?canAccessDispatcher = null;
var listener = TargetView.AttachListener("event_name", () => canAccessDispatcher = TargetView.Dispatcher.CheckAccess(), executeInUI: true);
LoadAndWaitReady($"<html><script>{listener}</script><body></body></html>");
WaitFor(() => canAccessDispatcher != null);
Assert.IsTrue(canAccessDispatcher);
}
public async Task ListenersAreCalledInDispatcherThread()
{
await Run(async() => {
var taskCompletionSource = new TaskCompletionSource <bool>();
var listener = TargetView.AttachListener("event_name");
listener.UIHandler += delegate {
taskCompletionSource.SetResult(Dispatcher.UIThread.CheckAccess());
};
await Load($"<html><script>{listener}</script><body></body></html>");
var canAccessDispatcher = await taskCompletionSource.Task;
Assert.IsTrue(canAccessDispatcher, "Listeners are not being called in dispatcher thread!");
});
}
public void UnhandledExceptionEventIsCalledOnListenerError()
{
const string ExceptionMessage = "hey";
Exception exception = null;
WithUnhandledExceptionHandling(() => {
var listener = TargetView.AttachListener("event_name", () => throw new Exception(ExceptionMessage), executeInUI: false);
LoadAndWaitReady($"<html><script>{listener}</script><body></body></html>");
WaitFor(() => exception != null);
Assert.IsTrue(exception.Message.Contains(ExceptionMessage));
},
e => {
exception = e;
return(true);
});
}
public void ListenersAreCalled()
{
var listener1Counter = 0;
var listener2Counter = 0;
var listener1 = TargetView.AttachListener("event1_name");
listener1.Handler += delegate { listener1Counter++; };
var listener2 = TargetView.AttachListener("event2_name");
listener2.Handler += delegate { listener2Counter++; };
listener2.Handler += delegate { listener2Counter++; };
LoadAndWaitReady($"<html><script>{listener1}{listener2}</script><body></body></html>");
WaitFor(() => listener1Counter > 0 && listener2Counter > 0);
Assert.AreEqual(1, listener1Counter);
Assert.AreEqual(2, listener2Counter);
}
public async Task UnhandledExceptionEventIsCalledOnListenerError()
{
await Run(() => {
var taskCompletionSource = new TaskCompletionSource <Exception>();
const string ExceptionMessage = "hey";
WithUnhandledExceptionHandling(async() => {
var listener = TargetView.AttachListener("event_name");
listener.Handler += delegate {
throw new Exception(ExceptionMessage);
};
await Load($"<html><script>{listener}</script><body></body></html>");
var exception = await taskCompletionSource.Task;
StringAssert.Contains(ExceptionMessage, exception.Message);
},
e => {
taskCompletionSource.SetResult(e);
return(true);
});
});
}